Gamma-ray Burst 080319

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 05:46:44 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     306754,   Seg_Num: 0
GRB_RA:          206.354d {+13h 45m 25s} (J2000),
                 206.440d {+13h 45m 45s} (current),
                 205.833d {+13h 43m 20s} (1950)
GRB_DEC:         +44.079d {+44d 04' 44"} (J2000),
                 +44.038d {+44d 02' 17"} (current),
                 +44.329d {+44d 19' 44"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       46651 [cnts]    Image_Peak=395 [image_cnts]
TRIGGER_DUR:     12.160 [sec]
TRIGGER_INDEX:   491     E_range: 25-100 keV
BKG_INTEN:       217347 [cnts]
BKG_TIME:        20645.34 SOD {05:44:05.34} UT
BKG_DUR:         64 [sec]
GRB_DATE:        14544 TJD;    79 DOY;   08/03/19
GRB_TIME:        20742.05 SOD {05:45:42.05} UT
GRB_PHI:          14.94 [deg]
GRB_THETA:        52.84 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.96 [sigma]
IMAGE_SIGNIF:    7.23 [sigma]
MERIT_PARAMS:     +1  +0  +0  +4  +2  +6  +0  +0 +64  +1
SUN_POSTN:       359.08d {+23h 56m 20s}   -0.40d {-00d 23' 53"}
SUN_DIST:        130.04 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.09d {+10h 04m 21s}  +11.60d {+11d 36' 16"}
MOON_DIST:        57.30 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.87 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      181.41, 49.92 [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 = 184.26,0.91 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 05:49:25 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     306754,   Seg_Num: 0
GRB_RA:          206.354d {+13h 45m 25s} (J2000),
                 206.440d {+13h 45m 45s} (current),
                 205.833d {+13h 43m 20s} (1950)
GRB_DEC:         +44.079d {+44d 04' 44"} (J2000),
                 +44.038d {+44d 02' 17"} (current),
                 +44.329d {+44d 19' 44"} (1950)
GRB_DATE:        14544 TJD;    79 DOY;   08/03/19
GRB_TIME:        20742.05 SOD {05:45:42.05} UT
TRIGGER_INDEX:   491
GRB_PHI:          14.94 [deg]
GRB_THETA:        52.84 [deg]
DELTA_TIME:      -69.00 [sec]
TRIGGER_DUR:     12.160 [sec]
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.96 [sigma]
IMAGE_SIGNIF:    7.23 [sigma]
LC_URL:          sw00306754000msb.lc
SUN_POSTN:       359.08d {+23h 56m 20s}   -0.40d {-00d 23' 50"}
SUN_DIST:        130.04 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.11d {+10h 04m 27s}  +11.59d {+11d 35' 38"}
MOON_DIST:        57.30 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.87 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      181.41, 49.92 [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 = 184.26,0.91 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 05:55:57 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.350d {+13h 45m 24s} (J2000)
POINT_DEC:       +44.068d {+44d 04' 04"} (J2000)
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21299.42 SOD {05:54:59.42} UT,   557.4 [sec] since BAT Trigger Time
COUNTS:          2    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        1    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.
COMMENTS:        No source found in the image.

