Gamma-ray Burst 101030A

(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:     Sat 30 Oct 10 15:56:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     437408,   Seg_Num: 0
GRB_RA:          166.390d {+11h 05m 34s} (J2000),
                 166.524d {+11h 06m 06s} (current),
                 165.769d {+11h 03m 05s} (1950)
GRB_DEC:         -16.387d {-16d 23' 11"} (J2000),
                 -16.445d {-16d 26' 42"} (current),
                 -16.116d {-16d 06' 58"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4318 [cnts]    Image_Peak=197 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   146     E_range: 25-100 keV
BKG_INTEN:       26647 [cnts]
BKG_TIME:        57377.67 SOD {15:56:17.67} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15499 TJD;   303 DOY;   10/10/30
GRB_TIME:        57389.90 SOD {15:56:29.90} UT
GRB_PHI:         -56.66 [deg]
GRB_THETA:        12.93 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     14.49 [sigma]
IMAGE_SIGNIF:    7.77 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  -2  +0  +0 -68  +0 
SUN_POSTN:       214.77d {+14h 19m 05s}  -13.89d {-13d 53' 15"}
SUN_DIST:         46.53 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.50d {+08h 42m 00s}  +15.16d {+15d 09' 39"}
MOON_DIST:        47.57 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      174.19,-20.40 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
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 = 226.51,12.80 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 15:58:08 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     437408,   Seg_Num: 0
GRB_RA:          166.3800d {+11h 05m 31.19s} (J2000),
                 166.5146d {+11h 06m 03.50s} (current),
                 165.7590d {+11h 03m 02.16s} (1950)
GRB_DEC:         -16.3777d {-16d 22' 39.7"} (J2000),
                 -16.4363d {-16d 26' 10.7"} (current),
                 -16.1075d {-16d 06' 26.9"} (1950)
GRB_ERROR:       5.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       2.81e-09 [erg/cm2/sec]
GRB_SIGNIF:      9.89 [sigma]
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57455.57 SOD {15:57:35.57} UT,   65.7 [sec] since BAT Trigger Time
TAM[0-3]:        327.66 237.22 261.44 243.79
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       214.77d {+14h 19m 06s}  -13.89d {-13d 53' 16"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.51d {+08h 42m 03s}  +15.16d {+15d 09' 24"}
MOON_DIST:        47.55 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.28, 39.47 [deg] galactic lon,lat of the burst
ECL_COORDS:      174.18,-20.40 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.77 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 15:58:18 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     437408,   Seg_Num: 0
GRB_RA:          166.3800d {+11h 05m 31.1s} (J2000),
                 166.5146d {+11h 06m 03.5s} (current),
                 165.7590d {+11h 03m 02.1s} (1950)
GRB_DEC:         -16.3777d {-16d 22' 39.7"} (J2000),
                 -16.4363d {-16d 26' 10.7"} (current),
                 -16.1075d {-16d 06' 26.9"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       98 [cnts]
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57455.57 SOD {15:57:35.57} UT,   65.7 [sec] since BAT Trigger Time
CENTROID_X:      320.59,  raw= 321  [pixels]
CENTROID_Y:      307.73,  raw= 308  [pixels]
ROLL:            93.81 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   22.94
GRB_POS_XRT_Z:   43.12
IMAGE_URL:       sw00437408000msxps_rw.img
SUN_POSTN:       214.77d {+14h 19m 06s}  -13.89d {-13d 53' 16"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.51d {+08h 42m 03s}  +15.16d {+15d 09' 22"}
MOON_DIST:        47.55 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.28, 39.47 [deg] galactic lon,lat of the burst
ECL_COORDS:      174.18,-20.40 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 15:58:25 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     437408,   Seg_Num: 0
GRB_RA:          166.3800d {+11h 05m 31.1s} (J2000),
                 166.5146d {+11h 06m 03.5s} (current),
                 165.7590d {+11h 03m 02.1s} (1950)
GRB_DEC:         -16.3777d {-16d 22' 39.7"} (J2000),
                 -16.4363d {-16d 26' 10.7"} (current),
                 -16.1075d {-16d 06' 26.9"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       98 [cnts]
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57455.57 SOD {15:57:35.57} UT,   65.7 [sec] since BAT Trigger Time
CENTROID_X:      320.59,  raw= 321  [pixels]
CENTROID_Y:      307.73,  raw= 308  [pixels]
ROLL:            93.81 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   22.94
GRB_POS_XRT_Z:   43.12
IMAGE_URL:       sw00437408000msxps_rw.img
SUN_POSTN:       214.77d {+14h 19m 06s}  -13.89d {-13d 53' 16"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.51d {+08h 42m 03s}  +15.16d {+15d 09' 21"}
MOON_DIST:        47.55 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.28, 39.47 [deg] galactic lon,lat of the burst
