Gamma-ray Burst 080602

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:31:00 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     312958,   Seg_Num: 0
GRB_RA:           19.173d {+01h 16m 41s} (J2000),
                  19.278d {+01h 17m 07s} (current),
                  18.547d {+01h 14m 11s} (1950)
GRB_DEC:          -9.251d {-09d 15' 02"} (J2000),
                  -9.206d {-09d 12' 22"} (current),
                  -9.514d {-09d 30' 50"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       9890 [cnts]    Image_Peak=233 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   265     E_range: 25-100 keV
BKG_INTEN:       103212 [cnts]
BKG_TIME:        5397.16 SOD {01:29:57.16} UT
BKG_DUR:         24 [sec]
GRB_DATE:        14619 TJD;   154 DOY;   08/06/02
GRB_TIME:        5428.07 SOD {01:30:28.07} UT
GRB_PHI:          -0.83 [deg]
GRB_THETA:        51.29 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.37 [sigma]
IMAGE_SIGNIF:    8.11 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +2  +6  +0  +0 -51  +1 
SUN_POSTN:        70.39d {+04h 41m 34s}  +22.21d {+22d 12' 50"}
SUN_DIST:         59.12 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.05d {+02h 52m 13s}  +21.70d {+21d 42' 14"}
MOON_DIST:        38.73 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.56,-71.15 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       14.06,-16.05 [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 = 100.24,20.32 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:32:52 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     312958,   Seg_Num: 0
GRB_RA:           19.1766d {+01h 16m 42.3s} (J2000),
                  19.2819d {+01h 17m 07.6s} (current),
                  18.5509d {+01h 14m 12.2s} (1950)
GRB_DEC:          -9.2336d {-09d 14' 00.9"} (J2000),
                  -9.1893d {-09d 11' 21.6"} (current),
                  -9.4971d {-09d 29' 49.3"} (1950)
GRB_ERROR:       5.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       6.44e-10 [erg/cm2/sec]
GRB_SIGNIF:      5.47 [sigma]
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5539.66 SOD {01:32:19.66} UT,   111.6 [sec] since BAT Trigger Time
TAM[0-3]:        327.65 237.23 261.23 243.82
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        70.39d {+04h 41m 34s}  +22.21d {+22d 12' 50"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.07d {+02h 52m 18s}  +21.71d {+21d 42' 34"}
MOON_DIST:        38.73 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.56,-71.14 [deg] galactic lon,lat of the burst
ECL_COORDS:       14.07,-16.03 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.05 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:33:02 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     312958,   Seg_Num: 0
GRB_RA:           19.1766d {+01h 16m 42.3s} (J2000),
                  19.2819d {+01h 17m 07.6s} (current),
                  18.5509d {+01h 14m 12.2s} (1950)
GRB_DEC:          -9.2336d {-09d 14' 00.9"} (J2000),
                  -9.1893d {-09d 11' 21.6"} (current),
                  -9.4971d {-09d 29' 49.3"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       30 [cnts]
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5539.66 SOD {01:32:19.66} UT,   111.6 [sec] since BAT Trigger Time
CENTROID_X:      314.96,  raw= 315  [pixels]
CENTROID_Y:      331.28,  raw= 331  [pixels]
ROLL:            57.13 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   78.45
GRB_POS_XRT_Z:   29.85
IMAGE_URL:       sw00312958000msxps_rw.img
SUN_POSTN:        70.39d {+04h 41m 34s}  +22.21d {+22d 12' 50"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.08d {+02h 52m 18s}  +21.71d {+21d 42' 36"}
MOON_DIST:        38.73 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.56,-71.14 [deg] galactic lon,lat of the burst
ECL_COORDS:       14.07,-16.03 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:33:08 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     312958,   Seg_Num: 0
GRB_RA:           19.1766d {+01h 16m 42.3s} (J2000),
                  19.2819d {+01h 17m 07.6s} (current),
                  18.5509d {+01h 14m 12.2s} (1950)
GRB_DEC:          -9.2336d {-09d 14' 00.9"} (J2000),
                  -9.1893d {-09d 11' 21.6"} (current),
                  -9.4971d {-09d 29' 49.3"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       30 [cnts]
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5539.66 SOD {01:32:19.66} UT,   111.6 [sec] since BAT Trigger Time
CENTROID_X:      314.96,  raw= 315  [pixels]
CENTROID_Y:      331.28,  raw= 331  [pixels]
ROLL:            57.13 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   78.45
GRB_POS_XRT_Z:   29.85
IMAGE_URL:       sw00312958000msxps_rw.img
SUN_POSTN:        70.39d {+04h 41m 34s}  +22.21d {+22d 12' 50"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.08d {+02h 52m 19s}  +21.71d {+21d 42' 37"}
MOON_DIST:        38.73 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.56,-71.14 [deg] galactic lon,lat of the burst
ECL_COORDS:       14.07,-16.03 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:34:04 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     312958,   Seg_Num: 0
GRB_RA:           19.173d {+01h 16m 41s} (J2000),
                  19.278d {+01h 17m 07s} (current),
                  18.547d {+01h 14m 11s} (1950)
GRB_DEC:          -9.251d {-09d 15' 02"} (J2000),
                  -9.206d {-09d 12' 22"} (current),
                  -9.514d {-09d 30' 50"} (1950)
GRB_DATE:        14619 TJD;   154 DOY;   08/06/02
GRB_TIME:        5428.07 SOD {01:30:28.07} UT