LI> GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 06:10:14 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
ROLL:            36.765d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21723.27 SOD {06:02:03.27} UT,   981.2 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     227599325
X_OFFSET:        860 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1020
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00306754000msuni0981.fits
SUN_POSTN:       359.10d {+23h 56m 23s}   -0.39d {-00d 23' 29"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.28d {+10h 05m 08s}  +11.51d {+11d 30' 43"}
MOON_DIST:        57.23 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [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).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 06:09:38 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
POINT_ROLL:      36.765d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21723.27 SOD {06:02:03.27} UT,   981.2 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.095
N_STARS:         81
X_OFFSET:        541 [pixels]
Y_OFFSET:        503 [pixels]
X_MAX:           1500 [pixels]
Y_MAX:           1462 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00306754000msufc0981.fits
SUN_POSTN:       359.10d {+23h 56m 23s}   -0.39d {-00d 23' 30"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.28d {+10h 05m 07s}  +11.51d {+11d 30' 51"}
MOON_DIST:        57.23 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [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:     Wed 19 Mar 08 06:09:06 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
POINT_ROLL:      36.765d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21723.27 SOD {06:02:03.27} UT,   981.2 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.095
N_STARS:         81
X_OFFSET:        541 [pixels]
Y_OFFSET:        503 [pixels]
X_MAX:           1500 [pixels]
Y_MAX:           1462 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00306754000msufc0981.fits
SUN_POSTN:       359.10d {+23h 56m 23s}   -0.39d {-00d 23' 30"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.27d {+10h 05m 06s}  +11.52d {+11d 30' 59"}
MOON_DIST:        57.23 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 06:04:58 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     306754,   Seg_Num: 0
GRB_RA:          206.3333d {+13h 45m 19.9s} (J2000),
                 206.4189d {+13h 45m 40.5s} (current),
                 205.8118d {+13h 43m 14.8s} (1950)
GRB_DEC:         +44.0802d {+44d 04' 48.7"} (J2000),
                 +44.0392d {+44d 02' 21.2"} (current),
                 +44.3303d {+44d 19' 48.9"} (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:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21309.00 SOD {05:55:09.00} UT,   567.0 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       359.09d {+23h 56m 22s}   -0.39d {-00d 23' 34"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.24d {+10h 04m 58s}  +11.53d {+11d 31' 57"}
MOON_DIST:        57.24 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.82, 69.88 [deg] galactic lon,lat of the burst
ECL_COORDS:      181.39, 49.91 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
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

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 06:03:48 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
ROLL:            36.764d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21617.27 SOD {06:00:17.27} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     227599219
X_OFFSET:        860 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1020
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00306754000msuni0875.fits
SUN_POSTN:       359.09d {+23h 56m 22s}   -0.39d {-00d 23' 36"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.23d {+10h 04m 55s}  +11.54d {+11d 32' 14"}
MOON_DIST:        57.25 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [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:     Wed 19 Mar 08 06:03:08 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
POINT_ROLL:      36.764d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21617.27 SOD {06:00:17.27} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.178
N_STARS:         81
X_OFFSET:        541 [pixels]
Y_OFFSET:        503 [pixels]
X_MAX:           1500 [pixels]
Y_MAX:           1462 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00306754000msufc0875.fits
SUN_POSTN:       359.09d {+23h 56m 22s}   -0.39d {-00d 23' 36"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.22d {+10h 04m 54s}  +11.54d {+11d 32' 23"}
MOON_DIST:        57.25 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [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:     Wed 19 Mar 08 06:04:18 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
ROLL:            36.764d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21617.27 SOD {06:00:17.27} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     227599219
X_OFFSET:        860 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1020
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00306754000msuni0875.fits
SUN_POSTN:       359.09d {+23h 56m 22s}   -0.39d {-00d 23' 35"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.23d {+10h 04m 56s}  +11.54d {+11d 32' 07"}
MOON_DIST:        57.24 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 05:59:35 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.350d {+13h 45m 24s} (J2000)
POINT_DEC:       +44.068d {+44d 04' 04"} (J2000)
ROLL:            36.767d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21304.31 SOD {05:55:04.31} UT,   562.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     227598906
X_OFFSET:        860 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1020
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00306754000msuni0562.fits
SUN_POSTN:       359.09d {+23h 56m 21s}   -0.39d {-00d 23' 40"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.20d {+10h 04m 47s}  +11.55d {+11d 33' 14"}
