Gamma-ray Burst 100814A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:50:24 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      44
TRIGGER_NUM:     303450610
GRB_RA:           25.100d {+01h 40m 24s} (J2000),
                  25.236d {+01h 40m 57s} (current),
                  24.462d {+01h 37m 51s} (1950)
GRB_DEC:          -1.200d {-01d 11' 59"} (J2000),
                  -1.147d {-01d 08' 46"} (current),
                  -1.453d {-01d 27' 09"} (1950)
GRB_ERROR:       12.00 [deg radius, statistical plus systematic]
GRB_INTEN:       293 [cnts/sec]
DATA_SIGNIF:     13.20 [sigma]
INTEG_TIME:      1.024 [sec]
GRB_DATE:        15422 TJD;   226 DOY;   10/08/14
GRB_TIME:        13808.81 SOD {03:50:08.81} UT
GRB_PHI:         236.00 [deg]
GRB_THETA:        70.00 [deg]
DATA_TIME_SCALE: 1.0240 [sec]
HARD_RATIO:      0.21
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      97%  GRB
2nd_MOST_LIKELY:   1%  Generic Transient
DETECTORS:       0,0,0, 0,0,0, 0,1,1, 0,0,0, 0,0,
SUN_POSTN:       143.65d {+09h 34m 37s}  +14.41d {+14d 24' 34"}
SUN_DIST:        117.76 [deg]   Sun_angle= 7.9 [hr] (West of Sun)
MOON_POSTN:      194.37d {+12h 57m 29s}  -11.71d {-11d 42' 24"}
MOON_DIST:       163.22 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      149.34,-61.54 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       22.81,-10.83 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 49.68,21.45 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:50:33 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      58
TRIGGER_NUM:     303450610
GRB_RA:           19.083d {+01h 16m 20s} (J2000),
                  19.216d {+01h 16m 52s} (current),
                  18.459d {+01h 13m 50s} (1950)
GRB_DEC:         -10.417d {-10d 24' 59"} (J2000),
                 -10.361d {-10d 21' 38"} (current),
                 -10.680d {-10d 40' 48"} (1950)
GRB_ERROR:       7.52 [deg radius, statistical plus systematic]
GRB_INTEN:       293 [cnts/sec]
DATA_SIGNIF:     24.70 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        15422 TJD;   226 DOY;   10/08/14
GRB_TIME:        13808.81 SOD {03:50:08.81} UT
GRB_PHI:         231.00 [deg]
GRB_THETA:        80.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.35
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       0,0,0, 0,0,0, 0,1,1, 0,0,0, 0,0,
SUN_POSTN:       143.65d {+09h 34m 37s}  +14.41d {+14d 24' 34"}
SUN_DIST:        125.70 [deg]   Sun_angle= 8.3 [hr] (West of Sun)
MOON_POSTN:      194.37d {+12h 57m 30s}  -11.71d {-11d 42' 26"}
MOON_DIST:       157.41 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      143.45,-72.29 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       13.50,-17.09 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 49.68,21.45 [deg].

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:50:47 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      69
TRIGGER_NUM:     303450610
GRB_RA:           20.170d {+01h 20m 41s} (J2000),
                  20.300d {+01h 21m 12s} (current),
                  19.560d {+01h 18m 14s} (1950)
GRB_DEC:         -17.490d {-17d 29' 23"} (J2000),
                 -17.434d {-17d 26' 03"} (current),
                 -17.752d {-17d 45' 05"} (1950)
GRB_ERROR:       3.67 [deg radius, statistical only]
DATA_SIGNIF:     30.20 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        15422 TJD;   226 DOY;   10/08/14
GRB_TIME:        13808.81 SOD {03:50:08.81} UT
GRB_PHI:         233.00 [deg]
GRB_THETA:        87.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   413 (Gnd S/W Version number)
SUN_POSTN:       143.65d {+09h 34m 37s}  +14.41d {+14d 24' 33"}
SUN_DIST:        125.64 [deg]   Sun_angle= 8.2 [hr] (West of Sun)
MOON_POSTN:      194.38d {+12h 57m 30s}  -11.71d {-11d 42' 29"}
MOON_DIST:       150.28 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      159.45,-78.23 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       11.50,-23.99 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Sat 14 Aug 10 03:51:05 UT
NOTICE_TYPE:    INTEGRAL SPI ACS Trigger
TRIGGER_NUM:    6056,   Sub_Num: 0
GRB_INTEN:      9.14 [sigma]
GRB_TIME:       13807.34 SOD {03:50:07.34} UT
GRB_DATE:       15422 TJD;   226 DOY;   10/08/14
COMMENTS:       INTEGRAL SPI_ACS GRB Trigger.
COMMENTS:
COMMENTS:       NOTE: This SPIACS event is temporally(1.0<100sec) coincident
+with the FERMI_GBM event (trignum=303450610).