ECL_COORDS:      174.18,-20.40 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 16:00:28 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     437408,   Seg_Num: 0
GRB_RA:          166.390d {+11h 05m 34s} (J2000),
                 166.524d {+11h 06m 06s} (current),
                 165.769d {+11h 03m 05s} (1950)
GRB_DEC:         -16.387d {-16d 23' 11"} (J2000),
                 -16.445d {-16d 26' 42"} (current),
                 -16.116d {-16d 06' 58"} (1950)
GRB_DATE:        15499 TJD;   303 DOY;   10/10/30
GRB_TIME:        57389.90 SOD {15:56:29.90} UT
TRIGGER_INDEX:   146
GRB_PHI:         -56.66 [deg]
GRB_THETA:        12.93 [deg]
DELTA_TIME:      57.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     14.49 [sigma]
IMAGE_SIGNIF:    7.77 [sigma]
LC_URL:          sw00437408000msb.lc
SUN_POSTN:       214.77d {+14h 19m 06s}  -13.89d {-13d 53' 18"}
SUN_DIST:         46.53 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.53d {+08h 42m 08s}  +15.15d {+15d 08' 57"}
MOON_DIST:        47.54 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      174.19,-20.40 [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 = 226.51,12.80 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 16:01:54 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.392d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 05"} (J2000)
POINT_ROLL:      93.812d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57463.30 SOD {15:57:43.30} UT,   73.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.744
N_STARS:         21
X_OFFSET:        472 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1431 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00437408000msufc0073.fits
SUN_POSTN:       214.78d {+14h 19m 06s}  -13.89d {-13d 53' 19"}
SUN_DIST:         46.53 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.55d {+08h 42m 11s}  +15.14d {+15d 08' 41"}
MOON_DIST:        47.53 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.30, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 16:02:16 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.392d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 05"} (J2000)
POINT_ROLL:      93.812d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57463.30 SOD {15:57:43.30} UT,   73.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.744
N_STARS:         21
X_OFFSET:        472 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1431 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00437408000msufc0073.fits
SUN_POSTN:       214.78d {+14h 19m 06s}  -13.89d {-13d 53' 19"}
SUN_DIST:         46.53 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.55d {+08h 42m 12s}  +15.14d {+15d 08' 36"}
MOON_DIST:        47.53 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.30, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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 30 Oct 10 16:03:22 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.392d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 05"} (J2000)
ROLL:            93.812d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57463.30 SOD {15:57:43.30} UT,   73.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     310147069
X_OFFSET:        707 [pixels]
Y_OFFSET:        874 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       867
Y_GRB_POS:       1034
BINNING_INDEX:   1
IM_URL:          sw00437408000msuni0080.fits
SUN_POSTN:       214.78d {+14h 19m 06s}  -13.89d {-13d 53' 20"}
SUN_DIST:         46.53 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.56d {+08h 42m 15s}  +15.14d {+15d 08' 24"}
MOON_DIST:        47.52 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.30, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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 30 Oct 10 16:03:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.392d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 05"} (J2000)
ROLL:            93.812d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57463.30 SOD {15:57:43.30} UT,   73.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     310147069
X_OFFSET:        707 [pixels]
Y_OFFSET:        874 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       867
Y_GRB_POS:       1034
BINNING_INDEX:   1
IM_URL:          sw00437408000msuni0080.fits
SUN_POSTN:       214.78d {+14h 19m 06s}  -13.89d {-13d 53' 20"}
SUN_DIST:         46.53 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.56d {+08h 42m 15s}  +15.14d {+15d 08' 20"}
MOON_DIST:        47.51 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.30, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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:     Sat 30 Oct 10 16:09:35 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.384d {-16d 23' 03"} (J2000)
POINT_ROLL:      93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57675.31 SOD {16:01:15.31} UT,   285.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.591
N_STARS:         12
X_OFFSET:        387 [pixels]
Y_OFFSET:        554 [pixels]
X_MAX:           1346 [pixels]
Y_MAX:           1513 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00437408000msufc0285.fits
