Gamma-ray Burst 161117B

(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:     Thu 17 Nov 16 09:50:04 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     722642,   Seg_Num: 0
GRB_RA:          298.855d {+19h 55m 25s} (J2000),
                 299.272d {+19h 57m 05s} (current),
                 297.615d {+19h 50m 28s} (1950)
GRB_DEC:         -67.707d {-67d 42' 23"} (J2000),
                 -67.661d {-67d 39' 38"} (current),
                 -67.838d {-67d 50' 17"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3785 [cnts]    Image_Peak=226 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   148     E_range: 25-100 keV
BKG_INTEN:       20989 [cnts]
BKG_TIME:        35366.82 SOD {09:49:26.82} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17709 TJD;   322 DOY;   16/11/17
GRB_TIME:        35383.72 SOD {09:49:43.72} UT
GRB_PHI:         -70.05 [deg]
GRB_THETA:        29.79 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     22.29 [sigma]
IMAGE_SIGNIF:    10.70 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +0  +0  +0 -44  +0 
SUN_POSTN:       233.14d {+15h 32m 35s}  -19.13d {-19d 07' 47"}
SUN_DIST:         63.36 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.46d {+06h 21m 50s}  +18.80d {+18d 48' 14"}
MOON_DIST:       128.85 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.11,-30.99 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      285.22,-45.79 [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 = 159.05,-3.31 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 09:51:32 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     722642,   Seg_Num: 0
GRB_RA:          298.8296d {+19h 55m 19.10s} (J2000),
                 299.2460d {+19h 56m 59.03s} (current),
                 297.5889d {+19h 50m 21.32s} (1950)
GRB_DEC:         -67.7025d {-67d 42' 09.0"} (J2000),
                 -67.6569d {-67d 39' 24.7"} (current),
                 -67.8341d {-67d 50' 02.8"} (1950)
GRB_ERROR:       4.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       4.69e-09 [erg/cm2/sec]
GRB_SIGNIF:      10.44 [sigma]
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35458.08 SOD {09:50:58.08} UT,   74.4 [sec] since BAT Trigger Time
TAM[0-3]:        327.62 237.21 261.65 243.60
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       233.15d {+15h 32m 35s}  -19.13d {-19d 07' 48"}
SUN_DIST:         63.34 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.47d {+06h 21m 54s}  +18.80d {+18d 48' 14"}
MOON_DIST:       128.86 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.11,-30.98 [deg] galactic lon,lat of the burst
ECL_COORDS:      285.21,-45.78 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.64 arcmin from the BAT position.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 09:51:46 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     722642,   Seg_Num: 0
GRB_RA:          298.8296d {+19h 55m 19.1s} (J2000),
                 299.2460d {+19h 56m 59.0s} (current),
                 297.5889d {+19h 50m 21.3s} (1950)
GRB_DEC:         -67.7025d {-67d 42' 09.0"} (J2000),
                 -67.6569d {-67d 39' 24.7"} (current),
                 -67.8341d {-67d 50' 02.8"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       109 [cnts]
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35458.08 SOD {09:50:58.08} UT,   74.4 [sec] since BAT Trigger Time
CENTROID_X:      249.70,  raw= 250  [pixels]
CENTROID_Y:      287.20,  raw= 287  [pixels]
ROLL:            285.22 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -24.96
GRB_POS_XRT_Z:   -131.05
IMAGE_URL:       sw00722642000msxps_rw.img
SUN_POSTN:       233.15d {+15h 32m 35s}  -19.13d {-19d 07' 48"}
SUN_DIST:         63.34 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.48d {+06h 21m 55s}  +18.80d {+18d 48' 14"}
MOON_DIST:       128.86 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.11,-30.98 [deg] galactic lon,lat of the burst
ECL_COORDS:      285.21,-45.78 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 09:51:40 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     722642,   Seg_Num: 0
GRB_RA:          298.8296d {+19h 55m 19.1s} (J2000),
                 299.2460d {+19h 56m 59.0s} (current),
                 297.5889d {+19h 50m 21.3s} (1950)
GRB_DEC:         -67.7025d {-67d 42' 09.0"} (J2000),
                 -67.6569d {-67d 39' 24.7"} (current),
                 -67.8341d {-67d 50' 02.8"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       109 [cnts]
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35458.08 SOD {09:50:58.08} UT,   74.4 [sec] since BAT Trigger Time
CENTROID_X:      249.70,  raw= 250  [pixels]
CENTROID_Y:      287.20,  raw= 287  [pixels]
ROLL:            285.22 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -24.96
GRB_POS_XRT_Z:   -131.05
IMAGE_URL:       sw00722642000msxps_rw.img
SUN_POSTN:       233.15d {+15h 32m 35s}  -19.13d {-19d 07' 48"}