COMMENTS:
COMMENTS:       The SPIACS lightcurve can be found at:
COMMENTS:
+ftp://isdcarc.unige.ch/arc/FTP/ibas/spiacs/2010-08/2010-08-14T03-50-07.2289-02872-00007-0.lc

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:55:00 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     431605,   Seg_Num: 0
GRB_RA:           22.481d {+01h 29m 55s} (J2000),
                  22.609d {+01h 30m 26s} (current),
                  21.874d {+01h 27m 30s} (1950)
GRB_DEC:         -17.986d {-17d 59' 07"} (J2000),
                 -17.931d {-17d 55' 51"} (current),
                 -18.243d {-18d 14' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       7666 [cnts]    Image_Peak=834 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       30306 [cnts]
BKG_TIME:        13793.92 SOD {03:49:53.92} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15422 TJD;   226 DOY;   10/08/14
GRB_TIME:        13811.26 SOD {03:50:11.26} UT
GRB_PHI:         -12.42 [deg]
GRB_THETA:        26.28 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     57.28 [sigma]
IMAGE_SIGNIF:    19.15 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +6  +0  +0 +55  +0 
SUN_POSTN:       143.66d {+09h 34m 38s}  +14.41d {+14d 24' 30"}
SUN_DIST:        123.50 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.42d {+12h 57m 40s}  -11.72d {-11d 43' 27"}
MOON_DIST:       149.26 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      169.07,-77.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       13.49,-25.34 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 14.76,-13.11 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:55:36 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     431605,   Seg_Num: 0
GRB_RA:           22.4699d {+01h 29m 52.77s} (J2000),
                  22.5986d {+01h 30m 23.65s} (current),
                  21.8638d {+01h 27m 27.30s} (1950)
GRB_DEC:         -17.9954d {-17d 59' 43.4"} (J2000),
                 -17.9408d {-17d 56' 26.9"} (current),
                 -18.2532d {-18d 15' 11.6"} (1950)
GRB_ERROR:       4.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       6.18e-09 [erg/cm2/sec]
GRB_SIGNIF:      12.24 [sigma]
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13898.61 SOD {03:51:38.61} UT,   87.4 [sec] since BAT Trigger Time
TAM[0-3]:        327.67 237.23 261.56 243.28
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       143.66d {+09h 34m 38s}  +14.41d {+14d 24' 30"}
SUN_DIST:        123.51 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.42d {+12h 57m 41s}  -11.73d {-11d 43' 35"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      169.06,-77.28 [deg] galactic lon,lat of the burst
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.85 arcmin from the BAT position.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:55:46 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     431605,   Seg_Num: 0
GRB_RA:           22.4699d {+01h 29m 52.7s} (J2000),
                  22.5986d {+01h 30m 23.6s} (current),
                  21.8638d {+01h 27m 27.3s} (1950)
GRB_DEC:         -17.9954d {-17d 59' 43.4"} (J2000),
                 -17.9408d {-17d 56' 26.9"} (current),
                 -18.2532d {-18d 15' 11.6"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       150 [cnts]
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13898.61 SOD {03:51:38.61} UT,   87.4 [sec] since BAT Trigger Time
CENTROID_X:      288.97,  raw= 289  [pixels]
CENTROID_Y:      296.20,  raw= 296  [pixels]
ROLL:            84.37 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -4.23
GRB_POS_XRT_Z:   -31.41
IMAGE_URL:       sw00431605000msxps_rw.img
SUN_POSTN:       143.66d {+09h 34m 38s}  +14.41d {+14d 24' 30"}
SUN_DIST:        123.51 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.42d {+12h 57m 42s}  -11.73d {-11d 43' 37"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      169.06,-77.28 [deg] galactic lon,lat of the burst
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:56:22 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     431605,   Seg_Num: 0
GRB_RA:           22.481d {+01h 29m 55s} (J2000),
                  22.609d {+01h 30m 26s} (current),
                  21.874d {+01h 27m 30s} (1950)
GRB_DEC:         -17.986d {-17d 59' 07"} (J2000),
                 -17.931d {-17d 55' 51"} (current),
                 -18.243d {-18d 14' 35"} (1950)
GRB_DATE:        15422 TJD;   226 DOY;   10/08/14
GRB_TIME:        13811.26 SOD {03:50:11.26} UT
TRIGGER_INDEX:   146
GRB_PHI:         -12.42 [deg]
GRB_THETA:        26.28 [deg]
DELTA_TIME:      25.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     57.28 [sigma]
IMAGE_SIGNIF:    19.15 [sigma]
LC_URL:          sw00431605000msb.lc
SUN_POSTN:       143.66d {+09h 34m 38s}  +14.41d {+14d 24' 29"}
SUN_DIST:        123.50 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.43d {+12h 57m 43s}  -11.73d {-11d 43' 46"}
MOON_DIST:       149.26 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      169.07,-77.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       13.49,-25.34 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 14.76,-13.11 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 03:55:53 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     431605,   Seg_Num: 0
GRB_RA:           22.4699d {+01h 29m 52.7s} (J2000),
                  22.5986d {+01h 30m 23.6s} (current),
                  21.8638d {+01h 27m 27.3s} (1950)
GRB_DEC:         -17.9954d {-17d 59' 43.4"} (J2000),
                 -17.9408d {-17d 56' 26.9"} (current),
                 -18.2532d {-18d 15' 11.6"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       150 [cnts]
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13898.61 SOD {03:51:38.61} UT,   87.4 [sec] since BAT Trigger Time
CENTROID_X:      288.97,  raw= 289  [pixels]
CENTROID_Y:      296.20,  raw= 296  [pixels]
ROLL:            84.37 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -4.23
GRB_POS_XRT_Z:   -31.41
IMAGE_URL:       sw00431605000msxps_rw.img
SUN_POSTN:       143.66d {+09h 34m 38s}  +14.41d {+14d 24' 29"}
SUN_DIST:        123.51 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.42d {+12h 57m 42s}  -11.73d {-11d 43' 39"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      22 [%]
GAL_COORDS:      169.06,-77.28 [deg] galactic lon,lat of the burst
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:00:17 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.459d {+01h 29m 50s} (J2000)
POINT_DEC:       -17.994d {-17d 59' 38"} (J2000)
POINT_ROLL:      84.368d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13964.35 SOD {03:52:44.35} UT,   153.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.578
N_STARS:         111
X_OFFSET:        0 [pixels]
Y_OFFSET:        0 [pixels]
X_MAX:           2047 [pixels]
Y_MAX:           2047 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00431605000msufc0153.fits
SUN_POSTN:       143.66d {+09h 34m 39s}  +14.41d {+14d 24' 26"}
