Gamma-ray Burst 140512A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:33:16 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     598819,   Seg_Num: 0
GRB_RA:          289.371d {+19h 17m 29s} (J2000),
                 289.575d {+19h 18m 18s} (current),
                 288.659d {+19h 14m 38s} (1950)
GRB_DEC:         -15.100d {-15d 05' 59"} (J2000),
                 -15.073d {-15d 04' 23"} (current),
                 -15.191d {-15d 11' 26"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4739 [cnts]    Image_Peak=210 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       20657 [cnts]
BKG_TIME:        70291.99 SOD {19:31:31.99} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16789 TJD;   132 DOY;   14/05/12
GRB_TIME:        70309.21 SOD {19:31:49.21} UT
GRB_PHI:         163.91 [deg]
GRB_THETA:        41.70 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     38.26 [sigma]
IMAGE_SIGNIF:    9.32 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  +0  +0  +0 +53  +0 
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.26d {+18d 15' 51"}
SUN_DIST:        122.68 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      204.97d {+13h 39m 52s}  -10.57d {-10d 34' 01"}
MOON_DIST:        82.13 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      288.83,  7.08 [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 = 76.29,15.33 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(7.0<100sec) coincident with the FERMI_GBM event (trignum=421615905).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 12 May 14 19:32:07 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      44
TRIGGER_NUM:     421615905
GRB_RA:          284.533d {+18h 58m 08s} (J2000),
                 284.740d {+18h 58m 58s} (current),
                 283.812d {+18h 55m 15s} (1950)
GRB_DEC:         -16.700d {-16d 41' 59"} (J2000),
                 -16.680d {-16d 40' 46"} (current),
                 -16.768d {-16d 46' 04"} (1950)
GRB_ERROR:       28.83 [deg radius, statistical plus systematic]
GRB_INTEN:       49 [cnts/sec]
DATA_SIGNIF:     4.50 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        16789 TJD;   132 DOY;   14/05/12
GRB_TIME:        70302.50 SOD {19:31:42.50} UT
GRB_PHI:          35.00 [deg]
GRB_THETA:        35.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.94
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      95%  GRB
2nd_MOST_LIKELY:   2%  SGR_1806n20
DETECTORS:       1,1,0, 0,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:        49.58d {+03h 18m 18s}  +18.26d {+18d 15' 50"}
SUN_DIST:        127.56 [deg]   Sun_angle= 8.3 [hr] (West of Sun)
MOON_POSTN:      204.96d {+13h 39m 49s}  -10.56d {-10d 33' 50"}
MOON_DIST:        77.31 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       18.69, -8.97 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      283.99,  6.04 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140512814/quicklook/glg_lc_medres34_bn140512814.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 98.75,20.23 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 12 May 14 19:32:16 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      57
TRIGGER_NUM:     421615905
GRB_RA:          305.133d {+20h 20m 32s} (J2000),
                 305.347d {+20h 21m 23s} (current),
                 304.387d {+20h 17m 33s} (1950)
GRB_DEC:         -24.817d {-24d 49' 00"} (J2000),
                 -24.771d {-24d 46' 13"} (current),
                 -24.975d {-24d 58' 31"} (1950)
GRB_ERROR:       7.93 [deg radius, statistical plus systematic]
GRB_INTEN:       291 [cnts/sec]
DATA_SIGNIF:     26.10 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        16789 TJD;   132 DOY;   14/05/12
GRB_TIME:        70302.50 SOD {19:31:42.50} UT
GRB_PHI:          13.00 [deg]
GRB_THETA:        50.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.67
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      95%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       1,1,0, 0,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:        49.58d {+03h 18m 18s}  +18.26d {+18d 15' 50"}
SUN_DIST:        110.08 [deg]   Sun_angle= 6.9 [hr] (West of Sun)
MOON_POSTN:      204.96d {+13h 39m 50s}  -10.56d {-10d 33' 52"}
MOON_DIST:        94.83 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       18.47,-29.84 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      301.63, -5.15 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140512814/quicklook/glg_lc_medres34_bn140512814.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 98.75,20.23 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 12 May 14 19:32:37 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      56
TRIGGER_NUM:     421615905
GRB_RA:          261.760d {+17h 27m 02s} (J2000),
                 261.994d {+17h 27m 59s} (current),
                 260.946d {+17h 23m 47s} (1950)
GRB_DEC:         -32.200d {-32d 12' 00"} (J2000),
                 -32.211d {-32d 12' 40"} (current),
                 -32.158d {-32d 09' 28"} (1950)
GRB_ERROR:       12.23 [deg radius, statistical only]
DATA_SIGNIF:     5.90 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16789 TJD;   132 DOY;   14/05/12
GRB_TIME:        70302.50 SOD {19:31:42.50} UT
GRB_PHI:           0.00 [deg]
GRB_THETA:        12.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:        49.58d {+03h 18m 18s}  +18.26d {+18d 15' 51"}
SUN_DIST:        147.71 [deg]   Sun_angle= 9.8 [hr] (West of Sun)
MOON_POSTN:      204.96d {+13h 39m 50s}  -10.57d {-10d 33' 55"}