SUN_POSTN:       214.78d {+14h 19m 07s}  -13.89d {-13d 53' 25"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.62d {+08h 42m 29s}  +15.12d {+15d 07' 12"}
MOON_DIST:        47.46 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 16:09:57 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.384d {-16d 23' 03"} (J2000)
POINT_ROLL:      93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57675.31 SOD {16:01:15.31} UT,   285.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.591
N_STARS:         12
X_OFFSET:        387 [pixels]
Y_OFFSET:        554 [pixels]
X_MAX:           1346 [pixels]
Y_MAX:           1513 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00437408000msufc0285.fits
SUN_POSTN:       214.78d {+14h 19m 07s}  -13.89d {-13d 53' 25"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.62d {+08h 42m 30s}  +15.12d {+15d 07' 08"}
MOON_DIST:        47.45 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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 30 Oct 10 16:10:06 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     437408,   Seg_Num: 0
GRB_RA:          166.3824d {+11h 05m 31.77s} (J2000),
                 166.5170d {+11h 06m 04.07s} (current),
                 165.7614d {+11h 03m 02.73s} (1950)
GRB_DEC:         -16.3781d {-16d 22' 41.1"} (J2000),
                 -16.4367d {-16d 26' 12.1"} (current),
                 -16.1079d {-16d 06' 28.3"} (1950)
GRB_ERROR:       2.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57586.00 SOD {15:59:46.00} UT,   196.1 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       214.78d {+14h 19m 07s}  -13.89d {-13d 53' 25"}
SUN_DIST:         46.55 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.62d {+08h 42m 30s}  +15.12d {+15d 07' 06"}
MOON_DIST:        47.44 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.28, 39.47 [deg] galactic lon,lat of the burst
ECL_COORDS:      174.18,-20.40 [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:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 16:10:58 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.384d {-16d 23' 03"} (J2000)
ROLL:            93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57675.31 SOD {16:01:15.31} UT,   285.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     310147281
X_OFFSET:        707 [pixels]
Y_OFFSET:        874 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       867
Y_GRB_POS:       1034
BINNING_INDEX:   1
IM_URL:          sw00437408000msuni0292.fits
SUN_POSTN:       214.78d {+14h 19m 08s}  -13.89d {-13d 53' 26"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.63d {+08h 42m 32s}  +15.12d {+15d 06' 56"}
MOON_DIST:        47.45 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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 30 Oct 10 16:11:19 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.384d {-16d 23' 03"} (J2000)
ROLL:            93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  57675.31 SOD {16:01:15.31} UT,   285.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     310147281
X_OFFSET:        707 [pixels]
Y_OFFSET:        874 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       867
Y_GRB_POS:       1034
BINNING_INDEX:   1
IM_URL:          sw00437408000msuni0292.fits
SUN_POSTN:       214.78d {+14h 19m 08s}  -13.89d {-13d 53' 26"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.64d {+08h 42m 33s}  +15.11d {+15d 06' 52"}
MOON_DIST:        47.44 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #11386
A. Melandri (INAF-OAB), S. D. Barthelmy (GSFC), M. M. Chester (PSU), V. D'Elia (ASDC), J. M. Gelbord (PSU), C. Guidorzi (U Ferrara), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), R. Margutti (INAF-OAB), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester), D. M. Palmer (LANL), M. H. Siegel (PSU) and E. Troja (NASA/GSFC/ORAU) report on behalf of the Swift Team:
At 15:56:29 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 101030A (trigger=437408). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 166.390, -16.387 which is
```
   RA(J2000)  =  11h 05m 34s
   Dec(J2000) = -16d 23' 11"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows that the burst began with a bright peak starting at around -70 sec from the trigger, followed by a second episode starting at T-10 sec and consisting of two overlapping peaks with a duration of about 80 sec. We note that the first peak occurred during a pre-planned slew, so the BAT could not trigger on it; it is also possible that BAT missed emission from the burst before T-100 sec. The peak count rate was ~2000 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 15:57:35.6 UT, 65.7 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source with an enhanced position: RA, Dec 166.3825, -16.3782 which is equivalent to:
```
   RA(J2000)  = 11h 05m 31.80s
   Dec(J2000) = -16d 22' 41.5"
```
with an uncertainty of 2.5 arcseconds (radius, 90% containment). This location is 40 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 4.24 x 10^20 cm^-2 (Kalberla et al. 2005).