SUN_DIST:        123.52 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.47d {+12h 57m 52s}  -11.74d {-11d 44' 39"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.02,-77.28 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.47,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:00:17 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.459d {+01h 29m 50s} (J2000)
POINT_DEC:       -17.994d {-17d 59' 38"} (J2000)
POINT_ROLL:      84.368d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13964.35 SOD {03:52:44.35} UT,   153.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.578
N_STARS:         111
X_OFFSET:        0 [pixels]
Y_OFFSET:        0 [pixels]
X_MAX:           2047 [pixels]
Y_MAX:           2047 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00431605000msufc0153.fits
SUN_POSTN:       143.66d {+09h 34m 39s}  +14.41d {+14d 24' 26"}
SUN_DIST:        123.52 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.47d {+12h 57m 52s}  -11.74d {-11d 44' 39"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.02,-77.28 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.47,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:00:43 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.459d {+01h 29m 50s} (J2000)
POINT_DEC:       -17.994d {-17d 59' 38"} (J2000)
POINT_ROLL:      84.368d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13964.35 SOD {03:52:44.35} UT,   153.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.578
N_STARS:         111
X_OFFSET:        0 [pixels]
Y_OFFSET:        0 [pixels]
X_MAX:           2047 [pixels]
Y_MAX:           2047 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00431605000msufc0153.fits
SUN_POSTN:       143.66d {+09h 34m 39s}  +14.41d {+14d 24' 26"}
SUN_DIST:        123.52 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.47d {+12h 57m 53s}  -11.75d {-11d 44' 45"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.02,-77.28 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.47,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:01:41 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.459d {+01h 29m 50s} (J2000)
POINT_DEC:       -17.994d {-17d 59' 38"} (J2000)
ROLL:            84.368d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13964.35 SOD {03:52:44.35} UT,   153.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     303450770
X_OFFSET:        866 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1026
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00431605000msuni0160.fits
SUN_POSTN:       143.66d {+09h 34m 39s}  +14.41d {+14d 24' 25"}
SUN_DIST:        123.52 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.48d {+12h 57m 55s}  -11.75d {-11d 44' 59"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.02,-77.28 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.47,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:02:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.459d {+01h 29m 50s} (J2000)
POINT_DEC:       -17.994d {-17d 59' 38"} (J2000)
ROLL:            84.368d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  13964.35 SOD {03:52:44.35} UT,   153.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     303450770
X_OFFSET:        866 [pixels]
Y_OFFSET:        855 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1026
Y_GRB_POS:       1015
BINNING_INDEX:   1
IM_URL:          sw00431605000msuni0160.fits
SUN_POSTN:       143.66d {+09h 34m 39s}  +14.41d {+14d 24' 25"}
SUN_DIST:        123.52 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.48d {+12h 57m 56s}  -11.75d {-11d 45' 05"}
MOON_DIST:       149.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.02,-77.28 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.47,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #11086
B. E. Schaefer (Louisiana State), E.S. Rykoff (UCSB), W. Rujopakarn (Steward), S. B. Pandey (U Mich), W. Zheng (U Mich), report on behalf of the ROTSE collaboration:
ROTSE-IIIc, located at the H.E.S.S. site at Mt. Gamsberg, Namibia, responded to GRB 100814A (Swift trigger 431605). The first image was at 03:55:01.1 UT, 289.8 s after the burst (4.1 s after the GCN notice time). The unfiltered images are calibrated relative to USNO A2.0. We detect a new object, not visible in the DSS (second epoch), nor in our first set of observations with coordinates:
01:29:53.67 -17:59:41.58 (J2000), with positional uncertainty of 1" or better
```
start UT    	mag     mlim(of image)
----------------------------------
03:55:11.3     17.4     8.0 
```
A jpeg image is available at http://www.rotse.net/images/gsq431605_3c011-020_key.jpg Note that the object marked 29 is the candidate in question.
Continuing observations are in progress.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:17:52 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     431605,   Seg_Num: 0
GRB_RA:           22.4724d {+01h 29m 53.37s} (J2000),
                  22.6011d {+01h 30m 24.25s} (current),
                  21.8663d {+01h 27m 27.90s} (1950)
GRB_DEC:         -17.9963d {-17d 59' 46.6"} (J2000),
                 -17.9417d {-17d 56' 30.1"} (current),
                 -18.2541d {-18d 15' 14.8"} (1950)
GRB_ERROR:       3.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  14258.00 SOD {03:57:38.00} UT,   446.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       143.67d {+09h 34m 41s}  +14.40d {+14d 24' 13"}
SUN_DIST:        123.52 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      194.63d {+12h 58m 32s}  -11.81d {-11d 48' 41"}
MOON_DIST:       149.22 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.07,-77.28 [deg] galactic lon,lat of the burst
ECL_COORDS:       13.48,-25.35 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN Circular #11087
A. P. Beardmore (U Leicester), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), J. M. Gelbord (PSU), N. P. M. Kuin (UCL-MSSL), O. M. Littlejohns (U Leicester), C. B. Markwardt (NASA/GSFC), K. L. Page (U Leicester), D. M. Palmer (LANL), C. J. Saxton (UCL-MSSL), R. L. C. Starling (U Leicester), E. Troja (NASA/GSFC/ORAU) and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 03:50:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 100814A (trigger=431605). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 22.481, -17.986 which is
```
   RA(J2000) = 01h 29m 55s
   Dec(J2000) = -17d 59' 07"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed three separate peaks over a total interval of at least 150 sec. The peak count rate was ~6000 counts/sec (15-350 keV), at ~6 sec after the trigger.
The XRT began observing the field at 03:51:38.6 UT, 87.4 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source located at RA, Dec 22.47220, -17.99643 which is equivalent to:
```
   RA(J2000)  = 01h 29m 53.33s
   Dec(J2000) = -17d 59' 47.1"
```
with an uncertainty of 3.8 arcseconds (radius, 90% containment). This location is 48 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 1.75e+20 cm^-2 (Kalberla et al. 2005).
The initial flux in the 2.5 s image was 6.18e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 250 seconds with the U filter starting 153 seconds after the BAT trigger. A bright optical afterglow candidate was found at RA=22.4749, dec=-17.9932 which is
```
  RA = 01h 29m 53.98s
  Dec=-17d 59m 35.5s
```
(J2000). The estimated magnitude is U=16.8 .