MOON_DIST:        56.61 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      355.10,  1.61 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      262.95, -8.96 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140512814/quicklook/glg_lc_medres34_bn140512814.gif
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Mon 12 May 14 19:32:58 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      67
TRIGGER_NUM:     421615905
GRB_RA:          286.710d {+19h 06m 50s} (J2000),
                 286.928d {+19h 07m 43s} (current),
                 285.950d {+19h 03m 48s} (1950)
GRB_DEC:         -23.980d {-23d 58' 47"} (J2000),
                 -23.957d {-23d 57' 24"} (current),
                 -24.058d {-24d 03' 29"} (1950)
GRB_ERROR:       2.42 [deg radius, statistical only]
DATA_SIGNIF:     30.70 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16789 TJD;   132 DOY;   14/05/12
GRB_TIME:        70302.50 SOD {19:31:42.50} UT
GRB_PHI:          21.00 [deg]
GRB_THETA:        34.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.26d {+18d 15' 51"}
SUN_DIST:        126.54 [deg]   Sun_angle= 8.2 [hr] (West of Sun)
MOON_POSTN:      204.96d {+13h 39m 51s}  -10.57d {-10d 33' 58"}
MOON_DIST:        78.46 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       12.83,-13.88 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      285.24, -1.42 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140512814/quicklook/glg_lc_medres34_bn140512814.gif
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:34:10 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     598819,   Seg_Num: 0
GRB_RA:          289.3562d {+19h 17m 25.48s} (J2000),
                 289.5605d {+19h 18m 14.52s} (current),
                 288.6444d {+19h 14m 34.66s} (1950)
GRB_DEC:         -15.1004d {-15d 06' 01.4"} (J2000),
                 -15.0738d {-15d 04' 25.5"} (current),
                 -15.1910d {-15d 11' 27.7"} (1950)
GRB_ERROR:       5.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       2.97e-08 [erg/cm2/sec]
GRB_SIGNIF:      6.00 [sigma]
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70407.58 SOD {19:33:27.58} UT,   98.4 [sec] since BAT Trigger Time
TAM[0-3]:        327.67 237.21 261.55 243.68
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.26d {+18d 15' 52"}
SUN_DIST:        122.70 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      204.97d {+13h 39m 54s}  -10.57d {-10d 34' 09"}
MOON_DIST:        82.11 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.47 [deg] galactic lon,lat of the burst
ECL_COORDS:      288.81,  7.08 [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:     Mon 12 May 14 19:34:20 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     598819,   Seg_Num: 0
GRB_RA:          289.3562d {+19h 17m 25.4s} (J2000),
                 289.5605d {+19h 18m 14.5s} (current),
                 288.6444d {+19h 14m 34.6s} (1950)
GRB_DEC:         -15.1004d {-15d 06' 01.4"} (J2000),
                 -15.0738d {-15d 04' 25.5"} (current),
                 -15.1910d {-15d 11' 27.7"} (1950)
GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       36 [cnts]
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70407.58 SOD {19:33:27.58} UT,   98.4 [sec] since BAT Trigger Time
CENTROID_X:      332.22,  raw= 332  [pixels]
CENTROID_Y:      311.08,  raw= 311  [pixels]
ROLL:            77.74 [deg]
GAIN:            2
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   31.32
GRB_POS_XRT_Z:   63.46
IMAGE_URL:       sw00598819000msxps_rw.img
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.26d {+18d 15' 52"}
SUN_DIST:        122.70 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      204.98d {+13h 39m 54s}  -10.57d {-10d 34' 10"}
MOON_DIST:        82.11 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.47 [deg] galactic lon,lat of the burst
ECL_COORDS:      288.81,  7.08 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
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:     Mon 12 May 14 19:35:52 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     598819,   Seg_Num: 0
GRB_RA:          289.371d {+19h 17m 29s} (J2000),
                 289.575d {+19h 18m 18s} (current),
                 288.659d {+19h 14m 38s} (1950)
GRB_DEC:         -15.100d {-15d 05' 59"} (J2000),
                 -15.073d {-15d 04' 23"} (current),
                 -15.191d {-15d 11' 26"} (1950)
GRB_DATE:        16789 TJD;   132 DOY;   14/05/12
GRB_TIME:        70309.21 SOD {19:31:49.21} UT
TRIGGER_INDEX:   155
GRB_PHI:         163.91 [deg]
GRB_THETA:        41.70 [deg]
DELTA_TIME:      38.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     38.26 [sigma]
IMAGE_SIGNIF:    9.32 [sigma]
LC_URL:          sw00598819000msb.lc
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.26d {+18d 15' 53"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      204.99d {+13h 39m 57s}  -10.57d {-10d 34' 25"}
MOON_DIST:        82.11 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      288.83,  7.08 [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 = 76.29,15.33 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:36:39 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.377d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.102d {-15d 06' 08"} (J2000)
POINT_ROLL:      77.734d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70416.16 SOD {19:33:36.16} UT,   106.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.267
N_STARS:         190
X_OFFSET:        424 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00598819000msufc0106.fits
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.26d {+18d 15' 53"}
SUN_DIST:        122.68 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.00d {+13h 39m 59s}  -10.58d {-10d 34' 32"}
