Gamma-ray Burst 160917A

(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:     Sat 17 Sep 16 11:30:43 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     712505,   Seg_Num: 0
GRB_RA:          295.671d {+19h 42m 41s} (J2000),
                 295.797d {+19h 43m 11s} (current),
                 295.294d {+19h 41m 10s} (1950)
GRB_DEC:         +46.399d {+46d 23' 56"} (J2000),
                 +46.439d {+46d 26' 21"} (current),
                 +46.279d {+46d 16' 44"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       3337 [cnts]    Image_Peak=154 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       15302 [cnts]
BKG_TIME:        41407.12 SOD {11:30:07.12} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17648 TJD;   261 DOY;   16/09/17
GRB_TIME:        41419.34 SOD {11:30:19.34} UT
GRB_PHI:         176.88 [deg]
GRB_THETA:        41.30 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     29.25 [sigma]
IMAGE_SIGNIF:    8.62 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  -1  +0  +0 +32  +0 
SUN_POSTN:       175.41d {+11h 41m 40s}   +1.98d {+01d 59' 04"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.59d {+00h 18m 22s}   -0.03d {-00d 01' 36"}
MOON_DIST:        75.59 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      316.63, 65.73 [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 = 205.16,14.98 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=495804623).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:30:59 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      58
TRIGGER_NUM:     495804623
GRB_RA:          300.950d {+20h 03m 48s} (J2000),
                 301.061d {+20h 04m 15s} (current),
                 300.617d {+20h 02m 28s} (1950)
GRB_DEC:         +52.230d {+52d 13' 48"} (J2000),
                 +52.278d {+52d 16' 41"} (current),
                 +52.088d {+52d 05' 15"} (1950)
GRB_ERROR:       10.22 [deg radius, statistical only]
DATA_SIGNIF:     20.00 [sigma]
DATA_INTERVAL:   2.048 [sec]
GRB_DATE:        17648 TJD;   261 DOY;   16/09/17
GRB_TIME:        41419.29 SOD {11:30:19.29} UT
GRB_PHI:          27.00 [deg]
GRB_THETA:        44.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4153 (Gnd S/W Version number)
SUN_POSTN:       175.41d {+11h 41m 40s}   +1.98d {+01d 59' 04"}
SUN_DIST:        109.21 [deg]   Sun_angle= -8.4 [hr] (East of Sun)
MOON_POSTN:        4.59d {+00h 18m 22s}   -0.03d {-00d 01' 33"}
MOON_DIST:        74.20 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       86.55, 11.02 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      332.00, 69.10 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn160917479/quicklook/glg_lc_medres34_bn160917479.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_495804623.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=712505).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:30:48 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      49
TRIGGER_NUM:     495804623
GRB_RA:          303.050d {+20h 12m 12s} (J2000),
                 303.202d {+20h 12m 49s} (current),
                 302.594d {+20h 10m 23s} (1950)
GRB_DEC:         +38.317d {+38d 19' 00"} (J2000),
                 +38.368d {+38d 22' 03"} (current),
                 +38.166d {+38d 09' 57"} (1950)
GRB_ERROR:       8.28 [deg radius, statistical plus systematic]
GRB_INTEN:       298 [cnts/sec]
DATA_SIGNIF:     15.80 [sigma]
INTEG_TIME:      1.024 [sec]
GRB_DATE:        17648 TJD;   261 DOY;   16/09/17
GRB_TIME:        41419.29 SOD {11:30:19.29} UT
GRB_PHI:          47.00 [deg]
GRB_THETA:        40.00 [deg]
DATA_TIME_SCALE: 1.0240 [sec]
HARD_RATIO:      0.46
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      65%  GRB
2nd_MOST_LIKELY:  29%  Cyg X-1
DETECTORS:       1,1,0, 0,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       175.41d {+11h 41m 40s}   +1.98d {+01d 59' 04"}
