Gamma-ray Burst 120305A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:37:52 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     516997,   Seg_Num: 0
GRB_RA:           47.546d {+03h 10m 11s} (J2000),
                  47.730d {+03h 10m 55s} (current),
                  46.795d {+03h 07m 11s} (1950)
GRB_DEC:         +28.493d {+28d 29' 36"} (J2000),
                 +28.539d {+28d 32' 21"} (current),
                 +28.304d {+28d 18' 15"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3088 [cnts]    Image_Peak=386 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10427     E_range: 50-350 keV
BKG_INTEN:       25016 [cnts]
BKG_TIME:        70640.03 SOD {19:37:20.03} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15991 TJD;    65 DOY;   12/03/05
GRB_TIME:        70649.95 SOD {19:37:29.95} UT
GRB_PHI:         109.55 [deg]
GRB_THETA:        11.34 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     186.56 [sigma]
IMAGE_SIGNIF:    18.18 [sigma]
MERIT_PARAMS:     +1  +0  +0  -4  +3  +5  +0  +0 -38  +0 
SUN_POSTN:       346.78d {+23h 07m 06s}   -5.66d {-05d 39' 44"}
SUN_DIST:         67.83 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.73d {+08h 50m 54s}  +13.08d {+13d 04' 33"}
MOON_DIST:        79.47 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.49,-25.19 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       52.91, 10.36 [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 = 267.03,10.70 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:39:18 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     516997,   Seg_Num: 0
GRB_RA:           47.5354d {+03h 10m 08.49s} (J2000),
                  47.7186d {+03h 10m 52.46s} (current),
                  46.7845d {+03h 07m 08.28s} (1950)
GRB_DEC:         +28.4919d {+28d 29' 30.8"} (J2000),
                 +28.5376d {+28d 32' 15.3"} (current),
                 +28.3026d {+28d 18' 09.3"} (1950)
GRB_ERROR:       5.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.03e-09 [erg/cm2/sec]
GRB_SIGNIF:      5.65 [sigma]
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70713.13 SOD {19:38:33.13} UT,   63.2 [sec] since BAT Trigger Time
TAM[0-3]:        327.65 237.24 261.48 243.63
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       346.78d {+23h 07m 07s}   -5.66d {-05d 39' 43"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.74d {+08h 50m 58s}  +13.07d {+13d 04' 18"}
MOON_DIST:        79.50 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the burst
ECL_COORDS:       52.90, 10.36 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.58 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:39:35 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     516997,   Seg_Num: 0
GRB_RA:           47.5354d {+03h 10m 08.4s} (J2000),
                  47.7186d {+03h 10m 52.4s} (current),
                  46.7845d {+03h 07m 08.2s} (1950)
GRB_DEC:         +28.4919d {+28d 29' 30.8"} (J2000),
                 +28.5376d {+28d 32' 15.3"} (current),
                 +28.3026d {+28d 18' 09.3"} (1950)
GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       32 [cnts]
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70713.13 SOD {19:38:33.13} UT,   63.2 [sec] since BAT Trigger Time
CENTROID_X:      303.65,  raw= 304  [pixels]
CENTROID_Y:      295.94,  raw= 296  [pixels]
ROLL:            249.82 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -4.83
GRB_POS_XRT_Z:   -0.11
IMAGE_URL:       sw00516997000msxps_rw.img
SUN_POSTN:       346.78d {+23h 07m 07s}   -5.66d {-05d 39' 43"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.74d {+08h 50m 58s}  +13.07d {+13d 04' 15"}
MOON_DIST:        79.50 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the burst
ECL_COORDS:       52.90, 10.36 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:39:28 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     516997,   Seg_Num: 0
GRB_RA:           47.5354d {+03h 10m 08.4s} (J2000),
                  47.7186d {+03h 10m 52.4s} (current),
                  46.7845d {+03h 07m 08.2s} (1950)
GRB_DEC:         +28.4919d {+28d 29' 30.8"} (J2000),
                 +28.5376d {+28d 32' 15.3"} (current),
                 +28.3026d {+28d 18' 09.3"} (1950)
GRB_ERROR:       5.4 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       32 [cnts]
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70713.13 SOD {19:38:33.13} UT,   63.2 [sec] since BAT Trigger Time
CENTROID_X:      303.65,  raw= 304  [pixels]
CENTROID_Y:      295.94,  raw= 296  [pixels]
ROLL:            249.82 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -4.83
GRB_POS_XRT_Z:   -0.11
IMAGE_URL:       sw00516997000msxps_rw.img
SUN_POSTN:       346.78d {+23h 07m 07s}   -5.66d {-05d 39' 43"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.74d {+08h 50m 58s}  +13.07d {+13d 04' 16"}
MOON_DIST:        79.50 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the burst
