Gamma-ray Burst 071118

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 08:58:32 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     296856,   Seg_Num: 0
GRB_RA:          299.817d {+19h 59m 16s} (J2000),
                 299.813d {+19h 59m 15s} (current),
                 299.841d {+19h 59m 22s} (1950)
GRB_DEC:         +70.093d {+70d 05' 34"} (J2000),
                 +70.115d {+70d 06' 53"} (current),
                 +69.954d {+69d 57' 16"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1679 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        14422 TJD;   322 DOY;   07/11/18
GRB_TIME:        32237.62 SOD {08:57:17.62} UT
GRB_PHI:         -170.19 [deg]
GRB_THETA:        16.37 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.67 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -2  +0  +0 +18  +1 
SUN_POSTN:       233.30d {+15h 33m 11s}  -19.17d {-19d 09' 58"}
SUN_DIST:        100.41 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.09d {+22h 12m 21s}  -11.15d {-11d 09' 09"}
MOON_DIST:        84.43 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.67, 19.90 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       31.31, 78.57 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
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 = 57.88,15.28 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 08:59:49 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     296856,   Seg_Num: 0
GRB_RA:          299.7185d {+19h 58m 52.4s} (J2000),
                 299.7140d {+19h 58m 51.3s} (current),
                 299.7442d {+19h 58m 58.6s} (1950)
GRB_DEC:         +70.1247d {+70d 07' 28.9"} (J2000),
                 +70.1464d {+70d 08' 47.2"} (current),
                 +69.9866d {+69d 59' 11.8"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       67 [cnts]
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32360.51 SOD {08:59:20.51} UT,   122.9 [sec] since BAT Trigger Time
CENTROID_X:      293.10,  raw= 293  [pixels]
CENTROID_Y:      232.85,  raw= 233  [pixels]
ROLL:            241.71 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -153.55
GRB_POS_XRT_Z:   -21.67
IMAGE_URL:       sw00296856000msxps_rw.img
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 09' 59"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.10d {+22h 12m 24s}  -11.15d {-11d 08' 51"}
MOON_DIST:        84.47 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.68, 19.94 [deg] galactic lon,lat of the burst
ECL_COORDS:       31.48, 78.60 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 08:59:47 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     296856,   Seg_Num: 0
GRB_RA:          299.7185d {+19h 58m 52.4s} (J2000),
                 299.7140d {+19h 58m 51.3s} (current),
                 299.7442d {+19h 58m 58.6s} (1950)
GRB_DEC:         +70.1247d {+70d 07' 28.9"} (J2000),
                 +70.1464d {+70d 08' 47.2"} (current),
                 +69.9866d {+69d 59' 11.8"} (1950)
GRB_ERROR:       5.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.90e-09 [erg/cm2/sec]
GRB_SIGNIF:      8.18 [sigma]
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32360.51 SOD {08:59:20.51} UT,   122.9 [sec] since BAT Trigger Time
TAM[0-3]:        327.65 237.24 261.40 243.16
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 09' 59"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.10d {+22h 12m 24s}  -11.15d {-11d 08' 51"}
MOON_DIST:        84.47 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.68, 19.94 [deg] galactic lon,lat of the burst
ECL_COORDS:       31.48, 78.60 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 08:59:55 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     296856,   Seg_Num: 0
GRB_RA:          299.7185d {+19h 58m 52.4s} (J2000),
                 299.7140d {+19h 58m 51.3s} (current),
                 299.7442d {+19h 58m 58.6s} (1950)
GRB_DEC:         +70.1247d {+70d 07' 28.9"} (J2000),
                 +70.1464d {+70d 08' 47.2"} (current),
                 +69.9866d {+69d 59' 11.8"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       67 [cnts]
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32360.51 SOD {08:59:20.51} UT,   122.9 [sec] since BAT Trigger Time
CENTROID_X:      293.10,  raw= 293  [pixels]
CENTROID_Y:      232.85,  raw= 233  [pixels]
ROLL:            241.71 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -153.55
GRB_POS_XRT_Z:   -21.67
IMAGE_URL:       sw00296856000msxps_rw.img
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 09' 59"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.10d {+22h 12m 24s}  -11.15d {-11d 08' 49"}
MOON_DIST:        84.47 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.68, 19.94 [deg] galactic lon,lat of the burst
ECL_COORDS:       31.48, 78.60 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 09:01:11 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     296856,   Seg_Num: 0
GRB_RA:          299.817d {+19h 59m 16s} (J2000),
                 299.813d {+19h 59m 15s} (current),
                 299.841d {+19h 59m 22s} (1950)
GRB_DEC:         +70.093d {+70d 05' 34"} (J2000),
                 +70.115d {+70d 06' 53"} (current),
                 +69.954d {+69d 57' 16"} (1950)
GRB_DATE:        14422 TJD;   322 DOY;   07/11/18
GRB_TIME:        32237.62 SOD {08:57:17.62} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -170.19 [deg]