MOON_DIST:        82.11 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:37:06 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.377d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.102d {-15d 06' 08"} (J2000)
POINT_ROLL:      77.734d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70416.16 SOD {19:33:36.16} UT,   106.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.267
N_STARS:         190
X_OFFSET:        424 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00598819000msufc0106.fits
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.26d {+18d 15' 53"}
SUN_DIST:        122.68 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.00d {+13h 40m 00s}  -10.58d {-10d 34' 36"}
MOON_DIST:        82.10 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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:     Mon 12 May 14 19:38:31 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.377d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.102d {-15d 06' 08"} (J2000)
ROLL:            77.734d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70416.16 SOD {19:33:36.16} UT,   106.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     421616028
X_OFFSET:        653 [pixels]
Y_OFFSET:        882 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       813
Y_GRB_POS:       1042
BINNING_INDEX:   1
IM_URL:          sw00598819000msuni0119.fits
SUN_POSTN:        49.58d {+03h 18m 19s}  +18.27d {+18d 15' 54"}
SUN_DIST:        122.68 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.01d {+13h 40m 03s}  -10.58d {-10d 34' 49"}
MOON_DIST:        82.09 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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:     Mon 12 May 14 19:39:02 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.377d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.102d {-15d 06' 08"} (J2000)
ROLL:            77.734d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70416.16 SOD {19:33:36.16} UT,   106.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     421616028
X_OFFSET:        653 [pixels]
Y_OFFSET:        882 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       813
Y_GRB_POS:       1042
BINNING_INDEX:   1
IM_URL:          sw00598819000msuni0119.fits
SUN_POSTN:        49.58d {+03h 18m 20s}  +18.27d {+18d 15' 55"}
SUN_DIST:        122.68 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.02d {+13h 40m 04s}  -10.58d {-10d 34' 53"}
MOON_DIST:        82.09 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:43:18 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 18"} (J2000)
POINT_ROLL:      77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70628.36 SOD {19:37:08.36} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.099
N_STARS:         190
X_OFFSET:        333 [pixels]
Y_OFFSET:        562 [pixels]
X_MAX:           1292 [pixels]
Y_MAX:           1521 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00598819000msufc0319.fits
SUN_POSTN:        49.58d {+03h 18m 20s}  +18.27d {+18d 15' 57"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.06d {+13h 40m 14s}  -10.59d {-10d 35' 32"}
MOON_DIST:        82.05 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:43:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 18"} (J2000)
POINT_ROLL:      77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70628.36 SOD {19:37:08.36} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.099
N_STARS:         190
X_OFFSET:        333 [pixels]
Y_OFFSET:        562 [pixels]
X_MAX:           1292 [pixels]
Y_MAX:           1521 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00598819000msufc0319.fits
SUN_POSTN:        49.58d {+03h 18m 20s}  +18.27d {+18d 15' 58"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.06d {+13h 40m 14s}  -10.59d {-10d 35' 36"}
MOON_DIST:        82.04 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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:     Mon 12 May 14 19:44:42 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 18"} (J2000)
ROLL:            77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70628.36 SOD {19:37:08.36} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     421616240
X_OFFSET:        653 [pixels]
Y_OFFSET:        882 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       813
Y_GRB_POS:       1042
BINNING_INDEX:   1
IM_URL:          sw00598819000msuni0332.fits
SUN_POSTN:        49.59d {+03h 18m 20s}  +18.27d {+18d 15' 58"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.07d {+13h 40m 17s}  -10.60d {-10d 35' 45"}
MOON_DIST:        82.03 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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:     Mon 12 May 14 19:45:02 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 18"} (J2000)
ROLL:            77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  70628.36 SOD {19:37:08.36} UT,   319.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     421616240
X_OFFSET:        653 [pixels]
Y_OFFSET:        882 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       813
Y_GRB_POS:       1042
BINNING_INDEX:   1
IM_URL:          sw00598819000msuni0332.fits
SUN_POSTN:        49.59d {+03h 18m 21s}  +18.27d {+18d 15' 58"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.07d {+13h 40m 17s}  -10.60d {-10d 35' 48"}
MOON_DIST:        82.03 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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 #16248
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, D.Denisenko, A.Sankovich Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
V.Krushinsky, I.Zalozhnih, A. Popov Ural Federal University, Yekaterinburg, Kourovka
Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Tunka was pointed to the GRB140512A 171 sec after trigger time at 2014-05-12 19:34:40.212 UT. On our first (30s exposure) set we haven`t found optical transient within SWIFT error-box (ra=19 17 28 dec=-15 06 00 r=0.050000). The 5-sigma upper limit has been about 16.2 mag Observations were made in twilight. The message may be cited.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:49:43 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 17"} (J2000)
POINT_ROLL:      77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  71182.32 SOD {19:46:22.32} UT,   873.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.929
N_STARS:         190
X_OFFSET:        93 [pixels]
Y_OFFSET:        322 [pixels]
X_MAX:           1532 [pixels]
Y_MAX:           1761 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00598819000msufc0873.fits
SUN_POSTN:        49.59d {+03h 18m 21s}  +18.27d {+18d 16' 01"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.11d {+13h 40m 27s}  -10.61d {-10d 36' 31"}
MOON_DIST:        81.99 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:49:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 17"} (J2000)
POINT_ROLL:      77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  71182.32 SOD {19:46:22.32} UT,   873.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.929
N_STARS:         190
X_OFFSET:        93 [pixels]
Y_OFFSET:        322 [pixels]
X_MAX:           1532 [pixels]
Y_MAX:           1761 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00598819000msufc0873.fits
SUN_POSTN:        49.59d {+03h 18m 21s}  +18.27d {+18d 16' 01"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.12d {+13h 40m 28s}  -10.61d {-10d 36' 34"}
MOON_DIST:        81.98 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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:     Mon 12 May 14 19:51:22 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 17"} (J2000)
ROLL:            77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  71182.32 SOD {19:46:22.32} UT,   873.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     421616794
X_OFFSET:        652 [pixels]
Y_OFFSET:        881 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       812
Y_GRB_POS:       1041
BINNING_INDEX:   1
IM_URL:          sw00598819000msuni0886.fits
SUN_POSTN:        49.59d {+03h 18m 22s}  +18.27d {+18d 16' 02"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.13d {+13h 40m 31s}  -10.61d {-10d 36' 46"}
MOON_DIST:        81.97 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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:     Mon 12 May 14 19:51:29 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     598819,   Seg_Num: 0
POINT_RA:        289.376d {+19h 17m 30s} (J2000)
POINT_DEC:       -15.105d {-15d 06' 17"} (J2000)
ROLL:            77.737d
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  71182.32 SOD {19:46:22.32} UT,   873.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     421616794
X_OFFSET:        652 [pixels]
Y_OFFSET:        881 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       812
Y_GRB_POS:       1041
BINNING_INDEX:   1
IM_URL:          sw00598819000msuni0886.fits
SUN_POSTN:        49.59d {+03h 18m 22s}  +18.27d {+18d 16' 02"}
SUN_DIST:        122.69 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.13d {+13h 40m 31s}  -10.61d {-10d 36' 47"}
MOON_DIST:        81.97 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.19,-12.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      288.83,  7.08 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 19:53:16 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     598819,   Seg_Num: 0
GRB_RA:          289.3699d {+19h 17m 28.77s} (J2000),
                 289.5742d {+19h 18m 17.81s} (current),
                 288.6582d {+19h 14m 37.95s} (1950)
GRB_DEC:         -15.0942d {-15d 05' 39.1"} (J2000),
                 -15.0675d {-15d 04' 03.1"} (current),
                 -15.1849d {-15d 11' 05.6"} (1950)
GRB_ERROR:       0.6 [arcsec radius, statistical only]
GRB_MAG:         17.07 +/- 0.14 [mag]
FILTER:          10, White
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  71181.00 SOD {19:46:21.00} UT,   871.8 [sec] since BAT Trigger Time
SUN_POSTN:        49.59d {+03h 18m 22s}  +18.27d {+18d 16' 04"}
SUN_DIST:        122.70 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.15d {+13h 40m 35s}  -10.62d {-10d 37' 04"}
MOON_DIST:        81.95 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.20,-12.48 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      288.83,  7.09 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT UVOT Position Notice.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The UVOT position is 52.6 arcsec from the XRT position.  
COMMENTS:        Result based on Genie data.  
COMMENTS:        Notice generated automatically.

GCN Circular #16249
C. Pagani (U Leicester), S. D. Barthelmy (GSFC), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), V. Mangano (PSU), C. J. Mountford (U Leicester), K. L. Page (U Leicester), B. Sbarufatti (INAF-OAB/PSU), M. H. Siegel (PSU), C. A. Swenson (PSU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
At 19:31:49 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140512A (trigger=598819). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 289.371, -15.100 which is
```
   RA(J2000)  =  19h 17m 29s
   Dec(J2000) = -15d 05' 59"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a multi-peak event with a total duration of about 170 sec. The peak count rate was ~8000 counts/sec (15-350 keV), at ~122 sec after the trigger.