ECL_COORDS:       52.90, 10.36 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:41:22 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     516997,   Seg_Num: 0
GRB_RA:           47.546d {+03h 10m 11s} (J2000),
                  47.730d {+03h 10m 55s} (current),
                  46.795d {+03h 07m 11s} (1950)
GRB_DEC:         +28.493d {+28d 29' 36"} (J2000),
                 +28.539d {+28d 32' 21"} (current),
                 +28.304d {+28d 18' 15"} (1950)
GRB_DATE:        15991 TJD;    65 DOY;   12/03/05
GRB_TIME:        70650.10 SOD {19:37:30.10} UT
TRIGGER_INDEX:   10427
GRB_PHI:         109.55 [deg]
GRB_THETA:        11.34 [deg]
DELTA_TIME:      -46.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     186.56 [sigma]
IMAGE_SIGNIF:    18.18 [sigma]
LC_URL:          sw00516997000msb.lc
SUN_POSTN:       346.78d {+23h 07m 07s}   -5.66d {-05d 39' 41"}
SUN_DIST:         67.83 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.76d {+08h 51m 02s}  +13.07d {+13d 03' 56"}
MOON_DIST:        79.50 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.49,-25.19 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       52.91, 10.36 [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 = 267.03,10.70 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:42:53 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.536d {+03h 10m 09s} (J2000)
POINT_DEC:       +28.491d {+28d 29' 27"} (J2000)
POINT_ROLL:      249.825d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70721.41 SOD {19:38:41.41} UT,   71.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.654
N_STARS:         15
X_OFFSET:        408 [pixels]
Y_OFFSET:        584 [pixels]
X_MAX:           1367 [pixels]
Y_MAX:           1543 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00516997000msufc0071.fits
SUN_POSTN:       346.78d {+23h 07m 07s}   -5.66d {-05d 39' 40"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.77d {+08h 51m 06s}  +13.06d {+13d 03' 40"}
MOON_DIST:        79.53 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:43:41 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.536d {+03h 10m 09s} (J2000)
POINT_DEC:       +28.491d {+28d 29' 27"} (J2000)
POINT_ROLL:      249.825d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70721.41 SOD {19:38:41.41} UT,   71.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.654
N_STARS:         15
X_OFFSET:        408 [pixels]
Y_OFFSET:        584 [pixels]
X_MAX:           1367 [pixels]
Y_MAX:           1543 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00516997000msufc0071.fits
SUN_POSTN:       346.78d {+23h 07m 07s}   -5.66d {-05d 39' 39"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.78d {+08h 51m 07s}  +13.06d {+13d 03' 31"}
MOON_DIST:        79.54 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [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 05 Mar 12 19:44:57 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.536d {+03h 10m 09s} (J2000)
POINT_DEC:       +28.491d {+28d 29' 27"} (J2000)
ROLL:            249.825d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70721.41 SOD {19:38:41.41} UT,   71.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     352669129
X_OFFSET:        792 [pixels]
Y_OFFSET:        886 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       952
Y_GRB_POS:       1046
BINNING_INDEX:   1
IM_URL:          sw00516997000msuni0079.fits
SUN_POSTN:       346.78d {+23h 07m 07s}   -5.66d {-05d 39' 38"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.79d {+08h 51m 10s}  +13.05d {+13d 03' 18"}
MOON_DIST:        79.55 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [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 05 Mar 12 19:45:14 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.536d {+03h 10m 09s} (J2000)
POINT_DEC:       +28.491d {+28d 29' 27"} (J2000)
ROLL:            249.825d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70721.41 SOD {19:38:41.41} UT,   71.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     352669129
X_OFFSET:        792 [pixels]
Y_OFFSET:        886 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       952
Y_GRB_POS:       1046
BINNING_INDEX:   1
IM_URL:          sw00516997000msuni0079.fits
SUN_POSTN:       346.78d {+23h 07m 08s}   -5.66d {-05d 39' 37"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.79d {+08h 51m 11s}  +13.05d {+13d 03' 15"}
MOON_DIST:        79.55 [deg]
MOON_ILLUM:      91 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [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 05 Mar 12 19:49:56 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.535d {+03h 10m 08s} (J2000)
POINT_DEC:       +28.490d {+28d 29' 25"} (J2000)
POINT_ROLL:      249.822d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70934.45 SOD {19:42:14.45} UT,   284.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.576
N_STARS:         9
X_OFFSET:        472 [pixels]
Y_OFFSET:        566 [pixels]
X_MAX:           1431 [pixels]
Y_MAX:           1525 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00516997000msufc0284.fits