GRB_THETA:        16.37 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.67 [sigma]
LC_URL:          sw00296856000msb.lc
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 10' 00"}
SUN_DIST:        100.41 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.11d {+22h 12m 27s}  -11.14d {-11d 08' 30"}
MOON_DIST:        84.42 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.67, 19.90 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       31.31, 78.57 [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 an image 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 = 57.88,15.28 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 09:01:40 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.793d {+19h 59m 10s} (J2000)
POINT_DEC:       +70.089d {+70d 05' 21"} (J2000)
POINT_ROLL:      241.710d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32369.82 SOD {08:59:29.82} UT,   132.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.258
N_STARS:         47
X_OFFSET:        424 [pixels]
Y_OFFSET:        560 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1519 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00296856000msufc0132.fits
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 10' 00"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.12d {+22h 12m 28s}  -11.14d {-11d 08' 23"}
MOON_DIST:        84.42 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.29, 78.58 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 09:02:10 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.793d {+19h 59m 10s} (J2000)
POINT_DEC:       +70.089d {+70d 05' 21"} (J2000)
POINT_ROLL:      241.710d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32369.82 SOD {08:59:29.82} UT,   132.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.258
N_STARS:         47
X_OFFSET:        424 [pixels]
Y_OFFSET:        560 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1519 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00296856000msufc0132.fits
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 10' 00"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.12d {+22h 12m 29s}  -11.14d {-11d 08' 16"}
MOON_DIST:        84.42 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.29, 78.58 [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:     Sun 18 Nov 07 09:03:13 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.793d {+19h 59m 10s} (J2000)
POINT_DEC:       +70.089d {+70d 05' 21"} (J2000)
ROLL:            241.710d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32369.82 SOD {08:59:29.82} UT,   132.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     217069172
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0132.fits
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 10' 01"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.13d {+22h 12m 31s}  -11.13d {-11d 08' 01"}
MOON_DIST:        84.42 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.29, 78.58 [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:     Sun 18 Nov 07 09:03:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.793d {+19h 59m 10s} (J2000)
POINT_DEC:       +70.089d {+70d 05' 21"} (J2000)
ROLL:            241.710d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32369.82 SOD {08:59:29.82} UT,   132.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     217069172
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0132.fits
SUN_POSTN:       233.30d {+15h 33m 12s}  -19.17d {-19d 10' 01"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.13d {+22h 12m 32s}  -11.13d {-11d 07' 53"}
MOON_DIST:        84.42 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.29, 78.58 [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:     Sun 18 Nov 07 09:11:43 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
POINT_ROLL:      241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32475.86 SOD {09:01:15.86} UT,   238.2 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.700
N_STARS:         82
X_OFFSET:        664 [pixels]
Y_OFFSET:        787 [pixels]
X_MAX:           1623 [pixels]
Y_MAX:           1746 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00296856000msufc0238.fits
SUN_POSTN:       233.31d {+15h 33m 14s}  -19.17d {-19d 10' 06"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.20d {+22h 12m 48s}  -11.10d {-11d 05' 55"}
MOON_DIST:        84.40 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 09:12:11 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
POINT_ROLL:      241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32475.86 SOD {09:01:15.86} UT,   238.2 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.700
N_STARS:         82
X_OFFSET:        664 [pixels]
Y_OFFSET:        787 [pixels]
X_MAX:           1623 [pixels]
Y_MAX:           1746 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00296856000msufc0238.fits
SUN_POSTN:       233.31d {+15h 33m 14s}  -19.17d {-19d 10' 06"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.21d {+22h 12m 49s}  -11.10d {-11d 05' 49"}
MOON_DIST:        84.40 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:13:07 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
ROLL:            241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32475.86 SOD {09:01:15.86} UT,   238.2 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     217069278
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0238.fits