MOON_DIST:        57.26 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.77, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.42, 49.90 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 05:57:48 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.350d {+13h 45m 24s} (J2000)
POINT_DEC:       +44.068d {+44d 04' 04"} (J2000)
POINT_ROLL:      36.767d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21304.31 SOD {05:55:04.31} UT,   562.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.136
N_STARS:         82
X_OFFSET:        541 [pixels]
Y_OFFSET:        503 [pixels]
X_MAX:           1500 [pixels]
Y_MAX:           1462 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00306754000msufc0562.fits
SUN_POSTN:       359.09d {+23h 56m 21s}   -0.40d {-00d 23' 42"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.18d {+10h 04m 43s}  +11.56d {+11d 33' 39"}
MOON_DIST:        57.26 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.77, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.42, 49.90 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 05:59:08 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.350d {+13h 45m 24s} (J2000)
POINT_DEC:       +44.068d {+44d 04' 04"} (J2000)
ROLL:            36.767d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21304.31 SOD {05:55:04.31} UT,   562.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     227598906
X_OFFSET:        860 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1020
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00306754000msuni0562.fits
SUN_POSTN:       359.09d {+23h 56m 21s}   -0.39d {-00d 23' 40"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.19d {+10h 04m 46s}  +11.56d {+11d 33' 20"}
MOON_DIST:        57.26 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.77, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.42, 49.90 [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:     Wed 19 Mar 08 05:58:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.350d {+13h 45m 24s} (J2000)
POINT_DEC:       +44.068d {+44d 04' 04"} (J2000)
POINT_ROLL:      36.767d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21304.31 SOD {05:55:04.31} UT,   562.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.136
N_STARS:         82
X_OFFSET:        541 [pixels]
Y_OFFSET:        503 [pixels]
X_MAX:           1500 [pixels]
Y_MAX:           1462 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00306754000msufc0562.fits
SUN_POSTN:       359.09d {+23h 56m 21s}   -0.39d {-00d 23' 41"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.19d {+10h 04m 45s}  +11.56d {+11d 33' 30"}
MOON_DIST:        57.26 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.77, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.42, 49.90 [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:     Wed 19 Mar 08 06:02:39 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
POINT_ROLL:      36.764d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21617.27 SOD {06:00:17.27} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.178
N_STARS:         81
X_OFFSET:        541 [pixels]
Y_OFFSET:        503 [pixels]
X_MAX:           1500 [pixels]
Y_MAX:           1462 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00306754000msufc0875.fits
SUN_POSTN:       359.09d {+23h 56m 22s}   -0.39d {-00d 23' 37"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.22d {+10h 04m 53s}  +11.54d {+11d 32' 30"}
MOON_DIST:        57.25 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 19 Mar 08 06:10:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     306754,   Seg_Num: 0
POINT_RA:        206.347d {+13h 45m 23s} (J2000)
POINT_DEC:       +44.069d {+44d 04' 07"} (J2000)
ROLL:            36.765d
IMG_START_DATE:  14544 TJD;    79 DOY;   08/03/19
IMG_START_TIME:  21723.27 SOD {06:02:03.27} UT,   981.2 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     227599325
X_OFFSET:        860 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1020
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00306754000msuni0981.fits
SUN_POSTN:       359.10d {+23h 56m 23s}   -0.39d {-00d 23' 29"}
SUN_DIST:        130.05 [deg]   Sun_angle= 10.2 [hr] (West of Sun)
MOON_POSTN:      151.29d {+10h 05m 09s}  +11.51d {+11d 30' 35"}
MOON_DIST:        57.23 [deg]
MOON_ILLUM:      93 [%]
GAL_COORDS:       93.78, 69.88 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      181.41, 49.90 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_sources_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #7426
C. Pagani (PSU), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD), D. M. Palmer (LANL), J. L. Racusin (PSU) and M. Stamatikos (NASA/ORAU) report on behalf of the Swift Team:
At 05:45:42 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080319A (trigger=306754). The Swift slew to the burst was delayed because of an earth constraint. The BAT on-board calculated location is RA, Dec 206.354, +44.079 which is
```
   RA(J2000) = 13h 45m 25s
   Dec(J2000) = +44d 04' 44"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multiple peaks with a duration of about 40 sec. The peak count rate was ~800 counts/sec (15-350 keV), at ~10 sec after the trigger.
The XRT began observing the field at 05:54:59.4 UT, 557.4 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source with an enhanced position: RA, Dec 206.33306, 44.08029 which is equivalent to:
```
   RA(J2000)  = 13h 45m 19.94s
   Dec(J2000) = +44d 04' 49.1"
```
with an uncertainty of 2.6 arcseconds (radius, 90% containment). This location is 54 arcseconds from the BAT onboard position, within the BAT error circle.
A power-law fit to a spectrum formed from promptly downlinked event data does not constrain the column density, so we cannot provide limits on the redshift using spectroscopy and the relation from Grupe et al. (2007). A summary of the promptly downlinked data is given at http://www.swift.ac.uk/sper/306754/.