The XRT began observing the field at 19:33:27.5 UT, 98.4 seconds after the BAT trigger. The position determined from promptly downlinked data differs significantly from the on-board position, suggesting that the XRT may have centroided on a cosmic ray; the initial XRT position notice should be treated with caution. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 289.36925, -15.09492 which is equivalent to:
```
   RA(J2000)  = 19h 17m 28.62s
   Dec(J2000) = -15d 05' 41.7"
```
with an uncertainty of 3.6 arcseconds (radius, 90% containment). This location is 19 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. No spectrum from the promptly downlinked event data is yet available to determine the column density.
UVOT took a finding chart exposure of 150 seconds with the White filter starting 106 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at
```
  RA(J2000)  =	19:17:28.78 = 289.36991
  DEC(J2000) = -15:05:39.2  = -15.09423
```
with a 90%-confidence error radius of about 0.61 arc sec. This position is 3.4 arc sec. from the center of the XRT error circle. The estimated magnitude is 15.01 with a 1-sigma error of about 0.14. No correction has been made for the expected extinction corresponding to E(B-V) of 0.16.
Burst Advocate for this burst is C. Pagani (cp232 AT star.le.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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 12 May 14 20:07:19 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     598819,   Seg_Num: 0
GRB_RA:          289.3692d {+19h 17m 28.60s} (J2000),
                 289.5735d {+19h 18m 17.64s} (current),
                 288.6575d {+19h 14m 37.79s} (1950)
GRB_DEC:         -15.0949d {-15d 05' 41.6"} (J2000),
                 -15.0682d {-15d 04' 05.6"} (current),
                 -15.1856d {-15d 11' 08.1"} (1950)
GRB_ERROR:       3.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16789 TJD;   132 DOY;   14/05/12
IMG_START_TIME:  71239.00 SOD {19:47:19.00} UT,   929.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        49.60d {+03h 18m 24s}  +18.27d {+18d 16' 12"}
SUN_DIST:        122.71 [deg]   Sun_angle= 8.0 [hr] (West of Sun)
MOON_POSTN:      205.27d {+13h 41m 06s}  -10.65d {-10d 39' 12"}
MOON_DIST:        81.82 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:       22.20,-12.48 [deg] galactic lon,lat of the burst
ECL_COORDS:      288.82,  7.09 [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 #16250
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, D.Denisenko, A.Sankovich Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
V.Krushinsky, I.Zalozhnih, A. Popov Ural Federal University, Yekaterinburg, Kourovka
Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Tunka was pointed to the GRB140512A 171 sec after trigger time at 2014-05-12 19:34:40.212 UT in two polarizations. We definetly see OT (Pagani et. al. GCN 16249) on our images in bosh polarizations.
The preliminary automatic light curve available at Tab.1 and here: http://master.sai.msu.ru/static/GRB/GRB140512A_lc.png
Table 1. GRB140512B early automatic light curve.
```
        T_start         T-T_trig   mag
  2014-05-12 19:34:44.3  175 sec  13.5
  2014-05-12 19:36:36.3  287 sec  13.9
  2014-05-12 19:38:21.9  392 sec  14.5
  2014-05-12 19:39:43.7  474 sec  14.8
  2014-05-12 19:41:05.3  556 sec  15.1
  2014-05-12 19:42:26.3  637 sec  15.2
  2014-05-12 19:43:47.3  718 sec  15.5
  2014-05-12 19:45:56.8  847 sec  16.2
```
Our unfiltered magnitude is well described by a parity 0.8R + 0.2B (USNO-B1)
The power low index alpha from 175 to 847 seconds after the trigger is 1.5 +- 0.1 (F ~ t-apha).
We erraticly reported (Ivanov et. al. GCN 16248) that we don't see object earlier because of the wrong identification. We are sorry for it.
The message may be cited.
GCN Circular #16251
E. Klunko (ISTP), A. Volnova (IKI), M. Eselevich (ISTP), I. Korobtsev (ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 140512A (Pagani et al., GCN 16249) with AZT-33IK telescope of Sayan observatory (Mondy). We took several images in R-filter of 60 s exposure starting on May, 12 (UT) 19:56:58. We clearly detect a fading optical transient in the position reported early (Pagani et al., GCN 16249). A brightness of the OT in the first image is about R=16.7 (at (UT) 19:57:28, mid time). Observation is continuing.