SUN_POSTN:       233.31d {+15h 33m 14s}  -19.17d {-19d 10' 07"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.21d {+22h 12m 51s}  -11.09d {-11d 05' 35"}
MOON_DIST:        84.40 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:13:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
ROLL:            241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32475.86 SOD {09:01:15.86} UT,   238.2 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     217069278
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0238.fits
SUN_POSTN:       233.31d {+15h 33m 14s}  -19.17d {-19d 10' 07"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.22d {+22h 12m 52s}  -11.09d {-11d 05' 30"}
MOON_DIST:        84.40 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:17:52 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 33"} (J2000)
POINT_ROLL:      241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33110.41 SOD {09:11:50.41} UT,   872.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.353
N_STARS:         62
X_OFFSET:        664 [pixels]
Y_OFFSET:        787 [pixels]
X_MAX:           1623 [pixels]
Y_MAX:           1746 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00296856000msufc0872.fits
SUN_POSTN:       233.31d {+15h 33m 15s}  -19.17d {-19d 10' 10"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.25d {+22h 13m 01s}  -11.07d {-11d 04' 25"}
MOON_DIST:        84.38 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:18:34 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 33"} (J2000)
ROLL:            241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33110.41 SOD {09:11:50.41} UT,   872.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     217069912
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0872.fits
SUN_POSTN:       233.31d {+15h 33m 15s}  -19.17d {-19d 10' 10"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.26d {+22h 13m 03s}  -11.07d {-11d 04' 15"}
MOON_DIST:        84.38 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:18:57 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 33"} (J2000)
ROLL:            241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33110.41 SOD {09:11:50.41} UT,   872.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     217069912
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0872.fits
SUN_POSTN:       233.31d {+15h 33m 15s}  -19.17d {-19d 10' 10"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.26d {+22h 13m 03s}  -11.07d {-11d 04' 09"}
MOON_DIST:        84.38 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:17:23 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 33"} (J2000)
POINT_ROLL:      241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33110.41 SOD {09:11:50.41} UT,   872.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.353
N_STARS:         62
X_OFFSET:        664 [pixels]
Y_OFFSET:        787 [pixels]
X_MAX:           1623 [pixels]
Y_MAX:           1746 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00296856000msufc0872.fits
SUN_POSTN:       233.31d {+15h 33m 15s}  -19.17d {-19d 10' 09"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.25d {+22h 13m 00s}  -11.08d {-11d 04' 32"}
MOON_DIST:        84.39 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 09:23:56 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
POINT_ROLL:      241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33216.99 SOD {09:13:36.99} UT,   979.4 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.187
N_STARS:         99
X_OFFSET:        664 [pixels]
Y_OFFSET:        787 [pixels]
X_MAX:           1623 [pixels]
Y_MAX:           1746 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00296856000msufc0979.fits
SUN_POSTN:       233.32d {+15h 33m 16s}  -19.17d {-19d 10' 13"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.31d {+22h 13m 14s}  -11.05d {-11d 02' 56"}
MOON_DIST:        84.37 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 18 Nov 07 09:24:23 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
POINT_ROLL:      241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33216.99 SOD {09:13:36.99} UT,   979.4 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.187
N_STARS:         99
X_OFFSET:        664 [pixels]
Y_OFFSET:        787 [pixels]
X_MAX:           1623 [pixels]
Y_MAX:           1746 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00296856000msufc0979.fits
SUN_POSTN:       233.32d {+15h 33m 16s}  -19.17d {-19d 10' 14"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.31d {+22h 13m 14s}  -11.05d {-11d 02' 49"}
MOON_DIST:        84.37 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:25:05 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
ROLL:            241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33216.99 SOD {09:13:36.99} UT,   979.4 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     217070019
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0979.fits
SUN_POSTN:       233.32d {+15h 33m 16s}  -19.17d {-19d 10' 14"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.32d {+22h 13m 16s}  -11.04d {-11d 02' 39"}
MOON_DIST:        84.37 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:25:31 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     296856,   Seg_Num: 0
POINT_RA:        299.794d {+19h 59m 11s} (J2000)
POINT_DEC:       +70.092d {+70d 05' 32"} (J2000)
ROLL:            241.713d