SUN_DIST:        117.30 [deg]   Sun_angle= -8.5 [hr] (East of Sun)
MOON_POSTN:        4.59d {+00h 18m 22s}   -0.03d {-00d 01' 35"}
MOON_DIST:        67.97 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       75.45,  2.39 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      320.18, 56.14 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn160917479/quicklook/glg_lc_medres34_bn160917479.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 189.80,-22.57 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=712505).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:31:30 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      0
TRIGGER_NUM:     495804623
GRB_RA:          326.810d {+21h 47m 14s} (J2000),
                 326.981d {+21h 47m 55s} (current),
                 326.300d {+21h 45m 12s} (1950)
GRB_DEC:         +40.420d {+40d 25' 12"} (J2000),
                 +40.498d {+40d 29' 53"} (current),
                 +40.188d {+40d 11' 16"} (1950)
GRB_ERROR:       4.09 [deg radius, statistical only]
DATA_SIGNIF:     17.60 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        17648 TJD;   261 DOY;   16/09/17
GRB_TIME:        41419.29 SOD {11:30:19.29} UT
GRB_PHI:          33.00 [deg]
GRB_THETA:        23.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41531 (Gnd S/W Version number)
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 59' 03"}
SUN_DIST:        130.23 [deg]   Sun_angle= -10.1 [hr] (East of Sun)
MOON_POSTN:        4.60d {+00h 18m 24s}   -0.02d {-00d 01' 27"}
MOON_DIST:        52.98 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       89.11,-10.06 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      348.95, 49.52 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn160917479/quicklook/glg_lc_medres34_bn160917479.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_495804623.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the INTEGRAL_SPIACS event (trignum=7567).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:32:15 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      3
TRIGGER_NUM:     495804623
GRB_RA:          302.890d {+20h 11m 34s} (J2000),
                 303.015d {+20h 12m 04s} (current),
                 302.516d {+20h 10m 04s} (1950)
GRB_DEC:         +48.810d {+48d 48' 36"} (J2000),
                 +48.861d {+48d 51' 38"} (current),
                 +48.660d {+48d 39' 34"} (1950)
GRB_ERROR:       4.00 [deg radius, statistical only]
DATA_SIGNIF:     23.10 [sigma]
DATA_INTERVAL:   17.408 [sec]
GRB_DATE:        17648 TJD;   261 DOY;   16/09/17
GRB_TIME:        41419.29 SOD {11:30:19.29} UT
GRB_PHI:          32.00 [deg]
GRB_THETA:        42.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41531 (Gnd S/W Version number)
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 59' 03"}
SUN_DIST:        112.03 [deg]   Sun_angle= -8.5 [hr] (East of Sun)
MOON_POSTN:        4.61d {+00h 18m 25s}   -0.02d {-00d 01' 18"}
MOON_DIST:        71.78 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       84.24,  8.19 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      329.81, 65.56 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn160917479/quicklook/glg_lc_medres34_bn160917479.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_495804623.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(2.0<100sec) coincident with the INTEGRAL_SPIACS event (trignum=7567).

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Sat 17 Sep 16 11:31:17 UT
NOTICE_TYPE:    INTEGRAL SPI ACS Trigger
TRIGGER_NUM:    7567,   Sub_Num: 0
GRB_INTEN:      10.80 [sigma]  
GRB_TIME:       41417.16 SOD {11:30:17.16} UT
GRB_DATE:       17648 TJD;   261 DOY;   16/09/17
COMMENTS:       INTEGRAL SPI_ACS GRB Trigger.
COMMENTS:       Time_Scale=2.0000 and Time_Error=1.0000.
COMMENTS:
COMMENTS:       NOTE: This SPIACS event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=495804623).