Burst Advocate for this burst is C. J. Saxton (cjs2 AT mssl.ucl.ac.uk). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN Circular #11088
C. Gronwall (PSU) and C. J. Saxton (MSSL) report on behalf of the Swift/UVOT team:
In response to GRB 100814A (Swift/BAT trigger 431605) at 03:50:11 UT, UVOT took a finding chart exposure of 250 seconds with the U filter starting 153 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at RA(J2000) = 01:29:53.54 = 22.47309 DEC(J2000) = -17:59:43.5 = -17.99541 with a 90%-confidence error radius of about 0.75 arc sec. This position is 4.7 arc sec. from the center of the XRT error circle. This position supersedes the position given in (Beardmore et al., GCN Circ. 11087) and is consistent with the optical afterglow position from ROTSE (Schaefer et al., GCN Circ. 11086). The estimated magnitude is 16.76 with a 1-sigma error of about 0.14. No correction has been made for the expected extinction corresponding to E(B-V) of 0.02.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:57:16 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.468d {+01h 29m 52s} (J2000)
POINT_DEC:       -17.989d {-17d 59' 19"} (J2000)
POINT_ROLL:      84.376d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  17668.97 SOD {04:54:28.97} UT,   3857.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.045
N_STARS:         11
X_OFFSET:        523 [pixels]
Y_OFFSET:        599 [pixels]
X_MAX:           1482 [pixels]
Y_MAX:           1558 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00431605000msufc3857.fits
SUN_POSTN:       143.70d {+09h 34m 48s}  +14.40d {+14d 23' 42"}
SUN_DIST:        123.54 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      195.01d {+13h 00m 01s}  -11.96d {-11d 57' 39"}
MOON_DIST:       149.18 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.04,-77.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:57:16 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.468d {+01h 29m 52s} (J2000)
POINT_DEC:       -17.989d {-17d 59' 19"} (J2000)
POINT_ROLL:      84.376d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  17668.97 SOD {04:54:28.97} UT,   3857.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.045
N_STARS:         11
X_OFFSET:        523 [pixels]
Y_OFFSET:        599 [pixels]
X_MAX:           1482 [pixels]
Y_MAX:           1558 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00431605000msufc3857.fits
SUN_POSTN:       143.70d {+09h 34m 48s}  +14.40d {+14d 23' 42"}
SUN_DIST:        123.54 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      195.01d {+13h 00m 01s}  -11.96d {-11d 57' 39"}
MOON_DIST:       149.18 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.04,-77.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:57:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.468d {+01h 29m 52s} (J2000)
POINT_DEC:       -17.989d {-17d 59' 19"} (J2000)
POINT_ROLL:      84.376d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  17668.97 SOD {04:54:28.97} UT,   3857.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.045
N_STARS:         11
X_OFFSET:        523 [pixels]
Y_OFFSET:        599 [pixels]
X_MAX:           1482 [pixels]
Y_MAX:           1558 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00431605000msufc3857.fits
SUN_POSTN:       143.70d {+09h 34m 48s}  +14.39d {+14d 23' 42"}
SUN_DIST:        123.54 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      195.01d {+13h 00m 02s}  -11.96d {-11d 57' 45"}
MOON_DIST:       149.18 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.04,-77.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:58:40 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.468d {+01h 29m 52s} (J2000)
POINT_DEC:       -17.989d {-17d 59' 19"} (J2000)
ROLL:            84.376d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  17668.97 SOD {04:54:28.97} UT,   3857.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     303454475
X_OFFSET:        842 [pixels]
Y_OFFSET:        918 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1002
Y_GRB_POS:       1078
BINNING_INDEX:   1
IM_URL:          sw00431605000msuni3864.fits
SUN_POSTN:       143.70d {+09h 34m 48s}  +14.39d {+14d 23' 41"}
SUN_DIST:        123.55 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      195.02d {+13h 00m 04s}  -11.97d {-11d 57' 58"}
MOON_DIST:       149.18 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.04,-77.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 14 Aug 10 04:58:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     431605,   Seg_Num: 0
POINT_RA:         22.468d {+01h 29m 52s} (J2000)
POINT_DEC:       -17.989d {-17d 59' 19"} (J2000)
ROLL:            84.376d
IMG_START_DATE:  15422 TJD;   226 DOY;   10/08/14
IMG_START_TIME:  17668.97 SOD {04:54:28.97} UT,   3857.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     303454475
X_OFFSET:        842 [pixels]
Y_OFFSET:        918 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1002
Y_GRB_POS:       1078
BINNING_INDEX:   1
IM_URL:          sw00431605000msuni3864.fits
SUN_POSTN:       143.70d {+09h 34m 48s}  +14.39d {+14d 23' 41"}
SUN_DIST:        123.55 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:      195.02d {+13h 00m 05s}  -11.97d {-11d 58' 03"}
MOON_DIST:       149.18 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      169.04,-77.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       13.48,-25.34 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #11089
John O'Meara (Saint Michael's College), Hsiao-Wen Chen (UChicago), Jason X. Prochaska (UC Santa Cruz) report on behalf of a larger collaboration:
"We observed the afterglow of GRB100814A reported by Schaefer et al. (GCN 11086) and confirmed by Gronwall et al. (GCN 11088) using the MagE echellette spectrograph on the Magellan Clay Telescope. The observations started at UT 04:46 on August 14, 2010, ~ one hour after the inital trigger. We obtained a 900s exposure. Our preliminary reduction shows that the afterglow spectrum displays absorption transitions due to AlIII, FeII, and MgII at redshift z=1.44, which we tentatively identify as the host redsdhift of the GRB.
Further analysis is underway.
This message may be cited."
GCN Circular #11090
J. Gorosabel (IAA-CSIC), S. Rodriguez LLano (IAC), A.J. Castro-Tirado (IAA-CSIC), report on behalf of a larger collaboration:
"Following the detection of GRB 100814A by Swift (Beardmore et al. GCNC 11087) we have acquired a series of R-band images with the 0.82-m IAC80 telescope at Observatory of Teide, Tenerife, Spain. The first exposure started on Aug 14.1788 UT (~27.3 minutes post burst). The optical afterglow (Schaefer et al. GCNC 11086; Gronwall et al. GCN 11088) is detected with a preliminary magnitude of R~18.7, assuming a magnitude of R=16.87 for the USNO-B1.0 star placed at RA(J2000)=01:29:43.606, DEC(J2000)=-18:00:38.61."
GCN Circular #11091
R. Filgas, P. Schady and J. Greiner (MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 100814A (Swift trigger 431605; Beardmore et al., GCN #11087) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m MPI/ESO telescope at La Silla Observatory (Chile).
Observations started at 03:57 UT, 7 minutes after the GRB trigger at 03:50 UT, and are continuing. They were performed at an average seeing of 1.2" and at an average airmass of 2.