TRIGGER_INDEX:   265
GRB_PHI:          -0.83 [deg]
GRB_THETA:        51.29 [deg]
DELTA_TIME:      -50.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.37 [sigma]
IMAGE_SIGNIF:    8.11 [sigma]
LC_URL:          sw00312958000msb.lc
SUN_POSTN:        70.39d {+04h 41m 34s}  +22.21d {+22d 12' 51"}
SUN_DIST:         59.12 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.09d {+02h 52m 21s}  +21.71d {+21d 42' 48"}
MOON_DIST:        38.75 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.56,-71.15 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       14.06,-16.05 [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 = 100.24,20.32 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:34:59 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.196d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.247d {-09d 14' 49"} (J2000)
POINT_ROLL:      57.133d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5550.47 SOD {01:32:30.47} UT,   122.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.321
N_STARS:         6
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00312958000msufc0122.fits
SUN_POSTN:        70.39d {+04h 41m 34s}  +22.21d {+22d 12' 51"}
SUN_DIST:         59.10 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.10d {+02h 52m 23s}  +21.72d {+21d 42' 58"}
MOON_DIST:        38.75 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:35:39 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.196d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.247d {-09d 14' 49"} (J2000)
POINT_ROLL:      57.133d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5550.47 SOD {01:32:30.47} UT,   122.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.321
N_STARS:         6
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00312958000msufc0122.fits
SUN_POSTN:        70.39d {+04h 41m 34s}  +22.21d {+22d 12' 51"}
SUN_DIST:         59.10 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.10d {+02h 52m 25s}  +21.72d {+21d 43' 05"}
MOON_DIST:        38.75 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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 02 Jun 08 01:36:23 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.196d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.247d {-09d 14' 49"} (J2000)
ROLL:            57.133d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5550.47 SOD {01:32:30.47} UT,   122.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     234063153
X_OFFSET:        669 [pixels]
Y_OFFSET:        777 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       829
Y_GRB_POS:       937
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0122.fits
SUN_POSTN:        70.39d {+04h 41m 35s}  +22.21d {+22d 12' 51"}
SUN_DIST:         59.10 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.11d {+02h 52m 27s}  +21.72d {+21d 43' 14"}
MOON_DIST:        38.76 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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 02 Jun 08 01:36:54 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.196d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.247d {-09d 14' 49"} (J2000)
ROLL:            57.133d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5550.47 SOD {01:32:30.47} UT,   122.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     234063153
X_OFFSET:        669 [pixels]
Y_OFFSET:        777 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       829
Y_GRB_POS:       937
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0122.fits
SUN_POSTN:        70.39d {+04h 41m 35s}  +22.21d {+22d 12' 52"}
SUN_DIST:         59.10 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.12d {+02h 52m 28s}  +21.72d {+21d 43' 19"}
MOON_DIST:        38.76 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:44:37 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 45"} (J2000)
POINT_ROLL:      57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5656.38 SOD {01:34:16.38} UT,   228.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        3.426
N_STARS:         12
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00312958000msufc0228.fits
SUN_POSTN:        70.40d {+04h 41m 36s}  +22.21d {+22d 12' 54"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.20d {+02h 52m 48s}  +21.75d {+21d 44' 45"}
MOON_DIST:        38.83 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:45:06 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 45"} (J2000)
POINT_ROLL:      57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5656.38 SOD {01:34:16.38} UT,   228.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        3.426
N_STARS:         12
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00312958000msufc0228.fits
SUN_POSTN:        70.40d {+04h 41m 36s}  +22.22d {+22d 12' 54"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.21d {+02h 52m 50s}  +21.75d {+21d 44' 50"}
MOON_DIST:        38.83 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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 02 Jun 08 01:45:13 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     312958,   Seg_Num: 0
GRB_RA:           19.1752d {+01h 16m 42.0s} (J2000),
                  19.2806d {+01h 17m 07.3s} (current),
                  18.5495d {+01h 14m 11.8s} (1950)
GRB_DEC:          -9.2324d {-09d 13' 56.6"} (J2000),
                  -9.1881d {-09d 11' 17.3"} (current),
                  -9.4959d {-09d 29' 45.0"} (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:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5620.00 SOD {01:33:40.00} UT,   191.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        70.40d {+04h 41m 36s}  +22.22d {+22d 12' 54"}