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 562 seconds after the BAT trigger. A possible low-significance afterglow candidate has been found at the XRT position in the initial data products. The magnitude is white = 21.7 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.01.
Burst Advocate for this burst is C. Pagani (pagani AT astro.psu.edu). 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 #7429
S. B. Cenko reports on behalf of a larger collaboration:
We have imaged the field of GRB080319A (Pagani et al., GCN 7426) with the automated Palomar 60-inch telescope beginning approximately 2.5 minutes after the burst. Inside the XRT error circle (and consistent with the UVOT candidate) we find a single faint, fading point source at coordinates (J2000.0):
```
        RA: 13:45:20.01
        Dec: +44:04:48.6
```
with an estimated uncertainty of ~ 0.3". Using the USNO-B catalog as a reference, we measure a magnitude of R ~ 20.25 +/- 0.2 in our initial R-band image.
Further observations are planned.
GCN Circular #7436
D. Malesani, J. P. U. Fynbo, P. M. Vreeswijk (DARK), C. Villforth (NOT), report on behalf of a larger collaboration:
We observed the field of GRB 080319A (Pagani et al., GCN 7426) with the Nordic Optical Telescope, starting on 2008 March 19.265 UT. Exposures in the R and I bands were secured.
We detect the afterglow reported by Cenko (GCN 7429). Compared to the USNO-B1 star 1340-0249427 at RA = 13:45:26.457, Dec = +44:04:45.56 (R1 = 15.79), we measure R = 21.03 +- 0.09 on Mar 19.27088 UT (44.4 min after the GRB).
A finding chart is posted at:
http://www.astro.ku.dk/~malesani/GRB/080319A/080319A_finder.jpg
We acknowledge excellent support from the NOT observing staff.
GCN Circular #7440
S. Covino, P. D'Avanzo, D. Fugazza, L.A. Antonelli, L. Calzoletti, S. Campana, G. Chincarini, M.L. Conciatore, S. Cutini, V. D'Elia, F. D'Alessio, F. Fiore, P. Goldoni, D. Guetta, C. Guidorzi, G.L. Israel, E. Maiorano, N. Masetti, A. Melandri, E. Meurs, L. Nicastro, E. Palazzi, E. Pian, S. Piranomonte, L. Stella, G. Stratta, G. Tagliaferri, G. Tosti, V.Testa, S.D. Vergani, F. Vitali report on behalf of the REM team:
The robotic 60-cm REM telescope located at La Silla (Chile) observed automatically the field of the GRB 080319A (GCN 7426, Pagani et al.) about 40 seconds after the burst.
We do no detect any source at the position of the optical afterglow identified by Malesani et al. (GCN 7436) with a 3sigma upper limit of H~15.0 in the first coadded frame at about 100sec after the burst.
GCN Circular #7447
S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), K. McLean (GSFC/UMD), C. Pagani (PSU), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-120 to T+182 sec from recent telemetry downlinks, we report further analysis of BAT GRB 080319A (trigger #306754) (Pagani, et al., GCN Circ. 7426). The BAT ground-calculated position is RA, Dec = 206.352, 44.080 deg, which is
```
   RA(J2000)  =  13h 45m 24.6s 
   Dec(J2000) = +44d 04' 47.3" 
```
with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 7%.
The mask-weighted light curve shows two main over-lapping FRED-like peaks starting at ~T-5 sec, peaking at T+5 and T+25 sec, and ending at ~T+70 sec. T90 (15-350 keV) is 64 +- 36 sec (estimated error including systematics).
The time-averaged spectrum from T-7.7 to T+72.3 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.60 +- 0.13. The fluence in the 15-150 keV band is 4.8 +- 0.4 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+31.80 sec in the 15-150 keV band is 1.2 +- 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/306754/BA/
Due to a large backlog in downlinking the full data on this burst, we currently do not have the usual data set out to long times yet. Should the remaining data show that there is ongoing activity for this burst past the data cutoff at T+182sec, then we will issue an updated 'refined analysis' circular.