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  33216.99 SOD {09:13:36.99} UT,   979.4 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     217070019
X_OFFSET:        984 [pixels]
Y_OFFSET:        1107 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1144
Y_GRB_POS:       1267
BINNING_INDEX:   1
IM_URL:          sw00296856000msuni0979.fits
SUN_POSTN:       233.32d {+15h 33m 16s}  -19.17d {-19d 10' 14"}
SUN_DIST:        100.40 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.32d {+22h 13m 17s}  -11.04d {-11d 02' 32"}
MOON_DIST:        84.37 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.66, 19.91 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.31, 78.58 [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:     Sun 18 Nov 07 09:26:31 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     296856,   Seg_Num: 0
GRB_RA:          299.7178d {+19h 58m 52.2s} (J2000),
                 299.7133d {+19h 58m 51.1s} (current),
                 299.7435d {+19h 58m 58.4s} (1950)
GRB_DEC:         +70.1244d {+70d 07' 27.8"} (J2000),
                 +70.1461d {+70d 08' 46.1"} (current),
                 +69.9863d {+69d 59' 10.7"} (1950)
GRB_ERROR:       4.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32478.00 SOD {09:01:18.00} UT,   240.4 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       233.32d {+15h 33m 16s}  -19.17d {-19d 10' 15"}
SUN_DIST:        100.39 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.33d {+22h 13m 19s}  -11.04d {-11d 02' 18"}
MOON_DIST:        84.40 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.68, 19.94 [deg] galactic lon,lat of the burst
ECL_COORDS:       31.48, 78.60 [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.php for details.

GCN Circular #7106
J. R. Cummings (NASA/UMBC), G. Cusumano (INAF-IASFPA), N. Gehrels (NASA/GSFC), C. Guidorzi (Univ Bicocca&INAF-OAB), S. T. Holland (CRESST/USRA/GSFC), C. B. Markwardt (CRESST/GSFC/UMD), A. Moretti (INAF-OAB), D. M. Palmer (LANL), G. Tagliaferri (INAF-OAB), T. N. Ukwatta (GSFC/GWU) and D. E. Vanden Berk (PSU) report on behalf of the Swift Team:
At 08:57:17 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 071118 (trigger=296856). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 299.817, +70.093 which is
```
   RA(J2000) = 19h 59m 16s
   Dec(J2000) = +70d 05' 34"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). As is usual for image triggers, there is no obvious variation in the TDRSS light curve.
The XRT began observing the field at 08:59:20 UT, 123 seconds after the BAT trigger. Using prompt downlinked data, we find a fading X-ray source located at RA, Dec 299.7178, 70.1245 which is
```
   RA(J2000)  = 19 58 52.27
   Dec(J2000) = +70 07 28.2
```
with an uncertainty of 4.0 arcsec (radius, 90% containment). This location is 166 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 1.9e-09 erg/cm2/s (0.2-10 keV).
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 132 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. However, there may be a marginally detected source inside the XRT error circle, at RA(J2000) = 19 58 52.1, DEC(J2000) = +70 07 29, with an uncertainty of 1 arcsecond, that is somewhat obscured by the halo of a nearby star. No correction has been made for the expected extinction corresponding to E(B-V) of 0.37.
Burst Advocate for this burst is J. R. Cummings (jayc AT milkyway.gsfc.nasa.gov). 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:     Sun 18 Nov 07 09:33:18 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     296856,   Seg_Num: 0
GRB_RA:          299.7155d {+19h 58m 51.72s} (J2000),
                 299.7110d {+19h 58m 50.64s} (current),
                 299.7412d {+19h 58m 57.89s} (1950)
GRB_DEC:         +70.1247d {+70d 07' 28.9"} (J2000),
                 +70.1464d {+70d 08' 47.1"} (current),
                 +69.9866d {+69d 59' 11.8"} (1950)
GRB_ERROR:       9.7 [arcsec radius, statistical only]
GRB_MAG:         19.00 +/- 1.00 [mag]
FILTER:          10, White
IMG_START_DATE:  14422 TJD;   322 DOY;   07/11/18
IMG_START_TIME:  32371.00 SOD {08:59:31.00} UT,   133.4 [sec] since BAT Trigger Time
SUN_POSTN:       233.32d {+15h 33m 17s}  -19.17d {-19d 10' 19"}
SUN_DIST:        100.39 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:      333.39d {+22h 13m 33s}  -11.01d {-11d 00' 38"}
MOON_DIST:        84.39 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      102.68, 19.94 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       31.48, 78.60 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT UVOT Position Notice.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        Very uncertain detection

GCN Circular #7109
C. Markwardt (GSFC/UMD), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), D. Palmer (LANL), 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-239 to T+303 sec from the recent telemetry downlink, we report further analysis of BAT GRB 071118 (trigger #296856) (Cummings, et al., GCN Circ. 7106). The BAT ground-calculated position is RA, Dec = 299.839, 70.130 deg, which is
```
   RA(J2000)  = 19h 59m 21.4s 
   Dec(J2000) = 70d 07' 47" 
```
with an uncertainty of 2.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows a broad single peak starting at ~T-25 sec, peaking at ~T+55 sec, and ending at ~T+110 sec. T90 (15-350 keV) is 71 +- 20 sec (estimated error including systematics).