The finding chart can be found in http://grb.rssi.ru/GRB140512A/GRB140512A_AZT33IK_R_fc.png
GCN Circular #16253
A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), J. Gorosabel (IAA-CSIC, UPV-EHU), D. Xu (DARK/NBI), T. Kruehler (ESO), A.A. Djupvik (NOT), E. Gafton (OKC, Stockholm Univ.) and T. Libbrecht (Stockholm Univ.) report on behalf of a larger collaboration:
We have observed the field of GRB 140512A (Pagani et al. GCN 16249) with the AlFOSC instrument on the 2.5 m Nordic Optical Telescope (La Palma, Spain), as part of the Stockholm remote observing school. Observations consisted of 3x300s imaging in R, starting at 02:10 UT (6.65 hrs after the burst). Observations were performed under variable seeing conditions of 2.0-2.5". Preliminary photometry, based on the USNO-B1.0 catalogue yields R~19.5 mag. Spectroscopic observations are ongoing.
GCN Circular #16255
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 5222 s of XRT Photon Counting mode data and 10 UVOT images for GRB 140512A, 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 = 289.37006, -15.09430 which is equivalent to:
```
RA (J2000): 19h 17m 28.81s
Dec (J2000): -15d 05' 39.5"
```
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 #16256
P.A. Evans (U. Leicester), B.P. Gompertz (U. Leicester), V. D'Elia (ASDC), M. de Pasquale (INAF-IASFPA), A. Maselli (INAF-IASFPA), V. Mangano (PSU), M.C. Stroh (PSU), D.N. Burrows (PSU), J.P. Osborne (U. Leicester) and C. Pagani report on behalf of the Swift-XRT team:
We have analysed 6.1 ks of XRT data for GRB 140512A (Pagani et al. GCN Circ. 16249), from 87 s to 12.6 ks after the BAT trigger. The data comprise 841 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 late-time light curve (from T0+4.6 ks) can be modelled with a power-law decay with a decay index of alpha=1.06 (+/-0.09).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.460 (+0.029, -0.016). The best-fitting absorption column is consistent with the Galactic value of 1.5 x 10^21 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 1.80 (+/-0.07) and a best-fitting absorption column of 2.02 (+0.28, -0.26) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.0 x 10^-11 (5.1 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     2.02 (+0.28, -0.26) x 10^21 cm^-2
Galactic foreground: 1.5 x 10^21 cm^-2
Excess significance: 3.4 sigma
Photon index:	     1.80 (+/-0.07)
```
If the light curve continues to decay with a power-law decay index of 1.06, the count rate at T+24 hours will be 0.15 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 5.8 x 10^-12 (7.4 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/00598819.
This circular is an official product of the Swift-XRT team.
GCN Circular #16257
J. Graham, K. Varela, C. Delvaux and J. Greiner (all MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 140512A (Pagani et al., GCN 16249) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2m MPG telescope at La Silla Observatory (Chile).
Observations started at 03:36 UT on May 13, about 8.0 hrs after the GRB trigger. They were performed at an average seeing of 1.7" and at an average airmass of 2.3.
The afterglow discovered by Gorbovskoy et al. (GCN 16250) is detected in all optical bands and the JH bands. At a mean time of 04:02 UT, with a 264 s exposure in g'r'i'z' bands and 240 s in JHK, we measure the following preliminary AB magnitudes:
```
g'= 20.3 +/- 0.1 mag,
r'= 19.7 +/- 0.1 mag,
i'= 19.5 +/- 0.1 mag,
z'= 19.3 +/- 0.1 mag,
J = 19.0 +/- 0.1 mag,
H = 18.6 +/- 0.1 mag, and
K > 18.2 mag.
```
The given optical and NIR magnitudes are calibrated against GROND zeropoints and 2MASS field stars in g'r'i'z and JHK respectively, and are not corrected for the Galactic foreground extinction corresponding to a reddening of E(B-V)=0.16 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #16258
T. Sakamoto (AGU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), C. Pagani (U Leicester), D. M. Palmer (LANL), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (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 140512A (trigger #598819) (Pagani, et al., GCN Circ. 16249). The BAT ground-calculated position is RA, Dec = 289.366, -15.087 deg which is
```
    RA(J2000)  =  19h 17m 27.9s
    Dec(J2000) = -15d 05' 14.8"
```
with an uncertainty of 1.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 35%.
The mask-weighted light curve shows a complex structure. The first group of multiple peaks begins at ~T-15 sec, reaches maximum at T+0 sec, and returns to background by ~T+40 sec. Then a second longer, brighter group of multiple peaks begins at ~T+85 sec, reaches maximum at T+120 sec and falls to background by T+170 sec. T90 (15-350 keV) is 154.8 +- 4.88 sec (estimated error including systematics).
The time-averaged spectrum from T-22.84 to T+186.29 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.45 +- 0.04. The fluence in the 15-150 keV band is 1.4 +- 0.03 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from T+121.96 sec in the 15-150 keV band is 6.8 +- 0.3 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/598819/BA/
GCN Circular #16261
L. P. Xin, X. F. Wang, J. Y. Wei, Y. L. Qiu, J. S. Deng, J. Wang, X. H. Han and C. Wu on behalf of EAFON report:
We began to observe GRB 140512A (Pagani et al., GCN 16429) with Xinglong 0.8-m TNT telescope at 19:33:54 (UT) , 126 sec after the burst.