GCN Circular #7448
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 596 s of overlapping XRT Photon Counting mode and UVOT data for GRB 080319A, 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 = 206.33318, +44.08038 which is equivalent to:
```
RA (J2000): 13h 45m 19.96s
Dec (J2000): +44d 04' 49.4"
```
with an uncertainty of 1.8 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 http://www.swift.ac.uk/xrt_positions/Goad.pdf).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #7450
V. Beckmann (ISDC), S. Mereghetti (INAF/IASF-Milano), A. von Kienlin (MPE), M. Beck, V. Savchenko (ISDC), J. Borkowski (CAMK/Torun), D. Gotz (CEA/Saclay) report on behalf of the INTEGRAL SPI-ACS GRB team:
The three GRB reported on 2008-03-19 by the Swift team (GCN 7426, 7427, 7442) have been independently detected by the SPI Anti-Coincidence System (ACS) on-board INTEGRAL.
```
Burst         T0     duration    max counts in 50 msec
------------------------------------------------------
GRB080319A  05:45:41    10s        370
GRB080319B  06:12:47    57s       5500
GRB080319C  12:25:55    25s       1200
```
The SPI-ACS light curves are available (both as images and data files) at http://isdc.unige.ch/Soft/ibas/ibas_acs_web.cgi
The light curves, binned at 50 ms, are derived from 91 independent detectors with different lower energy thresholds (mainly between 50 keV and 150 keV) and an upper threshold at about 100 MeV. The ACS response varies as a function of the GRB incident angle. For these reasons we caution that the count rates cannot be easily translated into physical flux units.
GCN Circular #7463
C. Pagani and J. L. Racusin (PSU) report on behalf of the Swift-XRT team:
The Swift-XRT started observing GRB 080319A (trigger=306754, Pagani et al. GCN 7426) at 05:54:59.4 UT, 557.4s after the trigger. The Swift slew to the burst was delayed because of an Earth constraint and XRT observations were interrupted by the Swift trigger on GRB 080319B. The current observations consist of Photon Counting mode data from T+560s to T+1632s and from T+35ks to T+37ks.
The best XRT position is the UVOT-enhanced position from Beardmore et al. (GCN 7448), consistent with the optical afterglow position reported by Cenko (GCN 7429).
The 0.3-10 keV X-ray light curve starts at a count rate of ~1 counts/s and shows a decline with a decay slope of 0.94 +/- 0.05.
The spectrum of the PC data from T+560s to T+1632s can be well fit by an absorbed powerlaw with photon index 2.1 +/- 0.3 and column density of (1.0 +/- 0.7)e21 cm^-2, in excess of the Galactic column density of 1.45e20 cm^-2 in this direction. The average observed 0.3-10keV flux is 1.6e-11 erg cm^-2 s^-1, which corresponds to an unabsorbed flux of 2.1e-11 erg cm^-2 s^-1. The counts to observed flux conversion factor at the time of this spectrum is 3.7e-11 erg cm^-2 count^-1.
If the underlying powerlaw decay continues as is, we predict an XRT count rate of 0.008 counts/s at T+24hr, which corresponds to an observed 0.3-10keV flux of 2.9e-13 erg cm^-2 s^-1.
This circular is an official product of the Swift-XRT team.
GCN Circular #7467
Richard J. Cool (Arizona), Daniel J. Eisenstein (Arizona), David W. Hogg (NYU), Michael R. Blanton (NYU), David J. Schlegel (LBNL), J. Brinkmann (APO), Donald Q. Lamb (Chicago), Donald P. Schneider (PSU), and Daniel E. Vanden Berk (PSU) report:
The Sloan Digital Sky Survey (SDSS) imaged the field of burst GRB080319A prior to the burst. As these data should be useful as a pre-burst comparison and for calibrating photometry, we are supplying the images and photometry measurements for this GRB field to the community.
Data from the SDSS, including 5 FITS images, 3 JPGS, and 3 files of photometry and astrometry, are being placed at http://mizar.as.arizona.edu/~grb/public/GRB080319A
We supply FITS images in each of the 5 SDSS bands of a 8'x8' region centered on the GRB position (ra=206.333 (13:45:19.9), dec=44.0803 (44:04:49.1); GCN 7426), as well as 3 gri color-composite JPGs (with different stretches). The units in the FITS images are nanomaggies per pixel. A pixel is 0.396 arcsec on a side. A nanomaggie is a flux-density unit equal to 10^-9 of a magnitude 0 source or, to the extent that SDSS is an AB system, 3.631e-6 Jy. The FITS images have WCS astrometric information.