SUN_DIST:         63.34 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.48d {+06h 21m 54s}  +18.80d {+18d 48' 14"}
MOON_DIST:       128.86 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.11,-30.98 [deg] galactic lon,lat of the burst
ECL_COORDS:      285.21,-45.78 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 09:53:22 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     722642,   Seg_Num: 0
GRB_RA:          298.855d {+19h 55m 25s} (J2000),
                 299.272d {+19h 57m 05s} (current),
                 297.615d {+19h 50m 28s} (1950)
GRB_DEC:         -67.707d {-67d 42' 23"} (J2000),
                 -67.661d {-67d 39' 38"} (current),
                 -67.838d {-67d 50' 17"} (1950)
GRB_DATE:        17709 TJD;   322 DOY;   16/11/17
GRB_TIME:        35383.72 SOD {09:49:43.72} UT
TRIGGER_INDEX:   148
GRB_PHI:         -70.05 [deg]
GRB_THETA:        29.79 [deg]
DELTA_TIME:      71.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     22.29 [sigma]
IMAGE_SIGNIF:    10.70 [sigma]
LC_URL:          sw00722642000msb.lc
SUN_POSTN:       233.15d {+15h 32m 35s}  -19.13d {-19d 07' 49"}
SUN_DIST:         63.35 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.49d {+06h 21m 59s}  +18.80d {+18d 48' 14"}
MOON_DIST:       128.86 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.11,-30.99 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      285.22,-45.79 [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 = 159.05,-3.31 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 09:54:00 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.914d {+19h 55m 39s} (J2000)
POINT_DEC:       -67.719d {-67d 43' 06"} (J2000)
POINT_ROLL:      285.226d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35466.58 SOD {09:51:06.58} UT,   82.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.370
N_STARS:         68
X_OFFSET:        680 [pixels]
Y_OFFSET:        488 [pixels]
X_MAX:           1639 [pixels]
Y_MAX:           1447 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00722642000msufc0082.fits
SUN_POSTN:       233.15d {+15h 32m 35s}  -19.13d {-19d 07' 49"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.50d {+06h 22m 00s}  +18.80d {+18d 48' 13"}
MOON_DIST:       128.84 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.09,-31.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 09:54:28 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.914d {+19h 55m 39s} (J2000)
POINT_DEC:       -67.719d {-67d 43' 06"} (J2000)
POINT_ROLL:      285.226d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35466.58 SOD {09:51:06.58} UT,   82.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.370
N_STARS:         68
X_OFFSET:        680 [pixels]
Y_OFFSET:        488 [pixels]
X_MAX:           1639 [pixels]
Y_MAX:           1447 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00722642000msufc0082.fits
SUN_POSTN:       233.15d {+15h 32m 36s}  -19.13d {-19d 07' 50"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.51d {+06h 22m 01s}  +18.80d {+18d 48' 13"}
MOON_DIST:       128.84 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.09,-31.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.80 [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:     Thu 17 Nov 16 09:55:28 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.914d {+19h 55m 39s} (J2000)
POINT_DEC:       -67.719d {-67d 43' 06"} (J2000)
ROLL:            285.226d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35466.58 SOD {09:51:06.58} UT,   82.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     501069083
X_OFFSET:        1067 [pixels]
Y_OFFSET:        787 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1227
Y_GRB_POS:       947
BINNING_INDEX:   1
IM_URL:          sw00722642000msuni0100.fits
SUN_POSTN:       233.15d {+15h 32m 36s}  -19.13d {-19d 07' 50"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.52d {+06h 22m 04s}  +18.80d {+18d 48' 13"}
MOON_DIST:       128.84 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.09,-31.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.80 [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:     Thu 17 Nov 16 09:55:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.914d {+19h 55m 39s} (J2000)
POINT_DEC:       -67.719d {-67d 43' 06"} (J2000)
ROLL:            285.226d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35466.58 SOD {09:51:06.58} UT,   82.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     501069083
X_OFFSET:        1067 [pixels]
Y_OFFSET:        787 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1227
Y_GRB_POS:       947
BINNING_INDEX:   1
IM_URL:          sw00722642000msuni0100.fits
SUN_POSTN:       233.15d {+15h 32m 36s}  -19.13d {-19d 07' 50"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.52d {+06h 22m 05s}  +18.80d {+18d 48' 13"}
MOON_DIST:       128.84 [deg]
MOON_ILLUM:      89 [%]