The initial flux in the 2.5 s image was 2.81e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 73 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.04.
Burst Advocate for this burst is A. Melandri (andrea.melandri AT brera.inaf.it). 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:     Sat 30 Oct 10 16:17:19 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 04"} (J2000)
POINT_ROLL:      93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  58253.28 SOD {16:10:53.28} UT,   863.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.716
N_STARS:         72
X_OFFSET:        147 [pixels]
Y_OFFSET:        314 [pixels]
X_MAX:           1586 [pixels]
Y_MAX:           1753 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00437408000msufc0863.fits
SUN_POSTN:       214.79d {+14h 19m 09s}  -13.89d {-13d 53' 31"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.69d {+08h 42m 46s}  +15.10d {+15d 05' 43"}
MOON_DIST:        47.39 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 30 Oct 10 16:17:39 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 04"} (J2000)
POINT_ROLL:      93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  58253.28 SOD {16:10:53.28} UT,   863.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.716
N_STARS:         72
X_OFFSET:        147 [pixels]
Y_OFFSET:        314 [pixels]
X_MAX:           1586 [pixels]
Y_MAX:           1753 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00437408000msufc0863.fits
SUN_POSTN:       214.79d {+14h 19m 09s}  -13.89d {-13d 53' 32"}
SUN_DIST:         46.54 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.70d {+08h 42m 47s}  +15.09d {+15d 05' 39"}
MOON_DIST:        47.39 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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 30 Oct 10 16:19:26 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 04"} (J2000)
ROLL:            93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  58253.28 SOD {16:10:53.28} UT,   863.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     310147859
X_OFFSET:        706 [pixels]
Y_OFFSET:        873 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       866
Y_GRB_POS:       1033
BINNING_INDEX:   1
IM_URL:          sw00437408000msuni0870.fits
SUN_POSTN:       214.79d {+14h 19m 09s}  -13.89d {-13d 53' 33"}
SUN_DIST:         46.55 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.71d {+08h 42m 51s}  +15.09d {+15d 05' 18"}
MOON_DIST:        47.37 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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 30 Oct 10 16:19:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     437408,   Seg_Num: 0
POINT_RA:        166.391d {+11h 05m 34s} (J2000)
POINT_DEC:       -16.385d {-16d 23' 04"} (J2000)
ROLL:            93.815d
IMG_START_DATE:  15499 TJD;   303 DOY;   10/10/30
IMG_START_TIME:  58253.28 SOD {16:10:53.28} UT,   863.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     310147859
X_OFFSET:        706 [pixels]
Y_OFFSET:        873 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       866
Y_GRB_POS:       1033
BINNING_INDEX:   1
IM_URL:          sw00437408000msuni0870.fits
SUN_POSTN:       214.79d {+14h 19m 09s}  -13.89d {-13d 53' 33"}
SUN_DIST:         46.55 [deg]   Sun_angle= 3.2 [hr] (West of Sun)
MOON_POSTN:      130.72d {+08h 42m 52s}  +15.09d {+15d 05' 15"}
MOON_DIST:        47.37 [deg]
MOON_ILLUM:      48 [%]
GAL_COORDS:      269.29, 39.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      174.19,-20.40 [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 #11387
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 807 s of XRT Photon Counting mode data and 1 UVOT images for GRB 101030A, 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 = 166.38198, -16.37812 which is equivalent to:
```
RA (J2000): 11h 05m 31.68s
Dec (J2000): -16d 22' 41.2"
```
with an uncertainty of 1.9 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 #11388
S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), A. Melandri (INAF-OAB), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 101030A (trigger #437408) (Melandri, et al., GCN Circ. 11386). The BAT ground-calculated position is RA, Dec = 166.390, -16.389 deg, which is
```
   RA(J2000)  =  11h 05m 33.6s 
   Dec(J2000) = -16d 23' 22.0" 
```
with an uncertainty of 1.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 96%.