In the file GRB080319A_sdss.calstar.dat, we report photometry and astrometry of 227 bright stars (r<20.5) within 15' of the burst location. The magnitudes presented in this file are asinh magnitudes as are standard in the SDSS (Lupton 1999, AJ, 118, 1406). Beware that some of these stars are not well-detected in the u-band; use the errors and object flags to monitor data quality.
In the files GRB080319A_sdss.objects_flux.dat and GRB080319A_sdss.objects_magnitudes.dat, we report photometry of 404 objects detected within 6' of the GRB position. We have removed saturated objects and objects with model magnitudes fainter than 23.0 in the r-band. The fluxes listed in GRB080319A_sdss.objects_flux.dat are in nanomaggies while the magnitudes listed in GRB080319A_sdss.objects_magnitudes.dat are asinh magnitudes.
All quantities reported are standard SDSS photometry, meaning that they are very close to AB zeropoints and magnitudes are quoted in asinh magnitudes. Photometric zeropoints are known to about 2% rms. None of the photometry is corrected for dust extinction. The Schlegel, Finkbeiner, and Davis (1998) predictions for this region are A_U=0.075 mag, A_g=0.055 mag, A_r = 0.040 mag, A_i=0.030 mag, and A_z=0.021 mag.
The file GRB080319A_sdss.spectro.dat contains a list of the 6 objects with SDSS spectroscopy within 6 arcminutes of the GRB position. In addition to the redshift and 1-sigma error for each object, this file also lists the object spectroscopic classification.
SDSS astrometry is generally better than 0.1 arcsecond per coordinate. Users requiring high precision astrometry should take note that the SDSS astrometric system can differ from other systems such as those used in other notices; we have not checked the offsets in this region.
More detailed information pertaining to our SDSS GRB releases can be found in our initial data release paper (Cool et al. 2006, PASP 118, 733). See the SDSS DR4 documentation for more details: http://www.sdss.org/dr5.
These data have been reduced using a slightly different pipeline than that used for SDSS public data releases. We cannot guarantee that the values here will exactly match those in the data release in which these data are included. In particular, we expect the photometric calibrations to differ by of order 0.01 mag.
This note may be cited, but please also cite the SDSS data release paper, Adelman-McCarthy et al. (2007, ApJS, 172, 634), when using the data or referring to the technical documentation.
GCN Circular #7495
S. T. Holland (CRESST/GSFC/USRA) and C. Pagani (PSU) report on behalf of the Swift/UVOT team:
The Swift/UVOT observed the field of GRB 080319A starting 542 s after the BAT trigger (Pagani et al., GCN Circ. 7426). We detect the optical afterglow in the white filter at the location of the P60 source (Cenko, 2008, GCN Circ. 7429).
Magnitudes and upper limits are reported below.
```
Filter    T_start (s) T_stop  Exposure      Mag  Err  Comment
    v          669       1544      432     >20.7       3-sigma UL
    b          767       1480       29     >19.8       3-sigma UL
    u          743       1618       58     >19.9       3-sigma UL
  white        562        662       98      21.1  0.3
               875        975       98     >21.4       3-sigma UL
```
The above magnitudes are not corrected for the Galactic extinction corresponding to a reddening of E_{B-V} = 0 .02 mag (Schlegel et al., 1998, ApJS, 500, 525). The photometry is on the UVOT flight system described in Poole et al. (2008, MNRAS, 383,627). No early-time upper limits are available for the uvw1, uvm2, and uvw2 filters due to the lack of data resulting from the slew to GRB 080319B, which occurred 25 minutes after GRB 080319A.