The optical counterpart (Pagani et al., GCN 16429) was clearly detected in our white and R band images. A preliminary analysis shows that the brightness of the OT was fading from 13.0 mag to 17.0 mag, calibrated by nearby USNO B1.0 R2mag, during our observation epoch, with an index of 1.54 after fitting by a single power law.
The message may be cited.
GCN Circular #16262
Matthew Stanbro (UAH) reports on behalf of the Fermi GBM Team:
"At 19:31:42.50 UT on 12 May 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140512A (trigger 421615905 / 140512814) which was also detected by Swift (C. Pagani et al. 2014, GCN 16249). The GBM on-ground location, using the Fermi GBM trigger data, is consistent with the Swift/BAT location.
The GBM light curve shows a complex structure, consisting of two main separated episodes with a total duration (T90) of about 148.0 s (50-300 keV). The time-averaged spectrum from T0-10.240 s to T0+152.578 s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -1.33 +/- 0.03 and the cutoff energy, parameterized as Epeak, is 588 +/- 84 keV.
The event fluence (10-1000 keV) in this time interval is (4.30 +/- 0.10)E-05 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+128.70 s in the 10-1000 keV band is 11.0 +/- 0.3 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."

GCN Circular #16263
B. Porterfield (PSU) and C. Pagani (U Leicester) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140512A 106 s after the BAT trigger (Pagani et al., GCN Circ. 16249). We can confirm the detection of a fading source with the UVOT position

  RA(J2000)  =	19:17:28.78 = 289.36991
  DEC(J2000) = -15:05:39.2  = -15.09423

Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the finding chart (FC) exposures and subsequent exposures are:

Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white (fc)         106          256          293       14.91 +/- 0.07
white              106         1022          186       16.99 +/- 0.07
white             1175         6197          412       19.07 +/- 0.08
v                   88         1072           68       15.97 +/- 0.09
v                 4973         6608          393       18.68 +/- 0.15
b                  574         1344           76       16.84 +/- 0.08
b                 5793         5992          196       19.56 +/- 0.19
u (fc)             319          568          491       15.37 +/- 0.07
u                 5587         7102          275       19.08 +/- 0.18
uvw1               697         1295           58       17.52 +/- 0.19
uvw1              5383         7018          393       20.10 +/- 0.34
uvm2               672         1270           77      >18.71
uvm2              5177         6812          393      >20.17
uvw2               624         1220           77      >19.05
uvw2              4769         6403          393      >20.47

The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.162 in the direction of the burst (Schlegel et al. 1998).

GCN Circular #16265
S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A.Lyssenko, and T. Cline on behalf of the Konus-Wind team, report:
A long-duration GRB 140512A (Swift-BAT trigger 598819: Pagani et al., GCN 16249; Sakamoto et al., GCN 16258; Fermi-GBM detection: Stanbro, GCN 16262) triggered Konus-Wind at T0=70310.769 s UT (19:31:50.769).
The light curve shows two separated multipeaked episodes: the first from ~T0-21 s to ~T0+12 s and the second longer and brighter from ~T0+88 s to ~T0+158 s. A total duration of the burst is ~179 s.
As observed by Konus-Wind, the burst had a fluence of 4.8(-0.8,+2.0)x10^-5 erg/cm2, and a 256-ms peak flux, measured from T0+121.856 s, of 3.7(-1.2,+1.3)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range).
The time-averaged spectrum of the first bursting episode (measured from T0 to T0+8.448 s) is best fit in the 20 keV - 1.2 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = -0.85 (-0.47,+0.61) and Ep = 279 (-69,+148) keV (chi2 = 62/60 dof). Fitting by a GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -2.1 (chi2 = 62/59 dof).
The time-averaged spectrum of the second bursting episode (measured from T0+90.368 to T0+155.904 s) is best fit in the 20 keV - 6 MeV range by a power law with exponential cutoff model with the following parameters: alpha = -1.30 (-0.18,+0.21) and Ep = 466 (-124, +287) keV (chi2 = 79/79 dof). Fitting by a GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -1.9 (chi2 = 78/78 dof).
The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB140512_T70310/
All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.
GCN Circular #16307
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, D.Denisenko, A.Sankovich Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka
Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Tunka began observations of GRB140512A (Pagani et. al. GCN 16249) from pointing on several FERMI alerts. During the second set of observations by FERMI coordinates the GRB140512A error box was covered by our very wide field cameras MASTER VWF (FOV=2x384 square degrees, D=72mm, f/1.2, 1 pix = 22 arcsec) which installed on MASTER-II telescope. So we have 5 images with 5 second exptime without time gap since 2014-05-12 19:32:38 i.e. 29 sec. after the trigger and 49 sec. after the burst. We did not see optical transient (Pagani et. al. GCN 16249) at GRB140512A place. The 5-sigma upper limit on coadd of 5 MASTER-VWF images since 49 sec. till 74 sec. after the burst has been about 12.3 mag. The prompt images available here http://master.sai.msu.ru/static/GRB/GRB140512A.png .