GAL_COORDS:      328.09,-31.01 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 10:02:34 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.924d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 10"} (J2000)
POINT_ROLL:      285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35679.27 SOD {09:54:39.27} UT,   295.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.663
N_STARS:         61
X_OFFSET:        747 [pixels]
Y_OFFSET:        467 [pixels]
X_MAX:           1706 [pixels]
Y_MAX:           1426 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00722642000msufc0295.fits
SUN_POSTN:       233.15d {+15h 32m 37s}  -19.13d {-19d 07' 54"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.59d {+06h 22m 22s}  +18.80d {+18d 48' 12"}
MOON_DIST:       128.85 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 10:02:51 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.924d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 10"} (J2000)
POINT_ROLL:      285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35679.27 SOD {09:54:39.27} UT,   295.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.663
N_STARS:         61
X_OFFSET:        747 [pixels]
Y_OFFSET:        467 [pixels]
X_MAX:           1706 [pixels]
Y_MAX:           1426 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00722642000msufc0295.fits
SUN_POSTN:       233.15d {+15h 32m 37s}  -19.13d {-19d 07' 55"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.60d {+06h 22m 23s}  +18.80d {+18d 48' 12"}
MOON_DIST:       128.85 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [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:     Thu 17 Nov 16 10:03:09 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     722642,   Seg_Num: 0
GRB_RA:          298.8244d {+19h 55m 17.85s} (J2000),
                 299.2408d {+19h 56m 57.79s} (current),
                 297.5836d {+19h 50m 20.06s} (1950)
GRB_DEC:         -67.7028d {-67d 42' 10.0"} (J2000),
                 -67.6572d {-67d 39' 25.9"} (current),
                 -67.8344d {-67d 50' 03.8"} (1950)
GRB_ERROR:       2.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35644.00 SOD {09:54:04.00} UT,   260.3 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       233.15d {+15h 32m 37s}  -19.13d {-19d 07' 55"}
SUN_DIST:         63.34 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.60d {+06h 22m 24s}  +18.80d {+18d 48' 12"}
MOON_DIST:       128.89 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.11,-30.98 [deg] galactic lon,lat of the burst
ECL_COORDS:      285.21,-45.78 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 10:03:58 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.924d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 10"} (J2000)
ROLL:            285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35679.27 SOD {09:54:39.27} UT,   295.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     501069296
X_OFFSET:        1067 [pixels]
Y_OFFSET:        787 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1227
Y_GRB_POS:       947
BINNING_INDEX:   1
IM_URL:          sw00722642000msuni0313.fits
SUN_POSTN:       233.15d {+15h 32m 37s}  -19.13d {-19d 07' 55"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.61d {+06h 22m 26s}  +18.80d {+18d 48' 12"}
MOON_DIST:       128.86 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [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:     Thu 17 Nov 16 10:04:22 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.924d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 10"} (J2000)
ROLL:            285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  35679.27 SOD {09:54:39.27} UT,   295.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     501069296
X_OFFSET:        1067 [pixels]
Y_OFFSET:        787 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1227
Y_GRB_POS:       947
BINNING_INDEX:   1
IM_URL:          sw00722642000msuni0313.fits
SUN_POSTN:       233.16d {+15h 32m 37s}  -19.13d {-19d 07' 56"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.61d {+06h 22m 27s}  +18.80d {+18d 48' 12"}
MOON_DIST:       128.86 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #20182
E. Troja (NASA/GSFC/UMCP), A. D'Ai (INAF-IASFPA), V. D'Elia (ASDC), P.A. Evans (U Leicester), H. A. Krimm (CRESST/NSF/USRA), K. L. Page (U Leicester), B. Sbarufatti (INAF-OAB/PSU) and M. H. Siegel (PSU) report on behalf of the Swift Team:
At 09:49:43 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 161117B (trigger=722642). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 298.855, -67.707 which is
```
   RA(J2000) = 19h 55m 25s
   Dec(J2000) = -67d 42' 23"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed am initial weak peak near the trigger time followed by stronger emission starting about 100 seconds later. The total duration is about 150 sec. The peak count rate was ~4500 counts/sec (15-350 keV), at ~135 sec after the trigger.