The mask-weighted light curve shows the burst already in progress as it came into the BAT FoV at ~T-60 sec during a pre-planned slew. The lightcurve decreases from that time and nearly returns to background levels at ~T-18 sec. Then it begins to rise again, peaking at T+1 sec and ~T+9 sec and returning to background at ~T+70 sec. There is possible emission at the 2-sigma level from T+130 sec to T+170 sec. T90 (15-350 keV) is 92.0 +- 50 sec (estimated error including systematics).
The time-averaged spectrum from T-55.2 to T+47.8 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.82 +- 0.10. The fluence in the 15-150 keV band is 2.0 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+8.78 sec in the 15-150 keV band is 0.9 +- 0.1 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/437408/BA/
GCN Circular #11389
E. A. Hoversten (PSU) and A. Melandri (INAF-OAB) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 101030A 73s after the BAT trigger (Melandi et al., GCN 11386). We do not detect any source at the enhanced Swift XRT position (Evans et al., GCN 11387). UVOT magnitude 3-sigma upper limits are reported in the following table:
```
Filter  T_start  T_stop  Exp(s)  Mag (3-sigma upper limit)
-------------------------------------------------------------
white(fc)  73      223    146      > 20.32
white      73     1008    327      > 20.75
v         617      808     38      > 17.89
b         542      735     38      > 18.83
u         285      710    260      > 19.68
uvw1      666      857     38      > 18.39
uvm2      641      833     38      > 18.18
uvw2      592      784     38      > 18.61
```
The quoted upper limits have not been corrected for the expected Galactic extinction along the line of sight of E_(B-V) = 0.04 (Schlegel et al. 1998). All photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).
GCN Circular #11390
A. Melandri, R. Margutti and B. Sbarufatti (INAF-OAB) report on behalf of the Swift-XRT team:
We have analysed 7.4 ks of XRT data for GRB 101030A (Melandri et al. GCN Circ. 11386), from 71 s to 19.2 ks after the BAT trigger. The data comprise 118 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN. Circ 11387).
The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=2.32 (+0.26, -0.33). At T+112 s the decay steepens to an alpha of 3.97 (+0.24, -0.22). The light curve breaks again at T+478 s to a decay with alpha=-0.08 (+0.18, -1.43), before a final break at T+5105 s after which the decay index is 1.12 (+0.22, -0.21).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.87 (+0.15, -0.13). The best-fitting absorption column is 1.83 (+0.26, -0.24) x 10^21 cm^-2, in excess of the Galactic value of 4.2 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 2.11 (+0.12, -0.20) and a best-fitting absorption column of 8.1 (+2.7, -3.9) x 10^20 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.6 x 10^-11 (4.6 x 10^-11) erg cm^-2 count^-1.
If the light curve continues to decay with a power-law decay index of 1.12, the count rate at T+24 hours will be 4.7 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.7 x 10^-13 (2.2 x 10^-13) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00437408.
This circular is an official product of the Swift-XRT team.
GCN Circular #11391
T. Kruehler, P. Schady, and J. Greiner (all MPE Garching) report on behalf of the GROND team:
GROND (Greiner et al. 2008, PASP 120, 405), mounted at the 2.2m MPG/ESO telescope at LaSilla Observatory (Chile), performed automated follow-up observations of GRB 101030A (Melandri et al., GCN #11386) as soon as the field rose above the pointing constraints of the telescope. Imaging was performed simultaneously in g'r'i'z'JHK starting at 08:12 UT on 2010-10-31, which is 16.3 h after the burst. Inside the enhanced XRT error circle (Evans et al., GCN# 11387), GROND detects a single object at:
```
RA (J2000)= 11:05:31.68
Dec (J2000)= -16:22:41.1
```
with uncertainties of 0.3" in each coordinate.