SUN_DIST:         59.12 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.21d {+02h 52m 50s}  +21.75d {+21d 44' 52"}
MOON_DIST:        38.84 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.55,-71.14 [deg] galactic lon,lat of the burst
ECL_COORDS:       14.07,-16.03 [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

GCN Circular #7781
A. P. Beardmore (U Leicester), S. D. Barthelmy (GSFC), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), J. A. Kennea (PSU), C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC), K. M. McLean (GSFC/UMD), K. L. Page (U Leicester), D. M. Palmer (LANL) and T. N. Ukwatta (GSFC/GWU) report on behalf of the Swift Team:
At 01:30:28 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080602 (trigger=312958). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 19.173, -9.251 which is
```
   RA(J2000) = 01h 16m 41s
   Dec(J2000) = -09d 15' 02"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a two well-separated peaks with a total duration of about 70 sec. The peak count rate was ~3000 counts/sec (15-350 keV), at ~60 sec after the trigger.
The XRT began observing the field at 01:32:19.7 UT, 111.6 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 19.1766, -9.2336 which is equivalent to:
```
   RA(J2000)  = 01h 16m 42.3s
   Dec(J2000) = -09d 14' 00.9"
```
with an uncertainty of 5.8 arcseconds (radius, 90% containment). This location is 63 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to assess possible redshift constraints using X-ray spectroscopy and the nH-z relation from Grupe et al. (2007).
UVOT took a finding chart exposure of nominal 100 seconds with the White (160-650 nm) filter starting 123 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. Image catalog data are not available at this time. 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 0.03.
Burst Advocate for this burst is A. P. Beardmore (apb AT star.le.ac.uk). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:46:16 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 45"} (J2000)
ROLL:            57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5656.38 SOD {01:34:16.38} UT,   228.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     234063259
X_OFFSET:        669 [pixels]
Y_OFFSET:        777 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       829
Y_GRB_POS:       937
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0228.fits
SUN_POSTN:        70.40d {+04h 41m 36s}  +22.22d {+22d 12' 54"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.22d {+02h 52m 53s}  +21.75d {+21d 45' 03"}
MOON_DIST:        38.84 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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_sources_image.fits.gz file does not exist; skipping the attachment.  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:46:01 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 45"} (J2000)
ROLL:            57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  5656.38 SOD {01:34:16.38} UT,   228.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     234063259
X_OFFSET:        669 [pixels]
Y_OFFSET:        777 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       829
Y_GRB_POS:       937
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0228.fits
SUN_POSTN:        70.40d {+04h 41m 36s}  +22.22d {+22d 12' 54"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.22d {+02h 52m 52s}  +21.75d {+21d 45' 01"}
MOON_DIST:        38.84 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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 02 Jun 08 01:50:16 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
POINT_ROLL:      57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6289.93 SOD {01:44:49.93} UT,   861.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.537
N_STARS:         6
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    10
SL_URL:          sw00312958000msufc0861.fits
SUN_POSTN:        70.40d {+04h 41m 37s}  +22.22d {+22d 12' 56"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.26d {+02h 53m 03s}  +21.76d {+21d 45' 48"}
MOON_DIST:        38.88 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:50:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
POINT_ROLL:      57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6289.93 SOD {01:44:49.93} UT,   861.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.537
N_STARS:         6
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    10
SL_URL:          sw00312958000msufc0861.fits
SUN_POSTN:        70.40d {+04h 41m 37s}  +22.22d {+22d 12' 56"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.27d {+02h 53m 04s}  +21.76d {+21d 45' 53"}
MOON_DIST:        38.88 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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 02 Jun 08 01:52:15 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
ROLL:            57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6289.93 SOD {01:44:49.93} UT,   861.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     234063892
X_OFFSET:        668 [pixels]
Y_OFFSET:        776 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       828
Y_GRB_POS:       936
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0861.fits
SUN_POSTN:        70.41d {+04h 41m 37s}  +22.22d {+22d 12' 56"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.28d {+02h 53m 08s}  +21.77d {+21d 46' 10"}