The time-averaged spectrum from T+4.5 to T+81.2 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.63 +- 0.29. The fluence in the 15-150 keV band is 5.0 +- 1.0 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+80.26 sec in the 15-150 keV band is 0.3 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
This burst satisfies Sakamoto/Ukwatta Swift-BAT possible high-z criteria:
```
1) Power law photon index = 1.63 (PL photon index < 2)
2) 1-s peak photon flux = 0.3    (1-s peak photon flux < 1.0 ph/cm2/s)
3) Light curve variance = 4e-05  (Variance < 0.0001)
4) T90/(Peak photon flux) = 220  (T90/(Peak photon flux) > 200)
```
Based on a limited sample of bursts, these criteria yield an 85% chance it has a redshift greater than 3.5. Deep IR observations are strongly encouraged.
GCN Circular #7111
A. Moretti (INAF-OAB), J. R. Cummings (NASA/UMBC), C. Guidorzi (Univ. Bicocca & INAF-OAB), P. Romano (Univ. Bicocca & INAF-OAB), P. Evans (U Leicester)report on behalf of the Swift-XRT team:
We have analysed the first 4 orbits of Swift-XRT data obtained for GRB 071118 (trigger number 296856, Cummings et al., GCN Circ. 7106). The data consist of 122 s in Windowed Timing (WT) mode, starting 128 s after the BAT trigger and 8.8 ks in Photon Counting (PC) mode. Using 1298 s of overlapping XRT Photon Counting mode and UVOT V-band 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 = 299.71558, 70.12449 which is equivalent to:
```
RA (J2000):  19 58 51.74
Dec (J2000): +70 07 28.2
```
with an uncertainty of 1.6 arcsec (radius, 90% confidence). This location is 2.7 arcseconds from the XRT position measured using prompt downlinked data (Cummings et al., GCN Circ. 7106) and 152 arcseconds from the BAT refined position (Markwardt et al. GCN Circ. 7109).
The light-curve, in the first orbit (up to 2 ks from the trigger) shows a steep decay accompanied by flaring activity Since the second orbit, the afterglow shows a more regular decay with a shallow phase (alpha1=0.6+/-0.2) until 11 ks and a steeper decay (alpha2=1.6+/-0.2).
The spectrum formed from all the WT data can be modelled with a power-law of photon index Gamma = 1.64 +/- 0.13, with an absorbing column of NH = (2.7 +/- 0.6)e21 cm^-2 (in excess with respect to the Galactic value of 9.7e20 cm^-2). The spectrum formed from the PC data can be modelled with a power-law of photon index Gamma = 1.62 +/- 0.06, with an absorbing column of NH = (2.6 +/- 0.4)e21 cm^-2, which is consistent with the previous one.
Assuming the light-curve continues to decay with alpha2=1.6, the count rate at 48 hours is predicted to be 0.002 count s^-1. This corresponds to an observed (unabsorbed) flux of 1.3e-13 (1.7e-13) erg cm^-2 s^-1.
This circular is an official product of the Swift-XRT team.
GCN Circular #7116
M. De Pasquale, P. Schady (MSSL-UCL) and J. Cummings (GSFC/GWU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began observing the field of GRB 071118 (Cummings et al, GCN 7106) 123s after the BAT trigger.