The XRT began observing the field at 09:50:58.0 UT, 74.4 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source with an enhanced position: RA, Dec 298.8244, -67.7029 which is equivalent to:
```
   RA(J2000)  = 19h 55m 17.85s
   Dec(J2000) = -67d 42' 10.6"
```
with an uncertainty of 2.1 arcseconds (radius, 90% containment). This location is 44 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (6.49 x 10^20 cm^-2, Willingale et al. 2013), with an excess column of 5.3 (+2.89/-2.47) x 10^21 cm^-2 (90% confidence).
The initial flux in the 2.5 s image was 4.69e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 82 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.10.
Burst Advocate for this burst is E. Troja (eleonora.troja AT 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:     Thu 17 Nov 16 10:10:36 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.923d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 11"} (J2000)
POINT_ROLL:      285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  36258.90 SOD {10:04:18.90} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.517
N_STARS:         190
X_OFFSET:        507 [pixels]
Y_OFFSET:        227 [pixels]
X_MAX:           1946 [pixels]
Y_MAX:           1666 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00722642000msufc0875.fits
SUN_POSTN:       233.16d {+15h 32m 38s}  -19.13d {-19d 08' 00"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.68d {+06h 22m 43s}  +18.80d {+18d 48' 11"}
MOON_DIST:       128.87 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 17 Nov 16 10:11:06 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.923d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 11"} (J2000)
POINT_ROLL:      285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  36258.90 SOD {10:04:18.90} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.517
N_STARS:         190
X_OFFSET:        507 [pixels]
Y_OFFSET:        227 [pixels]
X_MAX:           1946 [pixels]
Y_MAX:           1666 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00722642000msufc0875.fits
SUN_POSTN:       233.16d {+15h 32m 38s}  -19.13d {-19d 08' 00"}
SUN_DIST:         63.38 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.68d {+06h 22m 44s}  +18.80d {+18d 48' 11"}
MOON_DIST:       128.87 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [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:     Thu 17 Nov 16 10:12:14 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.923d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 11"} (J2000)
ROLL:            285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  36258.90 SOD {10:04:18.90} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     501069876
X_OFFSET:        1066 [pixels]
Y_OFFSET:        786 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1226
Y_GRB_POS:       946
BINNING_INDEX:   1
IM_URL:          sw00722642000msuni0893.fits
SUN_POSTN:       233.16d {+15h 32m 39s}  -19.13d {-19d 08' 00"}
SUN_DIST:         63.37 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.70d {+06h 22m 47s}  +18.80d {+18d 48' 11"}
MOON_DIST:       128.87 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [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:     Thu 17 Nov 16 10:12:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     722642,   Seg_Num: 0
POINT_RA:        298.923d {+19h 55m 42s} (J2000)
POINT_DEC:       -67.720d {-67d 43' 11"} (J2000)
ROLL:            285.218d
IMG_START_DATE:  17709 TJD;   322 DOY;   16/11/17
IMG_START_TIME:  36258.90 SOD {10:04:18.90} UT,   875.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     501069876
X_OFFSET:        1066 [pixels]
Y_OFFSET:        786 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1226
Y_GRB_POS:       946
BINNING_INDEX:   1
IM_URL:          sw00722642000msuni0893.fits
SUN_POSTN:       233.16d {+15h 32m 39s}  -19.13d {-19d 08' 00"}
SUN_DIST:         63.37 [deg]   Sun_angle= -4.4 [hr] (East of Sun)
MOON_POSTN:       95.70d {+06h 22m 48s}  +18.80d {+18d 48' 11"}
MOON_DIST:       128.87 [deg]
MOON_ILLUM:      88 [%]
GAL_COORDS:      328.09,-31.02 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      285.25,-45.81 [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:        All 4 attachments are included.