We detect a single point source in all GROND optical (g'r'i'z') and NIR bands (JHK) at a position consistent with the coordinates provided by Schaefer et al. (GCN #11086) and Gronwall et al. (GCN #11088), and consistent with the spectroscopic redshift of z=1.44 (O'Meara et al. GCN #11089).
The afterglow decays as a power law with a best-fit index of alpha ~ 0.5, decaying from r' = 18.0 +/- 0.1 at T+25 minutes down to r' = 19.5 +/- 0.1 (all in AB system) by the end of our observations, at T+6 hours. Analysis is on going.
Given magnitudes are calibrated against USNO zeropoints and are not corrected for the expected Galactic foreground extinction corresponding to a reddening of E(B-V)=0.02 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #11092
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 5031 s of XRT Photon Counting mode data and 6 UVOT images for GRB 100814A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 22.47308, -17.99503 which is equivalent to:
```
RA (J2000): 01h 29m 53.54s
Dec (J2000): -17d 59' 42.1"
```
with an uncertainty of 1.5 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #11093
Myungshin Im, Won-Kee Park (CEOU/Seoul National Univ), Soojong Pak, Hyeongju Jeong, Eunbin Kim, and Jinyoung Kim (Kyunghee University)
We observed GRB 100814A (Beardmore et al. GCN 11087) with the SDSS r- and i-filters during the commissioning run of CQUEAN (the Camera for QUasars in the Early uNiverse) on the 2.1m telescope at the McDonald Observatory. The observation started at 2010 August 14, 08:57:54 UT, about 5 hours after the BAT trigger.
A series of 180 secs exposures were taken, and we confirm the afterglow at the location reported by Schaefer et al. (GCN 11086) and Gorosabel et al.(GCN 11090). A preliminary photometry from a single frame with the mid-point time of 09:00:24 UT is r ~ 19.10 +- 0.03 AB mag (subject to systematic error in the zero point determination), consistent with the value reported by Filgas et al. (GCN 11091). The photometric calibration is based on a standard star observation on the same night (BD+17 4708).
We thank the staffs of the McDonalnd Observatory, Peter S. Odoms and John Kuehne for their assistance of the CQUEAN commissioning run.
GCN Circular #11094
H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 100814A (trigger #431605) (Beardmore, et al., GCN Circ. 11087). The BAT ground-calculated position is RA, Dec = 22.479, -17.990 deg which is
```
   RA(J2000)  =  01h 29m 55.0s 
   Dec(J2000) = -17d 59' 25.7" 
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 90%.
The mask-weighted light curve shows three FRED-like spikes starting around T-4 sec, T+60 sec and T+140 sec. Those spikes peak around T+5 sec, T+70 sec and T+145 sec. The low level emission is visible up to T+235 sec. T90 (15-350 keV) is 174.5 +- 9.4 sec (estimated error including systematics).
The time-averaged spectrum from T-3 to T+235 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.47 +- 0.04. The fluence in the 15-150 keV band is 9.0 +- 0.2 x 10^-06 erg/cm2. The 1-sec peak photon flux measured from T-0.06 sec in the 15-150 keV band is 2.5 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/431605/BA/
GCN Circular #11095
M. De Pasquale (MSSL-UCL) and C.J. Saxton (MSSL-UCL) report on the behalf of the Swift UVOT team:
The Swift/UVOT began settled observations of the field of GRB 100814A 153 s after the BAT trigger �(Beardmore et al. 2010, GCN Circ. 11087) with a finding chart in the u filter. We detect the optical afterglow in all filters except uvw2. The refined UVOT position is
```
�RA �(J2000) = 01h 29m 53.61s = 22.47338
�Dec (J2000) = -17d 59m 43.6s = -17.99545
```
with an estimated uncertainty of 0.6 arcsec (radius, 90% confidence, statistical + systematic). This is about 1.5 arcsec north of the UVOT-enhanced XRT position (Beardmore et al. 2010, GCN Circ. 11092).
Â Preliminary magnitudes, and 3-sigma upper limits for detecting a source in the finding charts and in co-added images are
```
Filter Â  Â  Â T_start Â  T_stop Â  Â Exp(s) Â  Â  Â Mag Â  Err
---------------------------------------------------------------------
Â  Â u (fc) Â  Â  Â 153 Â  Â  Â 403 Â  Â  Â   246 Â   Â  16.80  0.06
Â  Â v Â  Â  Â  Â  Â   458 Â  Â Â  627 Â  Â  Â   Â 39 Â   Â  Â 17.91  0.32
Â  Â b Â  Â  Â  Â  Â   408 Â  Â Â  721 Â  Â   Â  Â 53 Â  Â   Â 21.22  0.20
Â  Â u Â  Â  Â  Â  Â   153 Â  Â Â  701 Â  Â   Â 285 Â  Â   Â 16.84  0.06
Â uvw1 Â  Â  Â  Â 507 Â  Â  Â 676 Â  Â  Â   Â 39 Â  Â  Â  17.33  0.20
Â uvm2 Â  Â  Â  483 Â  Â    651 Â  Â  Â    39 Â  Â   Â 17.86  0.31
Â uvw2 Â  Â  Â  Â 434 Â  Â   602 Â  Â  Â     39 Â  Â >18.52 Â 3-sigma UL
Â white Â  Â  Â 3858 Â  Â  4211 Â  Â  Â   344 Â  Â  Â 18.63  0.07
-----------------------------------------------------------
```
Â The quoted magnitudes and upper limits have not been corrected for the expected Galactic extinction along the line of sight corresponding to a reddening of E_{B-V} = 0.02 mag (Schlegel, et al., 1998, ApJS, 500, 525). Â All photometry is on the UVOT photometry system described in Poole et al. (2008, MNRAS, 383, 627).
GCN Circular #11096
A. P. Beardmore (U Leicester) and C. J. Saxton (MSSL-UCL) report on behalf of the Swift-XRT team:
We have analysed 6.0 ks of XRT data for GRB 100814A (Beardmore et al. GCN Circ. 11087), from 76 s to 28.6 ks after the BAT trigger. The data comprise 721 s in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 11092).