SUN_POSTN:       346.78d {+23h 07m 08s}   -5.66d {-05d 39' 33"}
SUN_DIST:         67.81 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.84d {+08h 51m 21s}  +13.04d {+13d 02' 25"}
MOON_DIST:        79.60 [deg]
MOON_ILLUM:      92 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 05 Mar 12 19:50:19 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.535d {+03h 10m 08s} (J2000)
POINT_DEC:       +28.490d {+28d 29' 25"} (J2000)
POINT_ROLL:      249.822d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70934.45 SOD {19:42:14.45} UT,   284.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.576
N_STARS:         9
X_OFFSET:        472 [pixels]
Y_OFFSET:        566 [pixels]
X_MAX:           1431 [pixels]
Y_MAX:           1525 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00516997000msufc0284.fits
SUN_POSTN:       346.78d {+23h 07m 08s}   -5.66d {-05d 39' 32"}
SUN_DIST:         67.81 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.84d {+08h 51m 22s}  +13.04d {+13d 02' 21"}
MOON_DIST:        79.60 [deg]
MOON_ILLUM:      92 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [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 05 Mar 12 19:50:34 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     516997,   Seg_Num: 0
GRB_RA:           47.5367d {+03h 10m 08.80s} (J2000),
                  47.7199d {+03h 10m 52.78s} (current),
                  46.7858d {+03h 07m 08.59s} (1950)
GRB_DEC:         +28.4914d {+28d 29' 29.0"} (J2000),
                 +28.5371d {+28d 32' 13.5"} (current),
                 +28.3021d {+28d 18' 07.5"} (1950)
GRB_ERROR:       2.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70812.00 SOD {19:40:12.00} UT,   162.1 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       346.78d {+23h 07m 08s}   -5.66d {-05d 39' 32"}
SUN_DIST:         67.82 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.84d {+08h 51m 23s}  +13.04d {+13d 02' 18"}
MOON_DIST:        79.60 [deg]
MOON_ILLUM:      92 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the burst
ECL_COORDS:       52.90, 10.36 [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:     Mon 05 Mar 12 19:51:28 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.535d {+03h 10m 08s} (J2000)
POINT_DEC:       +28.490d {+28d 29' 25"} (J2000)
ROLL:            249.822d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70934.45 SOD {19:42:14.45} UT,   284.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     352669342
X_OFFSET:        792 [pixels]
Y_OFFSET:        886 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       952
Y_GRB_POS:       1046
BINNING_INDEX:   1
IM_URL:          sw00516997000msuni0292.fits
SUN_POSTN:       346.79d {+23h 07m 08s}   -5.66d {-05d 39' 31"}
SUN_DIST:         67.81 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.85d {+08h 51m 25s}  +13.04d {+13d 02' 09"}
MOON_DIST:        79.61 [deg]
MOON_ILLUM:      92 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [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 05 Mar 12 19:51:41 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     516997,   Seg_Num: 0
POINT_RA:         47.535d {+03h 10m 08s} (J2000)
POINT_DEC:       +28.490d {+28d 29' 25"} (J2000)
ROLL:            249.822d
IMG_START_DATE:  15991 TJD;    65 DOY;   12/03/05
IMG_START_TIME:  70934.45 SOD {19:42:14.45} UT,   284.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     352669342
X_OFFSET:        792 [pixels]
Y_OFFSET:        886 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       952
Y_GRB_POS:       1046
BINNING_INDEX:   1
IM_URL:          sw00516997000msuni0292.fits
SUN_POSTN:       346.79d {+23h 07m 09s}   -5.66d {-05d 39' 31"}
SUN_DIST:         67.81 [deg]   Sun_angle= -4.1 [hr] (East of Sun)
MOON_POSTN:      132.85d {+08h 51m 25s}  +13.04d {+13d 02' 06"}
MOON_DIST:        79.61 [deg]
MOON_ILLUM:      92 [%]
GAL_COORDS:      156.48,-25.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       52.90, 10.36 [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 #13004
G. Stratta (ASDC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), B. Gendre (ASDC), C. Guidorzi (U Ferrara), S. T. Holland (STScI), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), V. Mangano (INAF-IASFPA), C. B. Markwardt (NASA/GSFC), F. E. Marshall (NASA/GSFC), A. Melandri (INAF-OAB), T. Sakamoto (NASA/UMBC), C. J. Saxton (UCL-MSSL), B. Sbarufatti (INAF-OAB/PSU), C. A. Swenson (PSU), G. Tagliaferri (INAF-OAB), E. Troja (NASA/GSFC/ORAU) and B.-B. Zhang (PSU) report on behalf of the Swift Team:
At 19:37:30 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 120305A (trigger=516997). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 47.546, +28.493 which is
```
   RA(J2000)  =  03h 10m 11s
   Dec(J2000) = +28d 29' 36"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single spike with a duration of about 200 msec. The peak count rate was ~32000 counts/sec (15-350 keV), at ~0 sec after the trigger.
Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source with an enhanced position: RA, Dec 47.5368, 28.4915 which is equivalent to:
```
   RA(J2000)  = 03h 10m 08.84s
   Dec(J2000) = +28d 29' 29.3"
```
with an uncertainty of 2.6 arcseconds (radius, 90% containment). This location is 29 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 in excess of the Galactic value (1.13 x 10^21 cm^-2, Kalberla et al. 2005), with an excess column of 4 (+3.38/-2.63) x 10^21 cm^-2 (90% confidence).
The initial flux in the 2.5 s image was 1.03e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 71 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 0.43.
We note quasi-periodic variability in the BAT lightcurve before and after the burst. We believe it is unrelated to the GRB and could be coming from a different source, but will further examine the data to determine the origin.
Burst Advocate for this burst is G. Stratta (giulia.stratta AT asdc.asi.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 Circular #13005
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, A.Kuznetsov, A.Sankovich 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.Zalozhnich, A. Popov Ural Federal University
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 Kislovodsk was pointed to the short GRB120305A 32 sec after notice time and 57 sec after GRB time at 2012-03-05 19:38:26.385 UT in two polarizations. On our first (10s exposure) set we haven`t found optical transient within SWIFT error-box (ra=03 10 11 dec=+28 29 21 r=0.050000). The 5-sigma upper limit has been about 16.0 mag. The message may be cited.
GCN Circular #13006
F. J. Virgili (Liverpool, JMU), C. Guidorzi (U. Ferrara), A. Melandri (INAF-OAB), C.G. Mundell (Liverpool, JMU) report:
"The 2-m Liverpool Telescope robotically followed up GRB 120305A (SWIFT trigger 516997; Stratta et al., GCN Circ 13004) 14.00 min after the GRB trigger time.
No optical counterpart is detected within the XRT error circle to the following conservative limits:
```
r' > 21.3 mag (vs USNOB1)
i' > 21.0 mag (vs USNOB1).
```
GCN Circular #13007
D. M. Palmer (LANL), 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), T. Sakamoto (GSFC/UMBC), M. Stamatikos (OSU), G. Stratta (ASDC), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-60 to T+243 sec from recent telemetry downlinks, we report further analysis of BAT GRB 120305A (trigger #516997) (Stratta, et al., GCN Circ. 13004). The BAT ground-calculated position is RA, Dec = 47.549, 28.495 deg which is
```
   RA(J2000)  =  03h 10m 11.8s 
   Dec(J2000) = +28d 29' 41.2" 
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 92%.
The mask-weighted light curve shows a single FRED-like spike starting at ~T+0.00 sec, peaking at ~T+0.02 sec, and returning to baseline at ~T+0.20 sec. At the ~2-sigma level, there is possible emission out to ~T+20 sec. T90 (15-350 keV) is 0.10 +- 0.02 sec (estimated error including systematics).
