Gamma-ray Burst 080707

(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 07 Jul 08 08:34:18 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     316204,   Seg_Num: 0
GRB_RA:           32.632d {+02h 10m 32s} (J2000),
                  32.757d {+02h 11m 02s} (current),
                  31.895d {+02h 07m 35s} (1950)
GRB_DEC:         +33.103d {+33d 06' 11"} (J2000),
                 +33.143d {+33d 08' 34"} (current),
                 +32.868d {+32d 52' 03"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5692 [cnts]    Image_Peak=288 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   137     E_range: 15-50 keV
BKG_INTEN:       33371 [cnts]
BKG_TIME:        30461.07 SOD {08:27:41.07} UT
BKG_DUR:         8 [sec]
GRB_DATE:        14654 TJD;   189 DOY;   08/07/07
GRB_TIME:        30473.68 SOD {08:27:53.68} UT
GRB_PHI:         -40.11 [deg]
GRB_THETA:        19.28 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     20.37 [sigma]
IMAGE_SIGNIF:    9.84 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +1  +8  +0  +0 -41  +1 
SUN_POSTN:       106.92d {+07h 07m 41s}  +22.53d {+22d 31' 34"}
SUN_DIST:         65.13 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      162.85d {+10h 51m 24s}   +5.11d {+05d 06' 44"}
MOON_DIST:       119.24 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.46,-26.91 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       41.84, 18.75 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 16.14,6.61 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 07 Jul 08 08:35:14 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     316204,   Seg_Num: 0
GRB_RA:           32.6186d {+02h 10m 28.4s} (J2000),
                  32.7444d {+02h 10m 58.6s} (current),
                  31.8816d {+02h 07m 31.5s} (1950)
GRB_DEC:         +33.1088d {+33d 06' 31.6"} (J2000),
                 +33.1487d {+33d 08' 55.3"} (current),
                 +32.8733d {+32d 52' 24.0"} (1950)
GRB_ERROR:       6.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       20 [cnts]
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30541.97 SOD {08:29:01.97} UT,   68.3 [sec] since BAT Trigger Time
CENTROID_X:      294.78,  raw= 295  [pixels]
CENTROID_Y:      309.87,  raw= 310  [pixels]
ROLL:            78.27 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   27.98
GRB_POS_XRT_Z:   -17.72
IMAGE_URL:       sw00316204000msxps_rw.img
SUN_POSTN:       106.92d {+07h 07m 41s}  +22.53d {+22d 31' 34"}
SUN_DIST:         65.14 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      162.86d {+10h 51m 26s}   +5.11d {+05d 06' 29"}
MOON_DIST:       119.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.91 [deg] galactic lon,lat of the burst
ECL_COORDS:       41.83, 18.76 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 07 Jul 08 08:35:09 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     316204,   Seg_Num: 0
GRB_RA:           32.6186d {+02h 10m 28.4s} (J2000),
                  32.7444d {+02h 10m 58.6s} (current),
                  31.8816d {+02h 07m 31.5s} (1950)
GRB_DEC:         +33.1088d {+33d 06' 31.6"} (J2000),
                 +33.1487d {+33d 08' 55.3"} (current),
                 +32.8733d {+32d 52' 24.0"} (1950)
GRB_ERROR:       6.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       20 [cnts]
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30541.97 SOD {08:29:01.97} UT,   68.3 [sec] since BAT Trigger Time
CENTROID_X:      294.78,  raw= 295  [pixels]
CENTROID_Y:      309.87,  raw= 310  [pixels]
ROLL:            78.27 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   27.98
GRB_POS_XRT_Z:   -17.72
IMAGE_URL:       sw00316204000msxps_rw.img
SUN_POSTN:       106.92d {+07h 07m 41s}  +22.53d {+22d 31' 34"}
SUN_DIST:         65.14 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      162.86d {+10h 51m 26s}   +5.11d {+05d 06' 31"}
MOON_DIST:       119.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.91 [deg] galactic lon,lat of the burst
ECL_COORDS:       41.83, 18.76 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 07 Jul 08 08:35:50 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     316204,   Seg_Num: 0
GRB_RA:           32.632d {+02h 10m 32s} (J2000),
                  32.757d {+02h 11m 02s} (current),
                  31.895d {+02h 07m 35s} (1950)
GRB_DEC:         +33.103d {+33d 06' 11"} (J2000),
                 +33.143d {+33d 08' 34"} (current),
                 +32.868d {+32d 52' 03"} (1950)