The X-ray light curve initially rises by a factor of ~2 in count rate, reaching a broad peak at approximately T+160 s after the trigger, on top of which are superimposed three small flares at T+146, 176 and 220 s, respectively. At T+295 s the light curve falls with a steep decay of alpha=5.7 (+0.4, -0.3), then breaks to a shallow decay at T+517 s, after which it decays with an index of 0.47 (+0.03, -0.04).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.68 (+0.04, -0.03). The best-fitting absorption column is 5.0 (+/-0.8) x 10^20 cm^-2, in excess of the Galactic value of 1.8 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.90 (+0.11, -0.10) and a best-fitting absorption column of 3.1 (+2.2, -1.4) x 10^20 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.8 x 10^-11 (4.2 x 10^-11) erg cm^-2 count^-1.
If the light curve continues to decay with a power-law decay index of 0.47, the count rate at T+24 hours will be 0.18 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 7.0 x 10^-12 (7.7 x 10^-12) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00431605.
This circular is an official product of the Swift-XRT team.

GCN Circular #11097
M. De Pasquale (MSSL-UCL) and C.J. Saxton (MSSL-UCL) report on the behalf of the Swift UVOT team:
In the GCN circ 11095 (Swift/UVOT observations of GRB100814A) the table containing the information on epochs and magnitudes could not be read well because of a formatting problem. In the following, we rewrite the table with a clearer look.
We apologize for any inconvenience it might have caused.

Filter      T_start   T_stop    Exp(s)      Mag   Err
----------------------------------------------------------
    u (fc)    153      403        246      16.80  0.06
    v         458      627        39       17.91  0.32
    b         408      721        53       21.22  0.20
    u         153      701       285       16.84  0.06
  uvw1        507      676        39       17.33  0.20
  uvm2        483      651        39       17.86  0.31
  uvw2        434      602        39      >18.52  3-sigma UL
  white      3858     4211       344       18.63  0.07
----------------------------------------------------------

GCN Circular #11098
A. de Ugarte Postigo (INAF-OAB, DARK/NBI), C. de Breuck, A.J. Castro-Tirado (IAA-CSIC), G. Siringo, F.M. Montenegro-Montes, M. Martinez (APEX), A. Hacar (OAN), T. Stanke, A. Lundgren, M. Dumke (ESO) report on behalf of a larger collaboration:
"We have observed the field of GRB 100418A (Beardmore et al. GCNC 11087) using LABOCA/APEX at Chajnantor (Chile) in the 345 GHz band. Observations began on 15th August at 05:39 UT (25.8 hours after the burst onset). In a preliminary analysis we do not detect any new source at the position of the afterglow (Schaefer et al. GCNC 11086, De Pasquale et al. GCNC 11095) down to a 3-sigma limit of 5.4 mJy. The formal flux density at the position of the afterglow is 4.6+/-1.8 mJy."
GCN Circular #11099
A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team:
"At 03:50:08.81 UT on 14 August 2010, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 100814A (trigger 303450610 / 100814160), which was also detected by the Swift-BAT (Beardmore et al. 2008, GCN 11087) The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 87.2 degrees.
The GBM light curve consists of several pulses with a duration (T90) of about 149 +/- 1 s (50-300 keV). The time-averaged spectrum from T0+0.003 s to T0+157.57 s is best fit by a Band function with Epeak = 106.4 +13.9/-12.6 keV, alpha = -0.64 +0.14/-0.12, and beta = -2.02 +0.09/-0.12 (Castor C-STAT 807 for 484 d.o.f.).
The event fluence (10-1000 keV) in this time interval is (1.98 +/- 0.06)E-05 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+6.784 s in the 10-1000 keV band is 4.5 +/- 0.2 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #11100
M. De Pasquale (MSSL/UCL) and C. J. Saxton (MSSL/UCL) on behalf of the Swift/UVOT team report:
In the title of the GCN circular 11097 we mention "GRB100814B." It should have been "GRB100814A". Apologies for the mistake.
GCN Circular #11107
M. De Pasquale, C. J. Saxton, and S. R. Oates (MSSL/UCL) report, on behalf of the Swift/UVOT team:
Swift GRB 100814A (Beardmore et al. GCN circ 11087) shows an interesting optical/UV lightcurve, with a flux rise detected by UVOT between approximately 10,000 and 100,000 seconds after the trigger. At about 40 hours after the trigger, the afterglow was still of magnitude ~ 19 in the u and v filters. Ground based observatories are encouraged to follow up this event.
GCN Circular #11118
Y. Urata (NCU) and K.Y Huang (ASIAA) on behalf of EAFON report;
"We observed the GRB 100814A optical afterglow (Beardmore et al. GCN 11087) using Lulin One-meter Telescope (LOT) with g', r', i' and z'-band filters. The observation started at 2010 August 16 19:09 about 2.65 days after the trigger. All of images show the optical afterglow clearly. The brightness of the afterglow calibrated against USNO-B1 stars in the field is R~19.2. The afterglow decays only ~0.5 magnitude from our previous observation at August 14 (0.7 days after the burst). This interesting feature is also notified by Pasquale (# 11107).
Further observation is scheduled."
GCN Circular #11119
S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report:
The long GRB 100814A (Swift-BAT trigger=431605; Beardmore et al., GCN 11087; Krimm et al., GCN 11094) triggered Konus-Wind at T0=13811.288s UT (03:50:11.288)
The burst light curve consists of several pulses with a total duration of ~150 s. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB100814_T13811/
As observed by Konus-Wind the burst had a fluence of (1.2 +/- 0.2)x10-5 erg/cm2, and a 256-ms peak flux measured from T0+1.024s of (0.75 +/- 0.25)x10-6 erg/cm2/s (both in the 20 keV - 2 MeV energy range).
The time-integrated spectrum of the burst (from T0 to T0+155.904 s) is best fit in the 20 keV - 2 MeV range by a power law with exponential cutoff model, for which alpha = -0.4(-0.3, +0.4), and Ep = 128(-17, +23) keV (chi2 = 59/58 dof).