The time-averaged spectrum from T+0.00 to T+0.136 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.00 +- 0.09. The fluence in the 15-150 keV band is 2.0 +- 0.1 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-0.43 sec in the 15-150 keV band is 2.2 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/516997/BA/
GCN Circular #13008
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 448 s of XRT Photon Counting mode data and 1 UVOT images for GRB 120305A, 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 = 47.53639, +28.49191 which is equivalent to:
```
RA (J2000): 03h 10m 8.73s
Dec (J2000): +28d 29' 30.9"
```
with an uncertainty of 2.0 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 #13009
K.L. Page (U. Leicester), C. Pagani (U. Leicester), V. D'Elia (ASDC), A. Maselli (INAF-IASFPA), V. Mangano (INAF-IASFPA), M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), A.P. Beardmore (U. Leicester) and G. Stratta report on behalf of the Swift-XRT team:
We have analysed 8.2 ks of XRT data for GRB 120305A (Stratta et al. GCN Circ. 13004), from 69 s to 24.9 ks after the BAT trigger. The data comprise 85 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 13008).
The light curve can be modelled with a power-law decay with a decay index of alpha=2.66 (+0.22, -0.19).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.94 (+0.21, -0.20). The best-fitting absorption column is 4.7 (+1.1, -0.9) x 10^21 cm^-2, in excess of the Galactic value of 1.1 x 10^21 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.5 x 10^-11 (7.5 x 10^-11) erg cm^-2 count^-1.
```
A summary of the WT-mode spectrum is thus:
Total column:	     4.7 (+1.1, -0.9) x 10^21 cm^-2
Galactic foreground: 1.1 x 10^21 cm^-2
Excess significance: 6.4 sigma
Photon index:	     1.94 (+0.21, -0.20)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00516997.
This circular is an official product of the Swift-XRT team.
GCN Circular #13010
B. A. Zauderer, W. Fong and E. Berger (Harvard) report:
"We observed the location of the short-duration GRB 120305A (GCN 13004) with the EVLA starting on 2012 March 05.98 UT (3.9 hours post-burst). We obtained two hours of observations at a mean frequency of 5.8 GHz. We do not detect any radio source within the latest enhanced XRT position (improved from GCN 13008 with RA = 03:10:08.76, Dec = +28:29:30.2 (J2000), 1.9" uncertainty; http://www.swift.ac.uk/xrt_positions/00516997/) to a 3-sigma limit of ~18 microJy."
GCN Circular #13011
F. E. Marshall (NASA/GSFC) and G. Stratta (ASDC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 120305A 72 s after the BAT trigger (Stratta et al., GCN Circ. 13004). No optical afterglow consistent with the enhanced XRT position (Beardmore et al., GCN Circular 13008) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial finding chart (FC) exposures and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white (FC)          72          221          147         >20.1
u (FC)             284          534          246         >20.4
white               72         6382          363         >21.1
v                 5158        11729         1082         >19.7
b                  540        18740          428         >20.4
u                  284        24898         1918         >21.2
w1                5567        24288         1968         >20.7
m2               11734        23381         1740         >21.0
w2                6388         6584          193         >20.4
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.43 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #13015
J. Norris (BSU), S.D. Barthelmy (GSFC) for the BAT Team:
We report the spectral lag analysis for GRB 120305A (GCN Circ. 13004) based on the BAT data. Using 1-ms binned light curves, the spectral lag for the 15-25 keV to 50-100 keV bands is 2.0 +0.6/-0.9 msec, and -2.6 +0.6/-0.4 msec for the 25-50 keV to 100-350 keV bands for both peaks combined. These lag values place this burst in the short burst category.
GCN Circular #13016
Jan Strobl (1), Martin Jelinek (2), Cyril Polasek (1), Martin Nekola (1), Martin Blazek (1), Petr Kubanek (3) and Rene Hudec (1) (1. ASU AVCR Ondrejov, 2. IAA-CSIC Granada, 3. FZU AVCR)
We observed the field of Swift GRB 120305A (Stratta et al., GCNC 13004) with the 0.5m telescope D50 in Ondrejov (Czech Republic), starting at 19:39:12.6UT i.e. 102.6s after the trigger. A sequence of 20s unfiltered images was obtained. We do not detect any new source in individual (limit Rc~17.5) nor coadded images (limit Rc~19.2).
This message can be cited.
GCN Report 369.1
GCN_Report 369.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_369_1.pdf by G. Stratta at ASDC titled: "Swift report om GRB 120305A"
Redshift z= 0.225 +- 0.001 from host galaxy emission (Halpha, [OIII])
W.-F. Fong et al. 2022, ApJ 940, 56

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