GCN Circular #20183
C. Guidorzi (U. Ferrara), S. Kobayashi, I.A. Steele (LJMU), C.G. Mundell (U. Bath), A. Gomboc (U. Nova Gorica) on behalf of a large collaboration report:
One of the LCO 1-m telescope units in Siding Springs began observing Swift GRB 161117B (Troja et al., GCN 20182) in the SDSS r filter on November 17, 10:28:49 UT (39 minutes since the GRB trigger time). We do not find any object within the XRT error circle down to the following limit:
```
Mid time from GRB     Exposure     Filter       Magnitude
(min)                  (s)
----------------------------------------------------------
45                    5x120        SDSS-R       > 21.2
----------------------------------------------------------
```
Calibration is done against nearby USNOB-1 stars.
GCN Circular #20186
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 787 s of XRT Photon Counting mode data and 1 UVOT images for GRB 161117B, 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 = 298.82508, -67.70256 which is equivalent to:
```
RA (J2000): 19h 55m 18.02s
Dec (J2000): -67d 42' 09.2"
```
with an uncertainty of 1.7 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #20189
T. N. Ukwatta (LANL), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), E. Troja (NASA/GSFC/UMCP), (i.e. the Swift-BAT team):
Using the data set from T-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 161117B (trigger #722642) (Troja, et al., GCN Circ. 20182). The BAT ground-calculated position is RA, Dec = 298.830, -67.681 deg which is
```
   RA(J2000)  =  19h 55m 19.1s 
   Dec(J2000) = -67d 40' 51.8" 
```
with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 43%.
The mask-weighted light curve shows a complex structure. The first set of peaks begins around T-10 sec, peaks at T+2 and fades by T+10 sec. The second set of peaks begins around T+92 sec, peaks at T+102 sec and fades nearly to background by T+115 sec. This is when the third set of peaks begins to rise, which peaks at T+T+135 sec and fades by T+160 sec. All of these peak structures have multiple sub-peaks. T90 (15-350 keV) is 152.51 +- 3.37 sec (estimated error including systematics).
The time-averaged spectrum from T-8.32 to T+157.44 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.39 +- 0.28, and Epeak of 37.5 +- 5.5 keV (chi squared 39.62 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 6.0 +- 0.2 x 10^-6 erg/cm2 and the 1-sec peak flux measured from T+133.80 sec in the 15-150 keV band is 6.0 +- 0.3 ph/cm2/sec. A fit to a simple power law gives a photon index of 2.14 +- 0.06 (chi squared 64.42 for 57 d.o.f.). 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/722642/BA/
GCN Circular #20191
F. E. Marshall (NASA/GSFC) and E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 161117B 84 s after the BAT trigger (Troja et al., GCN Circ. 20182). No optical afterglow consistent with the XRT position (Osborne et al. GCN Circ. 20186) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC            84          234          147         >21.1
u_FC               296          546          246         >20.3
white               84         1026          334         >21.4
v                  626          820           39         >18.1
b                  552          745           39         >19.6
u                  296          720          265         >20.3
w1                 676          870           39         >18.9
m2                 651          844           39         >19.9
w2                 602         1050           57         >19.6
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.10 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #20198
V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), T.G.R. Roegiers (PSU), L.M. McCauley (PSU), J.A. Kennea (PSU), B. Mingo (U. Leicester), A.P. Beardmore (U. Leicester) and E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift-XRT team:
We have analysed 5.9 ks of XRT data for GRB 161117B (Troja et al. GCN Circ. 20182), from 65 s to 206.7 ks after the BAT trigger. The data comprise 178 s in Windowed Timing (WT) mode (the first 7 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 20186).
The light curve shows an initial bright flare that is part of the prompt GRB emission. At T+95.1 s the decay can be modelled with a power-law of index alpha of 0.43 (+0.09, -0.07) before breaking at T+101 ks to a final decay with index alpha=6.7 (+1.3, -5.2).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.10 (+/-0.05). The best-fitting absorption column is 3.8 (+/-0.4) x 10^21 cm^-2, in excess of the Galactic value of 6.5 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 1.98 (+0.24, -0.23) and a best-fitting absorption column of 5.3 (+1.5, -1.3) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.2 x 10^-11 (6.8 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     5.3 (+1.5, -1.3) x 10^21 cm^-2
Galactic foreground: 6.5 x 10^20 cm^-2
Excess significance: 5.9 sigma
Photon index:	     1.98 (+0.24, -0.23)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00722642.
This circular is an official product of the Swift-XRT team.

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Jochen Greiner, last update: 20-Nov-2016 [Disclaimer]