MOON_DIST:        38.90 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:52:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
ROLL:            57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6289.93 SOD {01:44:49.93} UT,   861.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     234063892
X_OFFSET:        668 [pixels]
Y_OFFSET:        776 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       828
Y_GRB_POS:       936
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0861.fits
SUN_POSTN:        70.41d {+04h 41m 37s}  +22.22d {+22d 12' 56"}
SUN_DIST:         59.11 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.29d {+02h 53m 09s}  +21.77d {+21d 46' 13"}
MOON_DIST:        38.90 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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.  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:57:46 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
POINT_ROLL:      57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6395.91 SOD {01:46:35.91} UT,   967.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        5.224
N_STARS:         8
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00312958000msufc0967.fits
SUN_POSTN:        70.41d {+04h 41m 38s}  +22.22d {+22d 12' 58"}
SUN_DIST:         59.12 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.34d {+02h 53m 22s}  +21.79d {+21d 47' 11"}
MOON_DIST:        38.94 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:58:14 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
POINT_ROLL:      57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6395.91 SOD {01:46:35.91} UT,   967.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        5.224
N_STARS:         8
X_OFFSET:        349 [pixels]
Y_OFFSET:        457 [pixels]
X_MAX:           1308 [pixels]
Y_MAX:           1416 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00312958000msufc0967.fits
SUN_POSTN:        70.41d {+04h 41m 38s}  +22.22d {+22d 12' 58"}
SUN_DIST:         59.12 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.35d {+02h 53m 24s}  +21.79d {+21d 47' 16"}
MOON_DIST:        38.95 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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 02 Jun 08 01:59:09 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
ROLL:            57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6395.91 SOD {01:46:35.91} UT,   967.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     234063998
X_OFFSET:        668 [pixels]
Y_OFFSET:        776 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       828
Y_GRB_POS:       936
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0967.fits
SUN_POSTN:        70.41d {+04h 41m 38s}  +22.22d {+22d 12' 59"}
SUN_DIST:         59.12 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.36d {+02h 53m 26s}  +21.79d {+21d 47' 26"}
MOON_DIST:        38.96 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 02 Jun 08 01:59:31 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     312958,   Seg_Num: 0
POINT_RA:         19.195d {+01h 16m 47s} (J2000)
POINT_DEC:        -9.246d {-09d 14' 44"} (J2000)
ROLL:            57.134d
IMG_START_DATE:  14619 TJD;   154 DOY;   08/06/02
IMG_START_TIME:  6395.91 SOD {01:46:35.91} UT,   967.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     234063998
X_OFFSET:        668 [pixels]
Y_OFFSET:        776 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       828
Y_GRB_POS:       936
BINNING_INDEX:   1
IM_URL:          sw00312958000msuni0967.fits
SUN_POSTN:        70.41d {+04h 41m 38s}  +22.22d {+22d 12' 59"}
SUN_DIST:         59.12 [deg]   Sun_angle= 3.4 [hr] (West of Sun)
MOON_POSTN:       43.36d {+02h 53m 27s}  +21.79d {+21d 47' 30"}
MOON_DIST:        38.96 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      142.63,-71.14 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       14.08,-16.05 [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.  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #7782
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 16 s of overlapping XRT Photon Counting mode and UVOT data for GRB 080602, 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 = 19.17563, -9.23212 which is equivalent to:
```
RA (J2000): 01h 16m 42.15s
Dec (J2000): -09d 13' 55.6"
```
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), the current algorithm is an extension of this method.
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #7783
Daniele Malesani (DARK/NBI), Pierre-Olivier Quirion (Univ. AArhus), and Johan Peter Uldall Fynbo (DARK/NBI), P=E1ll Jakobsson (Univ. Hertfordshire) report on behalf of a larger collaboration:
We observed the field of GRB 080602 (Beardmore et al., GCN 7781) with the NOT telescope. Observations were carried out in the R band at high airmass (~6) and close to twilight. Mean time was June 2.203 UT, 3.4 hr after the trigger. Inside the refined XRT error circle (Beardmore et al., GCN 7782)= , we do not detect any source down to a limiting magnitude R=3D22.3. Observations will be attempted with the VLT on Cerro Paranal, but due to weather the outlook for data is bad. We encourage observations from other sites.
GCN Circular #7784
S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, and T. Cline on behalf of the Konus-Wind team report:
The second, most intense pulse of the GRB 080602 (Swift-BAT trigger #312958: Beardmore et al., GCN 7781) triggered Konus-Wind at T0=5486.229 s UT (01:31:26.229).