The spectrum at the maximum count rate (measured from T0 to T0+8.848 s) is best fit in the 20 keV - 2 MeV range by a power law with exponential cutoff model, for which alpha = 0.55 +/- 0.30, and Ep = 147(-10, +12) keV (chi2 = 55/58 dof).
All the quoted results are preliminary. All the quoted errors are at the 90% confidence level.
GCN Circular #11121
D. Malesani, J.P.U. Fynbo (DARK/NBI), D. Xu (Weizmann Inst.), P. Jakobsson (Univ. Iceland), L. Buchhave (NBI), report on behalf of a larger collaboration:
We observed the optical afterglow of GRB 100814A (Schaefer et al., GCN 11086; Beardmore et al., GCN 11087) with the NOT equipped with ALFOSC. Observations were carried out in the R band, with a mean time August 17.13 UT (2.97 days after the burst).
The optical afterglow is well detected, with R=19.5 compared to several USNO stars in the field. The error is about 0.3 mag, completely due to the scatter in the calibration stars.
GCN Circular #11122
Z. Cano (Liverpool JMU), C. Guidorzi (U.Ferrara) report on behalf of a larger collaboration:
We observed the optical afterglow of GRB 100814A (Schaefer et al., GCN 11086; Beardmore et al., GCN 11087) with the 2m Liverpool Telescope, starting at 22:16:09 UT on the 16th of August 2010, in filters r and i.
We clearly detect the afterglow in both filters with the following magnitudes:
```
======================================
 Filter   T-To (days)        Mag
--------------------------------------
   R        2.96       19.75 +/- 0.02
   I        2.93       18.32 +/- 0.04
======================================
```
The photometric calibration is performed against USNO-B1 objects 0720-0016107 (R2=19.58) and 0719-0016667 (I=17.27). Our detection is consistent with the values reported by Malesani et al. (GCN 11121). Observations are ongoing.
GCN Circular #11129
L. Elenin, I. Molotov (ISON), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 100814A (Beardmore et al. GCN 11087) with 0.45-m telescope =CFf ISON-NM observatory on Aug. 17 (UT) 10:07:17 - 10:48:07.
The afterglow (Schaefer et al. GCN 11086; Beardmore et al. GCN 11087) is well detected. Preliminary photometry of unfiltered image against USNO-B1.0 field stars (R) is following
```
T-T0,  filter, exposure,  OT
(day)
3.2689    W     300x7    19.79  +/- 0.05
```
the photometry error is statistical only.=20
GCN Circular #11131
Poonam Chandra (RMC), Dale A. Frail (NRAO) and S. Bradley Cenko (Berkeley) report on behalf of a larger collaboration:
"We observed the localization of GRB 100814A (Beardmore et al. GCN 11087) with the Expanded Very Large Array (EVLA) on August 18.38 UT at a C band wide receiver (receiver frequency range 4-8 GHz). We detect the radio afterglow of the GRB at the Swift-XRT position (Beardmore et al. GCN 11092) at 4.5 and 7.9 GHz frequencies. The flux densities at 4.5 and 7.9 GHz bands are 198+/-29 uJy and 453+/-23 uJy, respectively.
The EVLA is still undergoing active commissioning and we caution that these results should be considered preliminary. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
GCN Circular #11133
L. Elenin, I. Molotov (ISON), A. Volnova (SAI MSU), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We continue observation of the Swift GRB 100814A (Beardmore et al. GCN 11087) with 0.45-m telescope of ISON-NM observatory on Aug. 20 (UT) 08:42:06 - 09:33:14 and Aug. 21 (UT) 09:45:22 - 11:04:41.
The afterglow (Schaefer et al. GCN 11086; Beardmore et al. GCN 11087) is well detected on stacked images for both epochs. Preliminary photometry of unfiltered image against USNO-B1.0 star 0720-0016107, assuming R=19.73 is following:
```
T-T0,  filter, exposure,  OT
(day)

6.2205    W     300x10    21.66  +/- 0.23
7.2734    W     300x15    22.50  +/- 0.30
```
The photometry errors are statistical only.
The images of GRB100814A is available at:
http://spaceobs.org/images/GRB1000814A-3epoch.jpg
GCN Circular #11134
Y. Nishioka, N. Ohmori, A. Daikyuji, M. Yamauchi (Univ. of Miyazaki), T. Uehara, Y. Hanabata, T. Takahashi, Y. Fukazawa (Hiroshima U.), N. Vasquez (Tokyo Tech.) K. Yamaoka (Aoyama Gakuin U.), S. Sugita (Nagoya U.), Y. Terada, M. Tashiro, W. Iwakiri, K. Takahara, T. Yasuda (Saitama U.), M. Ohno, M. Suzuki, M. Kokubun, T. Takahashi (ISAS/JAXA), Y. E. Nakagawa, T. Tamagawa (RIKEN), Y. Urata, P. Tsai (NCU), K. Nakazawa, K. Makishima (Univ. of Tokyo), S. Hong (Nihon U.), on behalf of the Suzaku WAM team, report:
The long GRB 100814A (Swift/BAT trigger #431605 ; Krimm et al., GCN 11094; Fermi/GBM trigger #303450610 ; von Kienlin et al., GCN 11099) triggered the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV at 03:50:08.51 UT (=T0).
The observed light curve shows a multi-peaked structure starting at T0-1.5s, ending at T0+19.5s, followed by a weaker emission seen up to T0+150.5s with a duration (T90) of about 110 seconds. The fluence in 100 - 1000 keV was 7.14(+1.03/-1.37) x 10^-6 erg/cm^2. The 1-s peak flux measured from T0+0.5s was 2.00(-0.48,+0.40) photons/cm^2/s in the same energy range.
Preliminary result shows that the time-averaged spectrum from T0-1.5s to T0+150.5s is well fitted by a single power-law with a photon index of 3.18(+1.03/-0.7) (chi^2/d.o.f = 13.32/15).
All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included.