GRB_DATE:        14654 TJD;   189 DOY;   08/07/07
GRB_TIME:        30473.68 SOD {08:27:53.68} UT
TRIGGER_INDEX:   137
GRB_PHI:         -40.11 [deg]
GRB_THETA:        19.28 [deg]
DELTA_TIME:      19.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     20.37 [sigma]
IMAGE_SIGNIF:    9.84 [sigma]
LC_URL:          sw00316204000msb.lc
SUN_POSTN:       106.92d {+07h 07m 41s}  +22.53d {+22d 31' 34"}
SUN_DIST:         65.13 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      162.86d {+10h 51m 27s}   +5.11d {+05d 06' 20"}
MOON_DIST:       119.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.46,-26.91 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       41.84, 18.75 [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 = 16.14,6.61 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 07 Jul 08 08:34:59 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     316204,   Seg_Num: 0
GRB_RA:           32.6186d {+02h 10m 28.4s} (J2000),
                  32.7444d {+02h 10m 58.6s} (current),
                  31.8816d {+02h 07m 31.5s} (1950)
GRB_DEC:         +33.1088d {+33d 06' 31.6"} (J2000),
                 +33.1487d {+33d 08' 55.3"} (current),
                 +32.8733d {+32d 52' 24.0"} (1950)
GRB_ERROR:       6.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       3.59e-10 [erg/cm2/sec]
GRB_SIGNIF:      4.47 [sigma]
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30541.97 SOD {08:29:01.97} UT,   68.3 [sec] since BAT Trigger Time
TAM[0-3]:        327.63 237.23 261.28 243.35
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       106.92d {+07h 07m 41s}  +22.53d {+22d 31' 34"}
SUN_DIST:         65.14 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      162.86d {+10h 51m 26s}   +5.11d {+05d 06' 33"}
MOON_DIST:       119.25 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.91 [deg] galactic lon,lat of the burst
ECL_COORDS:       41.83, 18.76 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.74 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 07 Jul 08 08:36:15 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.616d {+02h 10m 28s} (J2000)
POINT_DEC:       +33.100d {+33d 06' 01"} (J2000)
POINT_ROLL:      78.273d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30551.40 SOD {08:29:11.40} UT,   77.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.677
N_STARS:         49
X_OFFSET:        576 [pixels]
Y_OFFSET:        504 [pixels]
X_MAX:           1535 [pixels]
Y_MAX:           1463 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw00316204000msufc0077.fits
SUN_POSTN:       106.92d {+07h 07m 41s}  +22.53d {+22d 31' 34"}
SUN_DIST:         65.15 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.87d {+10h 51m 28s}   +5.10d {+05d 06' 14"}
MOON_DIST:       119.27 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 07 Jul 08 08:36:57 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.616d {+02h 10m 28s} (J2000)
POINT_DEC:       +33.100d {+33d 06' 01"} (J2000)
POINT_ROLL:      78.273d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30551.40 SOD {08:29:11.40} UT,   77.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.677
N_STARS:         49
X_OFFSET:        576 [pixels]
Y_OFFSET:        504 [pixels]
X_MAX:           1535 [pixels]
Y_MAX:           1463 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw00316204000msufc0077.fits
SUN_POSTN:       106.92d {+07h 07m 41s}  +22.53d {+22d 31' 34"}
SUN_DIST:         65.15 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.87d {+10h 51m 30s}   +5.10d {+05d 06' 03"}
MOON_DIST:       119.27 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [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 07 Jul 08 08:37:38 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.616d {+02h 10m 28s} (J2000)
POINT_DEC:       +33.100d {+33d 06' 01"} (J2000)
ROLL:            78.273d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30551.40 SOD {08:29:11.40} UT,   77.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     237112154
X_OFFSET:        815 [pixels]
Y_OFFSET:        814 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       975
Y_GRB_POS:       974
BINNING_INDEX:   1
IM_URL:          sw00316204000msuni0077.fits
SUN_POSTN:       106.92d {+07h 07m 42s}  +22.53d {+22d 31' 33"}
SUN_DIST:         65.15 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.88d {+10h 51m 31s}   +5.10d {+05d 05' 53"}