COMMENTS:
COMMENTS:       The SPIACS lightcurve can be found at:
COMMENTS:       ftp://isdcarc.unige.ch/arc/FTP/ibas/spiacs/2016-09/2016-09-17T11-30-17.1266-19706-43920-0.lc

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:32:27 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     712505,   Seg_Num: 0
GRB_RA:          295.6708d {+19h 42m 40.99s} (J2000),
                 295.7968d {+19h 43m 11.24s} (current),
                 295.2937d {+19h 41m 10.48s} (1950)
GRB_DEC:         +46.4037d {+46d 24' 13.3"} (J2000),
                 +46.4441d {+46d 26' 38.7"} (current),
                 +46.2839d {+46d 17' 02.1"} (1950)
GRB_ERROR:       5.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       7.72e-10 [erg/cm2/sec]
GRB_SIGNIF:      4.69 [sigma]
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41512.93 SOD {11:31:52.93} UT,   93.6 [sec] since BAT Trigger Time
TAM[0-3]:        327.67 237.21 261.63 243.52
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 59' 02"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.61d {+00h 18m 26s}   -0.02d {-00d 01' 15"}
MOON_DIST:        75.59 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the burst
ECL_COORDS:      316.63, 65.74 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.29 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:32:45 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     712505,   Seg_Num: 0
GRB_RA:          295.6708d {+19h 42m 40.9s} (J2000),
                 295.7968d {+19h 43m 11.2s} (current),
                 295.2937d {+19h 41m 10.4s} (1950)
GRB_DEC:         +46.4037d {+46d 24' 13.3"} (J2000),
                 +46.4441d {+46d 26' 38.7"} (current),
                 +46.2839d {+46d 17' 02.1"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       22 [cnts]
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41512.93 SOD {11:31:52.93} UT,   93.6 [sec] since BAT Trigger Time
CENTROID_X:      304.80,  raw= 305  [pixels]
CENTROID_Y:      292.09,  raw= 292  [pixels]
ROLL:            294.21 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -13.43
GRB_POS_XRT_Z:   -1.17
IMAGE_URL:       sw00712505000msxps_rw.img
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 59' 02"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.61d {+00h 18m 26s}   -0.02d {-00d 01' 12"}
MOON_DIST:        75.59 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the burst
ECL_COORDS:      316.63, 65.74 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:32:38 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     712505,   Seg_Num: 0
GRB_RA:          295.6708d {+19h 42m 40.9s} (J2000),
                 295.7968d {+19h 43m 11.2s} (current),
                 295.2937d {+19h 41m 10.4s} (1950)
GRB_DEC:         +46.4037d {+46d 24' 13.3"} (J2000),
                 +46.4441d {+46d 26' 38.7"} (current),
                 +46.2839d {+46d 17' 02.1"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       22 [cnts]
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41512.93 SOD {11:31:52.93} UT,   93.6 [sec] since BAT Trigger Time
CENTROID_X:      304.80,  raw= 305  [pixels]
CENTROID_Y:      292.09,  raw= 292  [pixels]
ROLL:            294.21 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -13.43
GRB_POS_XRT_Z:   -1.17
IMAGE_URL:       sw00712505000msxps_rw.img
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 59' 02"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.61d {+00h 18m 26s}   -0.02d {-00d 01' 13"}
MOON_DIST:        75.59 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the burst
ECL_COORDS:      316.63, 65.74 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:34:20 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     712505,   Seg_Num: 0
GRB_RA:          295.671d {+19h 42m 41s} (J2000),
                 295.797d {+19h 43m 11s} (current),
                 295.294d {+19h 41m 10s} (1950)
GRB_DEC:         +46.399d {+46d 23' 56"} (J2000),
                 +46.439d {+46d 26' 21"} (current),
                 +46.279d {+46d 16' 44"} (1950)
GRB_DATE:        17648 TJD;   261 DOY;   16/09/17
GRB_TIME:        41419.34 SOD {11:30:19.34} UT
TRIGGER_INDEX:   155
GRB_PHI:         176.88 [deg]
GRB_THETA:        41.30 [deg]
DELTA_TIME:      57.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     29.25 [sigma]
IMAGE_SIGNIF:    8.62 [sigma]
LC_URL:          sw00712505000msb.lc
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 59' 01"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.63d {+00h 18m 30s}   -0.02d {-00d 00' 53"}
MOON_DIST:        75.60 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      316.63, 65.73 [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 = 205.16,14.98 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:35:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     712505,   Seg_Num: 0
POINT_RA:        295.669d {+19h 42m 41s} (J2000)
POINT_DEC:       +46.400d {+46d 24' 01"} (J2000)
POINT_ROLL:      294.212d
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41518.84 SOD {11:31:58.84} UT,   99.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.682
N_STARS:         190
X_OFFSET:        464 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1423 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00712505000msufc0099.fits
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 58' 60"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.63d {+00h 18m 32s}   -0.01d {-00d 00' 44"}