Preliminary AB magnitudes and upper limits in stacked images of 15 min integration time in each g'r'i'z' and 20 min in JHK at a midtime of 08:46 UT are:
```
g' = 22.9 +- 0.3
r' = 22.4 +- 0.1
i' = 22.0 +- 0.1
z' = 22.1 +- 0.2
J = 21.7 +- 0.4
H > 21.2
K > 20.5
```
which have been tied to SDSS and 2MASS field stars. No statement about variability can be made at this point. No source is reported at this location in the SDSS, which is somewhat deeper than the object's magnitudes, and hence we suggest this source is the optical/NIR afterglow of GRB101030A.
We thank the ESO staff at LaSilla observatory, and in particular P. Arias, for their excellent support and assistance with the observations.
GCN Circular #11392
D. Suzuki, K. Omori, S. Kobara, H. Naito and T. Sako (STE Lab, Nagoya Univ.) on behalf of the MOA Collaboration report:
We searched for an optical afterglow of GRB101030A (GCN 11386, Melandri et al.) starting from 15:59:39 UT on 2010 Oct. 30th with the MOA-II 1.8m telescope at Mt.John observatory in New Zealand. The images were taken with a wideband Red filter (center wavelength ~ 750nm and FWHM ~ 250nm), and we found a new source within the error circle of the Swift XRT source position (GCN 11387). The estimated magnitudes are the followings.
```
t-t0(sec) Imag err exp.
-------------------------
190  20.0  2.3  300
610  19.5  4.0  100
-------------------------
```
Large errors in the magnitude estimation are due to the observations during dawn and under the moon light. Consequently, relatively small number of field stars affects in the large errors. These magnitudes were calibrated against the USNO-B1.0 catalog stars, and not corrected for the Galactic extinction.
GCN Report 306.1
GCN_Report 306.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_306_1.pdf by A. Melandri at INAF-OAB titled: "Final report on Swift Observations of GRB 101030A"

GCN Circular #11435
GRB 101030A, the review of the sky area in plate archives V.V. Golovnya, L.K. Pakuliak (Main Astro Obs, Kyiv) report:
We have undertaken the review of the sky area of GRB 101030A (Evans et al., GCN 11387) on astronegatives, collected in Ukrainian NAS Main astronomical observatory plate archive (1976-1996). All the plates with=20 the possible object appearance are digitized using Microtek ScanMaker 9800XL TMA flatbed scanner and have been placed into Golosiiv Plate=20 Archive database DBGPA with open access to them.

The list of plates is given in the table:
YYYYMMDD   UT       Plates/Films  Exp.  LimMag          
19860501  19:23:22  GUA040C002903 30.0  12.25
19860501  19:23:27  GUA040D002904 11.9  13.15
19860503  00:29:45  QUI021B000206 10.1  12.15
19860503  00:48:10  QUI021B000208 10.1  12.15

Plates/Films: 
GUA040C =96the plates archive identifier of DWA (D/F=400/2000,M=103"/mm)
GUA040D   of the Ukrainian NAS Main astronomical observatory in Kyiv
          (Marsden's number - 83) the plate number [1].
QUI021B -the films archive identifier of AFU-75 (D/F=210/740,M=280"/mm)
          of the Quito Astro. Obs. in Ecuador
         (Marsden's number - 781) the plate number [1].
Exp.  -   Duration of the maximum exposures (minutes).
LimMag -  Limited mag, derived in the 50 minutes area around the
          location given in Evans et al., GCN 11387:
          RA (J2000): 11h 05m 31.68s, Dec (J2000): -16d 22' 41.2".

The preview images of 4 areas together with the 8 min.of arc area from SkyMap can be found in http://gua.db.ukr-vo.org/img/grb/101030A/index. The images with full resolution are available via e-mail on demand.
References: 1.L.Pakuliak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org/

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Jochen Greiner, last update: 22-Apr-2024 [Disclaimer]