MOON_DIST:       119.28 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [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 07 Jul 08 08:38:00 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.616d {+02h 10m 28s} (J2000)
POINT_DEC:       +33.100d {+33d 06' 01"} (J2000)
ROLL:            78.273d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30551.40 SOD {08:29:11.40} UT,   77.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     237112154
X_OFFSET:        815 [pixels]
Y_OFFSET:        814 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       975
Y_GRB_POS:       974
BINNING_INDEX:   1
IM_URL:          sw00316204000msuni0077.fits
SUN_POSTN:       106.92d {+07h 07m 42s}  +22.53d {+22d 31' 33"}
SUN_DIST:         65.15 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.88d {+10h 51m 32s}   +5.10d {+05d 05' 47"}
MOON_DIST:       119.28 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [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 07 Jul 08 08:43:03 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.613d {+02h 10m 27s} (J2000)
POINT_DEC:       +33.102d {+33d 06' 06"} (J2000)
POINT_ROLL:      78.272d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30657.34 SOD {08:30:57.34} UT,   183.7 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        4.860
N_STARS:         73
X_OFFSET:        495 [pixels]
Y_OFFSET:        494 [pixels]
X_MAX:           1454 [pixels]
Y_MAX:           1453 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    11
SL_URL:          sw00316204000msufc0183.fits
SUN_POSTN:       106.93d {+07h 07m 43s}  +22.53d {+22d 31' 32"}
SUN_DIST:         65.15 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.92d {+10h 51m 42s}   +5.07d {+05d 04' 30"}
MOON_DIST:       119.33 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.44,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 07 Jul 08 08:43:35 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.613d {+02h 10m 27s} (J2000)
POINT_DEC:       +33.102d {+33d 06' 06"} (J2000)
POINT_ROLL:      78.272d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30657.34 SOD {08:30:57.34} UT,   183.7 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        4.860
N_STARS:         73
X_OFFSET:        495 [pixels]
Y_OFFSET:        494 [pixels]
X_MAX:           1454 [pixels]
Y_MAX:           1453 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    11
SL_URL:          sw00316204000msufc0183.fits
SUN_POSTN:       106.93d {+07h 07m 43s}  +22.53d {+22d 31' 32"}
SUN_DIST:         65.15 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.93d {+10h 51m 43s}   +5.07d {+05d 04' 21"}
MOON_DIST:       119.33 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.44,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [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 07 Jul 08 08:44:52 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.613d {+02h 10m 27s} (J2000)
POINT_DEC:       +33.102d {+33d 06' 06"} (J2000)
ROLL:            78.272d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30657.34 SOD {08:30:57.34} UT,   183.7 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     237112260
X_OFFSET:        815 [pixels]
Y_OFFSET:        814 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       975
Y_GRB_POS:       974
BINNING_INDEX:   1
IM_URL:          sw00316204000msuni0183.fits
SUN_POSTN:       106.93d {+07h 07m 43s}  +22.53d {+22d 31' 31"}
SUN_DIST:         65.16 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.94d {+10h 51m 45s}   +5.07d {+05d 04' 02"}
MOON_DIST:       119.34 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.44,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [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 07 Jul 08 08:44:27 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     316204,   Seg_Num: 0
POINT_RA:         32.613d {+02h 10m 27s} (J2000)
POINT_DEC:       +33.102d {+33d 06' 06"} (J2000)
ROLL:            78.272d
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30657.34 SOD {08:30:57.34} UT,   183.7 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     237112260
X_OFFSET:        815 [pixels]
Y_OFFSET:        814 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       975
Y_GRB_POS:       974
BINNING_INDEX:   1
IM_URL:          sw00316204000msuni0183.fits
SUN_POSTN:       106.93d {+07h 07m 43s}  +22.53d {+22d 31' 32"}
SUN_DIST:         65.15 [deg]   Sun_angle= 5.0 [hr] (West of Sun)