MOON_DIST:        75.60 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      316.63, 65.74 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:34:47 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     712505,   Seg_Num: 0
POINT_RA:        295.669d {+19h 42m 41s} (J2000)
POINT_DEC:       +46.400d {+46d 24' 01"} (J2000)
POINT_ROLL:      294.212d
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41518.84 SOD {11:31:58.84} UT,   99.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.682
N_STARS:         190
X_OFFSET:        464 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1423 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00712505000msufc0099.fits
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 59' 00"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.63d {+00h 18m 31s}   -0.01d {-00d 00' 48"}
MOON_DIST:        75.60 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      316.63, 65.74 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 17 Sep 16 11:36:27 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     712505,   Seg_Num: 0
POINT_RA:        295.669d {+19h 42m 41s} (J2000)
POINT_DEC:       +46.400d {+46d 24' 01"} (J2000)
ROLL:            294.212d
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41518.84 SOD {11:31:58.84} UT,   99.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     495804735
X_OFFSET:        807 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       967
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00712505000msuni0116.fits
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 58' 59"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.65d {+00h 18m 35s}   -0.01d {-00d 00' 28"}
MOON_DIST:        75.61 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      316.63, 65.74 [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:     Sat 17 Sep 16 11:36:37 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     712505,   Seg_Num: 0
POINT_RA:        295.669d {+19h 42m 41s} (J2000)
POINT_DEC:       +46.400d {+46d 24' 01"} (J2000)
ROLL:            294.212d
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41518.84 SOD {11:31:58.84} UT,   99.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     495804735
X_OFFSET:        807 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       967
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00712505000msuni0116.fits
SUN_POSTN:       175.42d {+11h 41m 40s}   +1.98d {+01d 58' 58"}
SUN_DIST:        108.86 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.65d {+00h 18m 35s}   -0.01d {-00d 00' 26"}
MOON_DIST:        75.61 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      316.63, 65.74 [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_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #19926
J. L. Racusin (NASA/GSFC), S. D. Barthelmy (GSFC), J. R. Cummings (NASA/UMBC), J. A. Kennea (PSU), D. Malesani (DARK/NBI and DTU Space), F. E. Marshall (NASA/GSFC), B. Mingo (U Leicester), K. L. Page (U Leicester) and D. M. Palmer (LANL) report on behalf of the Swift Team:
At 11:30:19 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 160917A (trigger=712505). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 295.671, +46.399 which is
```
   RA(J2000)  =  19h 42m 41s
   Dec(J2000) = +46d 23' 56"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows several overlapping peaks with a total duration of about 25 sec. The peak count rate was ~2300 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 11:31:52.9 UT, 93.6 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 295.66805, 46.40321 which is equivalent to:
```
   RA(J2000)  = 19h 42m 40.33s
   Dec(J2000) = +46d 24' 11.6"
```
with an uncertainty of 4.2 arcseconds (radius, 90% containment). This location is 16 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. We cannot determine whether the source is fading at the present time. No spectrum from the promptly downlinked event data is yet available to determine the column density.
The initial flux in the 2.5 s image was 7.72e-10 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 125 seconds with the White filter starting 99 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. Results from the list of sources generated on-board are not available at this time. No correction has been made for the expected extinction corresponding to E(B-V) of 0.16.
Burst Advocate for this burst is J. L. Racusin (judith.racusin 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:     Sat 17 Sep 16 11:47:59 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     712505,   Seg_Num: 0
GRB_RA:          295.6680d {+19h 42m 40.32s} (J2000),
                 295.7940d {+19h 43m 10.57s} (current),
                 295.2909d {+19h 41m 09.81s} (1950)
GRB_DEC:         +46.4032d {+46d 24' 11.5"} (J2000),
                 +46.4436d {+46d 26' 36.9"} (current),
                 +46.2834d {+46d 17' 00.3"} (1950)
GRB_ERROR:       4.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17648 TJD;   261 DOY;   16/09/17
IMG_START_TIME:  41564.00 SOD {11:32:44.00} UT,   144.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       175.43d {+11h 41m 42s}   +1.98d {+01d 58' 47"}
SUN_DIST:        108.85 [deg]   Sun_angle= -8.0 [hr] (East of Sun)
MOON_POSTN:        4.76d {+00h 19m 02s}   +0.03d {+00d 01' 46"}
MOON_DIST:        75.66 [deg]
MOON_ILLUM:      99 [%]
GAL_COORDS:       79.66, 11.20 [deg] galactic lon,lat of the burst
ECL_COORDS:      316.63, 65.74 [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:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.11% < P(seren) < 0.58%.