GCN Report 121.1
GCN_Report 121.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_121_1.pdf by C. Pagani at PSU titled: "Final Swift Observations of GRB 080319A"
GCN Circular #7570
J. Wren, W.T. Vestrand, P.R. Wozniak, H. Davis of Los Alamos National Laboratory report:
Our RAPTOR telescopes imaged the location of Swift trigger 306754 (Pagani et al., GCN 7426). We do not detect the optical counterpart initially reported by Cenko et al. (GCN 7429). The location of the counterpart was within the field of view of our continuous all-sky monitoring system. We can place 5 sigma limits at approximately magnitude 9.0 during the time period within 5 minutes both before and after the trigger. Our narrow-field instruments began observing the location at 05:46:51.90 UTC, 69.8 s after the Swift trigger, but also did not detect the counterpart. The limiting magnitudes of our unfiltered observations when calibrated to the USNO-B1 R-band are given in the following table.
```
t-mid(s)    exp(s)     mag     mag-err
--------------------------------------------
-19.18      10.0       9.0     5 sigma limit
14.07       10.0       9.0     5 sigma limit
72.35        5.0      16.9     5 sigma limit
156.60      10.0      17.4     5 sigma limit
423.25      30.0      18.0     5 sigma limit
```
GCN Circular #7635
Garczarczyk M., Gaug M., Antonelli A., Bastieri D., Covino S., Galante N., La Barbera A., Longo F. and Scapin V. for the MAGIC collaboration
The MAGIC Imaging Atmospheric Cherenkov Telescope performed a follow-up observation of the BAT burst GRB080319A (GCN circular 7426, Pagani et al.). We received the GCN alert at 05:46:45 UT (T0+63s), data taking with MAGIC started at 05:50:32 UT (T0+290s). The observation continued for 1736s, starting at the zenith angle of 35 degrees.
No evidence for VHE gamma-ray emission above the analysis threshold of 175 GeV was found. The observation was carried out in (less sensitive) moon-observation mode.
A preliminary analysis, for the hypothesis of steady emission and assumption of a differential photon spectral index of -2.5, yields the following 95% CL differential flux upper limits, including a 30% systematic uncertainty on the telescope efficiency:
```
E (125- 175 GeV): 0.57 * 10^-10 erg/cm^2/s
E (175- 300 GeV): 0.11 * 10^-10 erg/cm^2/s
E (300-1000 GeV): 0.06 * 10^-10 erg/cm^2/s
```
for a time window from 05:50:01 UT to 06:19:01 UT.
For the same time window, we can also exclude emission of a constant flux in any 100s time bin smaller than:
```
E (125- 175 GeV): 13.97 * 10^-10 erg/cm^2/s
E (175- 300 GeV):  4.34 * 10^-10 erg/cm^2/s
E (300-1000 GeV):  1.46 * 10^-10 erg/cm^2/s
```
This message can be cited.
GCN Circular #7636
A. Melandri (Liverpool JMU), A. Gomboc (Ljubljana), C. Guidorzi (INAF-OAB), R.J. Smith, I.A. Steele, C.G. Mundell, D.F. Bersier, M.F. Bode, M.J. Burgdorf, S. Kobayashi, C.J. Mottram (Liverpool JMU), P. O'Brien, N. Bannister, N. Tanvir (U. Leicester) report on behalf of larger GRB collaboration:
We observed the field of GRB 080319A (trigger = 306754, Pagani et al. GCN 7426) with the Liverpool Telescope (T_start = 32 min after the burst event) and the Faulkes Telescope North (T_start = 525 min after the burst event).
The optical counterpart reported by Cenko et al. (GCN 7429) and Malesani et al. (GCN 7436), is clearly visible inside the XRT error circle (Beardmore et al., GCN 7448) in our first images :
```
Telescope   Filter   DT_mean(min)   Exposure(s)    Mag     Err
----------------------------------------------------------------------
   LT          r'        34.2         360         21.45   0.16
   LT          r'        43.3         600         21.94   0.40
   FTN         r'       542.3        1000        >20.61
----------------------------------------------------------------------
```
Magnitudes were calibrated with respect to SDSS calibration's field (Cool et al. GCN 7467).
ApJ 817, 7 (2016) SED fit of host: 2.43+0.20-0.36 helps in solving ambiguity in XS spectroscopy: redshift determined to z=2.0265

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Jochen Greiner, last update: 22-Feb-2016 [Disclaimer]