After several repointing by FERMI alerts MASTER II was pointed to the GRB140512A 171 sec after trigger time at 2014-05-12 19:34:40.212 UT in two polarizations by Swift coordinates. We definitely see OT on our images in both polarizations.
Out final light curve is available in Tab. 1
```
        Start time       Exptime T-T_mid     P/      eP/      P\    eP\
2014-05-12T19:34:40.212     30     186    14,45    0,04    14,37  0,03
2014-05-12T19:36:37.643     60     318    14,72    0,05    14,74  0,04
2014-05-12T19:38:24.484     60     425    15,60    0,12    15,35  0,06
2014-05-12T19:39:47.447     60     508    15,41    0,10    15,65  0,07
2014-05-12T19:41:10.651     60     591    15,75    0,13    15,75  0,08
2014-05-12T19:42:32.663     60     673    15,98    0,16    15,94  0,09
2014-05-12T19:43:54.083     60     754    16,46    0,22    16,42  0,12
2014-05-12T19:45:56.002    170     931    16,37    0,20    16,79  0,15
2014-05-12T19:50:30.564    180    1211    17,50    0,39    16,84  0,15
2014-05-12T19:56:11.667    180    1552    16,82    0,27    17,57  0,22
```
P/ and P\ is a polarization filter which are oriented at an angle 45 and 135 degrees to RA axis respectivel. eP/ and eP\ is a error of P/ and P\ values. T is a GRB trigger time.
The dimensionless Stokes parameter averaged over 5 first expositions is estimated to be less than observational error which equals to 2.9% (i.e. q = 0.3 +- 2.9%). So big error is connected to observation in a morning twilight (sun altitude ~ 12 d) and high object zenith distance (z ~ 70 d).
Our unfiltered magnitude is well described by a parity 0.8R + 0.2B (USNO-B1)
The message may be cited.
GCN Circular #16310
A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), J. Gorosabel (IAA-CSIC,UPV-EHU), D. Xu (DARK/NBI), D. Malesani (DARK/NBI), G. Leloudas (DARK/NBI),P. Jakobsson (U. Iceland), T. Kruehler (ESO), A.A. Djupvik (NOT), E. Gafton (OKC, Stockholm Univ.) and T. Libbrecht (Stockholm Univ.) report on behalf of a larger collaboration:
Following the photometric observations of the counterpart of GRB 140512A (Pagani et al. GCN 16249) from the 2.5 m NOT (+ALFOSC) reported by de Ugarte Postigo et al. (GCN 16253) we obtained spectroscopic data. Observations consisted in 2x1800s exposures using Grism #4, which covers the range from 3800 to 9100. The mean observing epoch was May 13, 3:18:50 UT (7.78 hrs after the burst).
The spectrum presents absorption features consistent with FeII and MgII at a common redshift of z=0.725, which we consider the most probable redshift for this event.
1608.08884 from 1 Sep 16
Xiao-Li Huang et al.: Very Bright Prompt and Reverse Shock Emission of GRB 140512A
We report our observations of very bright prompt optical and reverse shock (RS) optical emission of GRB 140512A and analyze its multi-wavelength data observed with the {\em Swift} and {\em Fermi} missions. It is found that the joint optical-X-ray-gamma-ray spectrum with our first optical detection (R=13.09 mag) at $T_0+136$ seconds during the second episode of the prompt gamma-rays can be fit by a single power-law with index $-1.32\pm 0.01$. Our empirical fit to the afterglow lightcurves indicates that the observed bright optical afterglow with R=13.00 mag at the peak time is consistent with predictions of the RS and forward shock (FS) emission of external shock models. Joint optical-X-ray afterglow spectrum is well fit with an absorbed single power-law, with an index evolving with time from $-1.86\pm 0.01$ at the peak time to $-1.57\pm 0.01$ at late epoch, which could be due to the evolution of the ratio of the RS to FS emission fluxes. We fit the lightcurves with standard external models, and derive the physical properties of the outflow. It is found that the ratio $R_B\equiv\epsilon_{\rm B, r}/\epsilon_{\rm B, f}$ is 8187, indicating a high magnetization degree in the RS region. Measuring the relative radiation efficiency with $R_e\equiv\epsilon_{\rm e, r}/\epsilon_{\rm e, f}$, we have $R_e= 0.02$, implying the radiation efficiency of the RS is much lower than that in FS. We also show that the $R_B$ of GRBs 990123, 090102, and 130427A are similar to that of GRB 140512A and their apparent difference may be mainly attributed to the difference of the jet kinetic energy, initial Lorentz factor, and medium density among them.

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Jochen Greiner, last update: 01-Sep-2016 [Disclaimer]