As observed by Konus-Wind the burst had a fluence of 7.92(-1.45, +1.47)x10^-6 erg/cm2, and a 256-ms peak flux measured from T0+1.280 s of (1.92 +/- 0.58)x10^-6 erg/cm2/s (both in the 20 keV - 1 MeV energy range).
The spectrum of the most intense part (from T0 to T0+8.448 s) is well fitted (in the 20 keV-1 MeV range) by a simple power law with the photon index of 1.48(-0.17, +0.18) (chi2 = 39.7/53 dof). We note that because of the derived photon index is <2, the fluence is very sensitive to the upper boundary of the energy range. Fitting by a power law with exponential cutoff model: dN/dE ~ (E^-alpha)*exp(-E*(2-alpha)/Ep) yields alpha = 0.96(-0.76, +0.52), and only a lower limit on the peak energy: Ep > 226 keV (chi2 = 36.6/52 dof).
All the quoted errors are at the 90% confidence level.
The Konus-Wind light curve of this GRB is available at http://www.ioffe.rssi.ru/LEA/GRBs/GRB080602_T05486/
GCN Circular #7785
A.P. Beardmore, K.L. Page and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team:
The Swift-XRT observed GRB 080602 (trigger 312958, Beardmore et al. GCN 7781) for one orbit which consisted of 71 s of Windowed Timing mode data starting 118 s after the trigger and 1.23 ks of Photon Counting mode data, 193 s after the trigger.
Using 930 s of overlapping XRT Photon Counting mode and UVOT data, 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 = 19.17574, -9.23207 which is equivalent to:
```
RA (J2000): 01 16 42.18
Dec (J2000): -09 13 55.4
```
with an uncertainty of 1.7 arcsec (radius, 90% confidence). The position is 6.3 arcsec from the on-board position reported in GCN 7781 and 0.4 arcsec from the initial refined XRT position reported in GCN 7782.
At first, the X-ray light curve shows signs of a steep decay with a slope of 4.7 +2.1/-0.9, breaking to a shallower decay of 0.21 +/- 0.16 at a time of 145 +11/-6 s after the trigger. This is followed by a further steepening to a slope of 0.76 +0.41/-0.23 at a time of 561 +276/-201 s.
A spectrum of the Windowed Timing data can be well fit by an absorbed power-law, with a photon index Gamma = 1.63 +/- 0.21 and a column density Nh = (1.0 +/- 0.5) e21 cm^-2, compared with the Galactic column density in this direction of 3.5e20 cm^-2. The observed (unabsorbed) 0.3-10 keV flux is 3.13e-10 (3.61e-10) erg cm^-2 s^-1.
The Photon Counting mode spectrum is also well fit by an absorbed powerlaw, with Nh = (2.1 +/- 0.4) e21 cm^-2 and Gamma = 2.12 +/- 0.15. The observed (unabsorbed) 0.3-10 keV flux is 1.66 e-10 (2.59e-10) erg cm^-2 s^-1. The observed count to flux conversion factor for this data is 3.5e-11 erg cm^-2 count^-1.
Due to the limited XRT data available, no count rate prediction at T+1 day has been made. No further observations with Swift are planned.
This circular is an official product of the Swift-XRT team.
GCN Circular #7786
G. Sato (GSFC/ISAS), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), K. McLean (GSFC/UMD), D. Palmer (LANL), T. Sakamoto (GSFC/UMBC), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-296 to T+302 sec from recent telemetry downlinks, we report further analysis of BAT GRB 080602 (trigger #312958) (Beardmore, et al., GCN Circ. 7781). The BAT ground-calculated position is RA, Dec = 19.177, -9.239 deg, which is
```
   RA(J2000)  =  01h 16m 42.6s 
   Dec(J2000) = -09d 14' 19.8" 
```
with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 19%.
The mask-weighted light curve shows 4 or 5 peaks, the first starting at ~T-25 sec, the second at ~T-15 sec, the 3rd at ~T-5 sec, peaking at ~T+1 sec and ending at ~T+15 sec; the 4th starts at ~T+55 sec and ends at ~T+65 sec. T90 (15-350 keV) is 74 +- 7 sec (estimated error including systematics).
The time-averaged spectrum from T-11.5 to T+69.3 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.43 +- 0.13. The fluence in the 15-150 keV band is 3.2 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+59.60 sec in the 15-150 keV band is 2.9 +- 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/312958/BA/
GCN Report 145.1
GCN_Report 145.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_145_1.pdf by A.P. Beardmore at U. Leicester titled: "Final Swift and INTEGRAL SPI-ACS Observations on GRB 080602"
arXiv:1505.06743 X-shooter redshift: 1.8204

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Jochen Greiner, last update: 25-Jun-2015 [Disclaimer]