GCN Circular #19927
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 77 s of XRT Photon Counting mode data and 1 UVOT images for GRB 160917A, 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 = 295.66637, +46.40368 which is equivalent to:
```
RA (J2000): 19h 42m 39.93s
Dec (J2000): +46d 24' 13.2"
```
with an uncertainty of 2.5 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 #19928
A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), Z. Cano (IAA-CSIC) & F. Aceituno (IAA-CSIC) report on behalf of a larger collaboration:
We observed the field of GRB 160917A (Racusin et al.; GCN Circ. 19926) with the 1.5-m OSN telescope in Granada, Spain. We began observing at 19:08:34 UT (7.64 hours after the GRB onset), and obtained 14x300s images in I-band. In our coadded image, we find no new source in the refined XRT error circle (Evans et al; GCN Circ. 19927) down to a a 3-sigma limit of I(Vega) = 22.6. The calibration was performed using a nearby star in the USNO B1 catalog, and the upper limit corresponds to an isolated point source in our co-added image.
GCN Circular #19929
A. Volnova (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva (IKI), I. Korobtsev (ISTP) report on behalf of larger GRB follow-up collaboration:
We observed the field of the GRB 160917A (Racusin et al. GCN 19926) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Sep., 17 (UT) 14:30:30. We obtained several images in R-filter. We detected the optical source within enhanced XRT error circle (Evans et al., GCN 19927) in coordinates (J2000) 19 42 39.81 +46 24 12.1 with uncertainities of 0.4 arcsec in both coordinates. Preliminary photometry of the afterglow is following
```
Date        UT start   t-T0      Filter Exp.   OT        UL (3 sigma)
                        (mid, days)       (s)

2016-09-17  14:30:30   0.14601    R     120*30 20.60 +/- 0.20  22.9
```
Photometry is based on nearby USNO-B1.0 stars
```
ID             RA           Dec        R2

1 1363-0324591 19:42:38.95 +46:23:53.8 16.62
2 1364-0326339 19:42:40.68 +46:24:37.0 17.40
3 1363-0324630 19:42:42.78 +46:23:28.7 17.05
```
We suggest the source as optical afterglow of GRB 160917A.
The finding chart can be found at http://grb.rssi.ru/GRB160917A/160917A_Mondy_fc.png
GCN Circular #19930
S.L. Gibson (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), D.N. Burrows (PSU), T.G.R. Roegiers (PSU), L.M. McCauley (PSU) and J.L. Racusin report on behalf of the Swift-XRT team:
We have analysed 6.2 ks of XRT data for GRB 160917A (Racusin et al. GCN Circ. 19926), from 80 s to 17.4 ks after the BAT trigger. The data comprise 43 s in Windowed Timing (WT) mode (the first 9 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 Evans et al. (GCN Circ. 19927).
The light curve can be modelled with a power-law decay with a decay index of alpha=1.243 (+0.030, -0.029).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.81 (+0.22, -0.21). The best-fitting absorption column is 2.8 (+1.1, -0.9) x 10^21 cm^-2, in excess of the Galactic value of 1.7 x 10^21 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.1 x 10^-11 (5.5 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     2.8 (+1.1, -0.9) x 10^21 cm^-2
Galactic foreground: 1.7 x 10^21 cm^-2
Excess significance: 2.0 sigma
Photon index:	     1.81 (+0.22, -0.21)
```
If the light curve continues to decay with a power-law decay index of 1.243, the count rate at T+24 hours will be 2.8 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.1 x 10^-13 (1.5 x 10^-13) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00712505.
This circular is an official product of the Swift-XRT team.
GCN Circular #19931
N. P. M. Kuin (UCL-MSSL) and J. L. Racusin (NASA/GSFC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 160917A 100 s after the BAT trigger (Racusin et al., GCN Circ. 19926). The refined XRT position (Evans et al. GCN Circ. 19927) is close to a bright star. However, a faint GRB candidate has been found at an offset of 6.5 arcsec to the south east from the bright star in the u exposures. The UVOT candidate position is: RA, Dec = 295.66687, 46.40368 (J2000) which is :
```
RA = 19:42:40.049
Dec = +46:24:13.25
```
with an estimated accuracy of 1.5 arcsec.