MOON_POSTN:      162.94d {+10h 51m 44s}   +5.07d {+05d 04' 08"}
MOON_DIST:       119.34 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.44,-26.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       41.83, 18.75 [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 Circular #7947
P. Schady (MSSL-UCL), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), A. A. Breeveld (MSSL), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Guidorzi (INAF-OAB), H. A. Krimm (CRESST/GSFC/USRA), C. B. Markwardt (CRESST/GSFC/UMD), A. Moretti (INAF-OAB), P. T. O'Brien (U Leicester), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), D. Perez (U Leicester), R. L. C. Starling (U Leicester) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 08:27:53 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080707 (trigger=316204). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 32.632, +33.103 which is
```
   RA(J2000) = 02h 10m 32s
   Dec(J2000) = +33d 06' 11"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a double-peaked structure with a duration of about 40 sec. The peak count rate was ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 08:29:02.0 UT, 68.3 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source with an enhanced position: RA, Dec 32.61815, 33.10967 which is equivalent to:
```
   RA(J2000)  = 02h 10m 28.36s
   Dec(J2000) = +33d 06' 34.8"
```
with an uncertainty of 3.1 arcseconds (radius, 90% containment). This location is 48 arcseconds from the BAT onboard position, within the BAT error circle.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 6.99e+20 cm^-2 (Kalberla et al. 2005).
The initial flux in the 2.5 s image was 3.59e-10 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 79 seconds after the BAT trigger. No 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 18.5 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 0.10.
Burst Advocate for this burst is P. Schady (ps AT mssl.ucl.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 07 Jul 08 08:44:59 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     316204,   Seg_Num: 0
GRB_RA:           32.6181d {+02h 10m 28.3s} (J2000),
                  32.7439d {+02h 10m 58.5s} (current),
                  31.8811d {+02h 07m 31.4s} (1950)
GRB_DEC:         +33.1096d {+33d 06' 34.5"} (J2000),
                 +33.1495d {+33d 08' 58.1"} (current),
                 +32.8741d {+32d 52' 26.9"} (1950)
GRB_ERROR:       2.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14654 TJD;   189 DOY;   08/07/07
IMG_START_TIME:  30569.00 SOD {08:29:29.00} UT,   95.3 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       106.93d {+07h 07m 43s}  +22.53d {+22d 31' 31"}
SUN_DIST:         65.15 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      162.94d {+10h 51m 46s}   +5.07d {+05d 04' 00"}
MOON_DIST:       119.34 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      141.45,-26.90 [deg] galactic lon,lat of the burst
ECL_COORDS:       41.83, 18.76 [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 #7948
C. Clemens, S. Loew, J. Greiner, A. Yoldas, T. Kruehler (all MPE Garching), A. Kupcu Yoldas (ESO) and G. Szokoly (Eoetvoes Univ., Budapest) report on behalf of the GROND team:
We observed the field of GRB 080707 (Swift trigger 316204; Schady et al., GCN #7947) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m ESO/MPI telescope at La Silla Observatory (Chile).
Observations started at 10:00 UT on July 7th, 2008, 92.2 min after the GRB trigger, and were performed at an average seeing of 2.2" and at an average airmass of 2.6.
We found a faint source within the 2.9'' Swift-XRT error circle at
```
RA (J2000.0) = 02h 10m 28.40s
DEC (J2000.0) = +33d 06' 34.3''
```
with an uncertainty of 0.8".
The object is detected in g' band, implying a redshift smaller than 3.5.
Based on the first 4.4 min of effective exposures in g'r'i'z', we estimate preliminary magnitudes of
```
g' ~ 22.1 mag,
r' ~ 21.5 mag,
i' ~ 21.4 mag and
z' ~ 21.2 mag
```
with typical errors of +/- 0.3. Given magnitudes are calibrated against USNO-B1 field stars.
Please note, that no correction for the galactic foreground reddening of E(B-V) = 0.1 mag (Schlegel et al., 1998) has been applied.
GCN Circular #7949
Johan P. U. Fynbo, Daniele Malesani, & Bo Milang-Jensen (DARK), report on behalf of a larger collaboration:
We observed the field of GRB 080707 (Schady et al., GCN 7947) with the ESO VLT equipped with FORS1.