In the v band finding chart, an uncatalogued source is detected inside the refined XRT error circle (Moretti et al 7111) with ~6 sigma significance. This source looks extended; however it is not found at late times, which indicates that it is the optical afterglow of GRB 071118. Its detection suggests that this GRB took place at redshift z<~5. The coordinates of this source are
```
  RA:    19 58 51.8
  Dec:  +70 07 29.2
```
with an error of 0.6 arcsecond. No new source is detected within the XRT error circle in the b, u or uv filters, either in the single or co-added exposures.
In the table below, we indicate the magnitude of the optical afterglow and the 3sigma upper limits. We do caution that the photometry may be affected by the halo of a near bright star and the crowded field.
Filter Time (s) Exp time (s) Mag
White 134-233 98 > 20.6
White 734-743 9.8 > 19.4
White 874-973 98 20.4 +/- 0.2
White 1484-1983 39 > 20.6
White 5756-7391 393 > 21.4
v 240-639 393 19.1 +/- 0.2
v 774-793 9.8 > 18.1
v 981-1380 393 19.1 +/- 0.2
v 1524-2033 78 > 19.1
v 6166-7801 198 > 19.2
v 17862-18769 885 > 20.4
b 720-1696 87 >20.0
b 5551-7186 393 >20.6
u 695-2093 122 >20.0
u 5345-13654 1096 >21.0
w1 670-2083 136 >19.9
w1 6576-6775 1078 >21.2
um2 646-2058 136 >20.4
um2 11126-18883 1250 >21.2
uw2 750-2009 98 >19.7
uw2 6371-18883 750 >21.1
No correction has been made for the expected high Galactic extinction, corresponding to E(B-V) of 0.37.
GCN Circular #7118
A. de Ugarte Postigo (ESO, Chile), A.J. Castro-Tirado, F.J. Aceituno & D. Diaz-Fraile (IAA-CSIC, Granada) on behalf of a larger collaboration report:
We have observed the field of GRB 071118 (Cummings et al. GCN 7106) with the 1.5m telescope at Sierra Nevada Observatory in Granada (Spain) starting at 18:00 UT (~9 hours after the burst). We detect the afterglow reported by UVOT (De Pasquale et al. GCN 7116) in a 18x300s exposure I-band image (with mean date Nov 18.8038 UT) as a faint object of I~21.7. It is however not detected in a V band image of 11x300s.
A finding chart can be found at:
http://www.iaa.es/~deugarte/GRBs/071118/GRB071118.jpg
This message may be cited.
GCN Circular #7119
M. Yoshida, K. Yanagisawa, Y. Shimizu, S. Nagayama, H. Toda (OAO, NAOJ) and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration:
We performed optical imaging observations (g', Rc and Ic) of the field of GRB 071118 (Cummings et al., GCN 7106; Markwardt et al. GCN 7109) with 50cm MITSuME telescope at Okayama Astrophysical Observatory from UT 9:00:31 (194 sec after the trigger) to UT 13:03 on November 18 2007.
We found a fading source at the position in the XRT error circle reported by Moretti et al. (GCN 7111) in Rc and Ic bands. We made flux calibration using NOMAD (for g' and Rc) and USNO B1.0 (for Ic) catalogs. The photometric results are following.
```
   mid-UT            exp-T   g'     Rc         Ic
---------------------------------------------------------
2007-11-18  9:03:22   5min   >16.9  18.5+-0.5  >17.8
2007-11-18 10:12:12  25min   >19.1  19.1+-0.3  18.5+-0.3
2007-11-18 11:16:35  45min   >20.0  20.2+-0.3  19.7+-0.3
2007-11-18 12:33:20  57min   >20.3  20.7+-0.4  >20.2
---------------------------------------------------------
```
GCN Circular #7120
S. B. Cenko (Caltech) reports on behalf of a larger collaboration:
We have imaged the field of GRB071118 (Cummings et al., GCN 7106) with the automated Palomar 60-inch telescope beginning at 01:49 UT on 19 November. We do not detect any source at the location of the optical afterglow (de Pasquale et al., GCN 7116). Using the USNO-B1 catalog as a reference, we calculate upper limits of R > 22.5, i' > 22.5 at this epoch.
GCN Report 109.1
GCN_Report 109.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_109_1.pdf by J.R. Cummings at UMBC/NASA/GSFC titled: "Swift Observations of GRB 071118"

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Jochen Greiner, last update: 03-Dec-2007 [Disclaimer]