The light curves for this burst are available at:
http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html
GCN Circular #11153
A. Volnova (SAI MSU), A. Pozanenko (IKI), O. Vozyakova (SAI MSU), B. Satovski (Astrotel), M. Im (Seoul National Univ), M. Ibrahimov (MAO) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 100814A (Beardmore et al. GCN 11087) with AZT-22 telescope of Maidanak observatory. Several images in R were obtained starting on Aug. 14 (UT) 22:56:44. We clearly the afterglow (Schaefer et al. GCN 11086; Beardmore et al. GCN 11087). The photometry of stacked image against USNO-B1.0 field stars is following
```
 t-T0,       Filter,   Exposure,    OT,       Upper limit (3 sigma)
(mid, d)               (s)
0.81185   R         30*60         18.75+/-0.01          23.4
```
the photometry error is statistical only.
GCN Report 303.1
GCN_Report 303.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_303_1.pdf by C. Saxton at MSSL-UCL titled: "Final report on Swift Observations of GRB 100814A"
1206.5199 from 25 Jun 12
Massimiliano De Pasquale et al.: GRB100814A as a member of the growing set of bursts with sudden optical rebrightening
We present the gamma-ray, X-ray, optical and radio data for GRB100814A. At the end of the slow decline phase of the X-ray and optical afterglow, a sudden and prominent rebrightening in the optical band occurs followed by a fast decay in both bands. This optical rebrightening is accompanied by possible chromatic variations. We discuss possible interpretations, such as double component scenarios and internal dissipation mechanism, with their virtues and drawbacks. We also compare GRB100814A with other Swift bursts that show optical rebrightenings with similar properties.
1312.1335 from 6 Dec 13
M. Nardini et al.: Afterglow rebrightenings as a signature of a long-lasting central engine activity? The emblematic case of GRB 100814A
In the past few years the number of well-sampled optical to NIR light curves of long Gamma-Ray Bursts (GRBs) has greatly increased particularly due to simultaneous multi-band imagers such as GROND. Combining these densely sampled ground-based data sets with the Swift UVOT and XRT space observations unveils a much more complex afterglow evolution than what was predicted by the most commonly invoked theoretical models. GRB 100814A represents a remarkable example of these interesting well-sampled events, showing a prominent late-time rebrightening in the optical to NIR bands and a complex spectral evolution. This represents a unique laboratory to test the different afterglow emission models. Here we study the nature of the complex afterglow emission of GRB 100814A in the framework of different theoretical models. Moreover, we compare the late-time chromatic rebrightening with those observed in other well-sampled long GRBs. We analysed the optical and NIR observations obtained with the seven-channel Gamma-Ray burst Optical and Near-infrared Detector at the 2.2 m MPG/ESO telescope together with the X-ray and UV data detected by the instruments onboard the Swift observatory. The broad-band afterglow evolution, achieved by constructing multi-instrument light curves and spectral energy distributions, will be discussed in the framework of different theoretical models. We find that the standard models that describe the broad-band afterglow emission within the external shock scenario fail to describe the complex evolution of GRB 100814A, and therefore more complex scenarios must be invoked. [abridged]
1312.1648 from 6 Dec 13
Massimiliano De Pasquale et al.: The optical rebrightening of GRB100814A: an interplay of forward and reverse shocks?
We present a wide dataset of gamma-ray, X-ray, UVOIR, and radio observations of the Swift GRB100814A. At the end of the slow decline phase of the X-ray and optical afterglow, this burst shows a sudden and prominent rebrightening in the optical band only, followed by a fast decay in both bands. The optical rebrightening also shows chromatic evolution. Such a puzzling behaviour cannot be explained by a single component model. We discuss other possible interpretations, and we find that a model that incorporates a long-lived Reverse Shock and Forward Shock fits the temporal and spectral properties of GRB100814 the best. We also touch upon other GRBs presenting a behaviour similar to that of GRB100814A, such as GRB081029 and GRB100621A.
1504.01824 from 9 Apr 15
Y. B. Yu et al.: Signature of a spin-up magnetar from multi-band afterglow rebrightening of GRB 100814A
In recent years, more and more gamma-ray bursts with late rebrightenings in multi-band afterglows unveil the late-time activities of the central engines. GRB 100814A is a special one among the well-sampled events, with complex temporal and spectral evolution. The single power-law shallow decay index of the optical light curve observed by GROND between 640 s and 10 ks is $\alpha_{\rm opt} = 0.57 \pm 0.02$, which apparently conflicts with the simple external shock model expectation. Especially, there is a remarkable rebrightening in the optical to near infrared bands at late time, challenging the external shock model with synchrotron emission coming from the interaction of the blast wave with the surrounding interstellar medium. In this paper, we invoke a magnetar with spin evolution to explain the complex multi-band afterglow emission of GRB 100814A. The initial shallow decay phase in optical bands and the plateau in X-ray can be explained as due to energy injection from a spin-down magnetar. At late time, with the falling of materials from the fall-back disk onto the central object of the burster, angular momentum of the accreted materials is transferred to the magnetar, which leads to a spin-up process. As a result, the magnetic dipole radiation luminosity will increase, resulting in the significant rebrightening of the optical afterglow. It is shown that the observed multi-band afterglow emission can be well reproduced by the model.
1605.01334 from 5 May 16
J. J. Geng et al.: Imprints of Electron-positron Winds on the Multi-wavelength Afterglows of Gamma-ray Bursts
Optical re-brightenings in the afterglows of some gamma-ray bursts (GRBs) are unexpected within the framework of the simple external shock model. While it has been suggested that the central engines of some GRBs are newly born magnetars, we aim to relate the behaviors of magnetars to the optical re-brightenings. A newly born magnetar will lose its rotational energy in the form of Poynting-flux, which may be converted into a wind of electron-positron pairs through some magnetic dissipation processes. As proposed by Dai (2004), this wind will catch up with the GRB outflow and a long-lasting reverse shock would form. By applying this scenario to GRB afterglows, we find that the reverse shock propagating back into the electron-positron wind can lead to an observable optical re-brightening and a simultaneous X-ray plateau (or X-ray shallow decay). In our study, we select four GRBs, i.e., GRB 080413B, GRB 090426, GRB 091029, and GRB 100814A, of which the optical afterglows are well observed and show clear re-brightenings. We find that they can be well interpreted. In our scenario, the spin-down timescale of the magnetar should be slightly smaller than the peak time of the re-brightening, which can provide a clue to the characteristics of the magnetar.

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