Inside the XRT error circle, we detect the object first reported by Clemens et al. (GCN 7984) in the R and I bands. The source had R ~ 19.6 on 2008 Jul 7.385 UT (47 min after the trigger), calibrated against USNO-B1. This object is not visible in the DSS (which reaches a deeper limit) and seems brighter than in the later observation reported by Clemens et al. (GCN 7984). It is thus very likely the optical afterglow of GRB 080707. A finding chart is posted at
http://www.astro.ku.dk/~malesani/GRB/080707/080707_finder.jpg
FORS1 spectra were acquired between Jul 7.397 and 7.441 UT with grism 300V. From detection of FeII and MgII absorption features, we infer a redshift z = 1.23. A conservative upper limit z < 2.2 can be set from the lack of Lyman alpha forest in the blue
We acknowledge excellent and enthusiastic support from the observing staff at Paranal, in particular Chris Lidman, Lorena Faundez, Claudia Reyes, and Dominique Naef.
GCN Circular #7950
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 83 s of overlapping XRT Photon Counting mode and UVOT data for GRB 080707, 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 = 32.61905, +33.11020 which is equivalent to:
```
RA (J2000): 02h 10m 28.57s
Dec (J2000): +33d 06' 36.7"
```
with an uncertainty of 2.1 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 #7951
R.L.C. Starling (U. Leicester) and P. Schady (MSSL-UCL) report, on behalf of the Swift XRT team:
We have analysed the first 4 orbits of Swift XRT data (from T0+64s to T0+17.8 ks) for GRB 080707 (trigger=316204, Schady et al., GCN Circ. 7947).
Using 1482 seconds of overlapping XRT Photon Counting (PC) mode and UVOT data, we find an updated astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 32.61860, 33.10983 deg which is equivalent to:
```
RA(J2000) = 02 10 28.46 
Dec(J2000)= +33 06 35.4 
```
with an uncertainty of 1.5 arcseconds (radius, 90% confidence). This position lies 1.35 arcseconds from the optical counterpart reported in Clemens et al. (GCN Circ. 7948).
The light curve can be fit by an initial steep decay followed by a shallow plateau phase. The final orbit of data so far collected may indicate a further break to a steeper slope, but this is not required by the fit. A singly broken power law gives alpha1=5.6+1/-0.8, Tbk=145+17/-13 and alpha2=0.35+0.06/-0.07. A doubly broken power law model gives the following parameters: alpha1=5.5+0.9/-0.8, Tbk1=151+6/-15s, alpha2=0.2+0.1/-0.5, Tbk2=5300+5400/-4200s and alpha3=0.7+0.6/-0.3.
The PC mode spectrum comprising 1.64 ks of data from the latter part of orbit 1 and from orbit 2 (T0+96s - T0+6384s) is well fit with a power law of photon index Gamma=2.1+0.4/-0.5 (90%) absorbed by the Galactic column of 6.99E+20 cm^-2 (Kalberla et al. 2005) and by a column at the inferred redshift of the host galaxy (z=1.23, Fynbo et al. GCN Circ. 7949) which can only be constrained to be nH<1.23e22 cm^-2. The 0.3-10 keV observed (unabsorbed) flux is 5.4e-12 (6.73-12) erg/cm^2/s, corresponding to a count rate of 0.12 count/s, hence the observed count rate to flux conversion is 1 count/s = 4.5e-11 erg/cm^2/s.
The predicted count rate at T0+24h is 0.011 counts/s, assuming a decay rate of alpha=0.7 from the doubly broken power law model.
This is an official product of the Swift XRT team.
GCN Circular #7952
G. Sato (ISAS), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), 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), A. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), P. Schady (MSSL-UCL) M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+480 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080707 (trigger #316204) (Schady et al., GCN Circ. 7947). The BAT ground-calculated position is RA, Dec = 32.627, 33.100 deg which is
```
    RA(J2000)  =  02h 10m 30.5s
    Dec(J2000) = +33d 06' 01.1"
```
with an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 93%.
The mask-weighted light curve consists of two main peaks of roughly equivalent peak flux, the first a boxcar shape from T-2 to T+4 sec, and the second a FRED beginning at T+23 sec and decaying to background by T+32 sec. T90 (15-350 keV) is 27.1 +- 1.1 sec sec (estimated error including systematics).
The time-averaged spectrum from T-1.8 to T+26.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.77 +- 0.19. The fluence in the 15-150 keV band is 5.2 +- 0.6 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+0.22 sec in the 15-150 keV band is 1.0 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/316204/BA/
GCN Circular #7953
P. Schady (MSSL-UCL) and F.E. Marshall (NASA/GSFC) report on behalf of the Swift/UVOT team:
The Swift/UVOT starting taking settled exposures of the field of GRB 080707 80 s after the BAT trigger (Schady et al., GCN Circ. 7947). A faint source is detected in the early white and v-band observations at
```
     RA(J2000.0)  = 02:10:28.40 = 32.61833
     Dec(J2000.0) = +33:06:34.2 = 33.10950
```
with an of 1.1 arcseconds (90% confidence), consistent with the enhanced XRT error circle (Starling et al., GCN Circ. 7951) and the GROND position (Clemens et al., GCN 7948).
The early-time afterglow and 3-sigma upper limits the in co-added frames are as follows:
```
Filter T_start(s)  T_stop(s)  Exp(s)  Mag/3-sigma UL

white   80          5469        294.0    21.40+/-0.31 (3.4 sigma)
white   11355       12221       844.3    > 21.93
v       186         5880        590.1    19.97+/-0.31 (3.4 sigma)
b       3971        18004       1502.6   > 21.74
u       640         17362       1040.0   > 21.18
uvw1    616         16449       1101.7   > 21.41
uvm2    591         22234       1101.7   > 21.29
uvw2    5477        5676        196.6    > 20.22
```
The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E(B-V) = 0.10 mag in the direction of the burst (Schlegel et al. 1998).
GCN Circular #7954
C. Clemens, S. Loew, J. Greiner, A. Yoldas, T. Kruehler (all MPE Garching), A. Kupcu Yoldas (ESO) and G. Szokoly (Eoetvoes Univ., Budapest) report on behalf of the GROND team:
We observed the field of GRB 080707 for a second time at 09:54 UT on July 8th, 2008, 25.4 hr after the GRB trigger with 25.0 min of effective exposures in g'r'i'z'. The observations were performed at an average seeing of 1.6" and at an average airmass of 2.4.
We still detect the faint source mentioned in GCN #7948 within the 1.1'' Swift-UVOT error circle (Schady et al., GCN #7953) with the following preliminary magnitudes of
```
g' ~ 23.8 mag,
r' ~ 23.2 mag and
i' ~ 23.1 mag
```
and typical uncertainties of +/- 0.3 (calibrated against USNO-B1 field stars).
With a magnitude change of delta g' ~ 1.7 mag within 23.9 hr (similarily in r' and i' band) these measurements strongly suggest that the source mentioned in Clemens et al. (GCN #7948) is the afterglow of GRB 080707.
GCN Circular #7956
R.L.C. Starling (U. Leicester) and P. Schady (MSSL-UCL) report on behalf of the Swift XRT team:
We have analysed the Swift XRT X-ray light curve out to T0+162 ks for GRB 080707 (trigger=316204, Schady et al., GCN Circ. 7947). The light curve can be fit with a multiply broken power law as described in GCN Circ. 7951, and we note a possible further break. A fit including this possible break places it at (9 +6/-8)e4 s and the current decay rate is then approximately alpha=2.2. The Swift XRT light curve can be viewed in the on-line repository (Evans et al. 2007) at http://www.swift.ac.uk/xrt_curves/00316204/
Swift XRT continues to observe this source to constrain the current decay and confirm/reject the presence of a late-time break. Ground-based optical observations are strongly encouraged.
This is an official product of the Swift XRT team.
GCN Report 151.1
GCN_Report 151.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_151_1.pdf by P. Schady at MSL-UCL titled: "Final Swift Observations on GRB 080707"

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Jochen Greiner, last update: 18-Jul-2008 [Disclaimer]