Preliminary detections using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)           Mag

white              100          224          123          >21.01
b                 4222         4422          100          >20.64
u                 4017         5545          146           20.47 +- 0.36
v                 3402         5038          200          >19.77
uvw1              3812         5448          200          >20.16
uvm2              3606         5242          100          >19.97
uvw2              4633         4833          200          >19.70
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.16 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #19932
P Veres (UAH), A von Kienlin (MPE) and C Meegan (UAH) report on behalf of the Fermi GBM Team:
"At 11:30:19.286 UT on 17 September 2016, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 160917A (trigger 495804623 / 160917479). which was also detected by the Swift/BAT =E2=80=8B =E2=80=8B (Racusin et al., GCN 19926). =E2=80=8B =E2=80=8B The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight at the GBM trigger time is 46 degrees.
The GBM light curve consists of a single peak with a duration (T90) of about 47 s (50-300 keV). The time-averaged spectrum from T0 to T0+14.1 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.00 +/- 0.05 and the cutoff energy, parameterized as Epeak, is 1604 +/- 357 keV.
The event fluence (10-1000 keV) in this time interval is (7.2 +/- 0.3)E-6 erg/cm^2. The 1-sec peak photon flux measured starting from T0 in the 10-1000 keV band is 5.1 +/- 0.2 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #19933
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), Jes=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels (GSFC), Harvey Moseley (GSFC), John Capone (UMD), V. Zach Golkhou (ASU), and Vicki Toy (UMD) report:
We observed the field of GRB 160917A (Racusin, et al., GCN 19926) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional on Sierra San Pedro M=E1rtir from 2016/09 18.12 to 2016/09 18.36 UTC (15.39 to 21.08 hours after the BAT trigger), obtaining a total of 3.72 hours exposure in the r and i bands and 1.63 hours exposure in the Z, Y, J, and H bands.
For a source within the Swift-XRT error circle (Evans et al., GCN 19927), in comparison with the USNO-B1 and 2MASS catalogs, we obtain the following upper limits (3-sigma):
```
  r > 24.31
  i > 24.28
  Z > 23.20
  Y > 22.90
  J > 22.57
  H > 22.20
```
These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB.
We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedro M=E1rtir.
GCN Circular #19934
H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), N. Gehrels (GSFC), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (i.e. the Swift-BAT team):
Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 160917A (trigger #712505) (Racusin, et al., GCN Circ. 19926). The BAT ground-calculated position is RA, Dec = 295.652, 46.400 deg which is
```
   RA(J2000)  =  19h 42m 36.4s
   Dec(J2000) = +46d 23' 59.3"
```
with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 43%.
The mask-weighted light curve shows an initial bright peak about 1 second long with some structure on finer time scales, and variable emission for another 30 seconds. Another weak peak occurs from T+50 to T+90 seconds. T90 (15-350 keV) is 16 +- 2 sec (estimated error including systematics).
The time-averaged spectrum from T-0.34 to T+15.31 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 0.89 +- 0.15. The fluence in the 15-150 keV band is 1.3 +- 0.1 x 10^-06 erg/cm2. The 1-sec peak photon flux measured from T-0.01 sec in the 15-150 keV band is 2.2 +- 0.3 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/712505/BA/
GCN Circular #19936
A. Volnova (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva (IKI), I. Korobtsev (ISTP) report on behalf of larger GRB follow-up collaboration:
We observed the field of the GRB 160917A (Racusin et al. GCN 19926) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Sep., 18 (UT) 15:25:21. We obtained several images in R-filter. We do not detect the optical source reported as afterglow candidate (Volnova et al. GCN 19929; Kuin et al. GCN 19931). Preliminary photometry of the field is following
```
Date        UT start   t-T0      Filter Exp.   OT     UL (3 sigma)
                        (mid, days)       (s)

2016-09-18  15:25:21   1.18522    R     60*60  n/d    22.0
```
Photometry is based on nearby USNO-B1.0 stars used in GCN circ. 19929. In comparison with our previous observation (Volnova et al. GCN 19929) the source is not visible up to 22.0 mag. The source faded between two epochs on at least 1.4 magnitudes and it is most probably the afterglow of GRB 160917A. Our observation is compatible with more deep RATIR observation in r-filter (Butler et al. GCN 19933).
GCN Circular #19942
V. Bhalerao (IUCAA), V. Kumar (IUCAA), D. Bhattacharya (IUCAA), A. R. Rao (TIFR), S. Vadawale (PRL) report on behalf of the Astrosat CZTI collaboration:
Analysis of Astrosat data showed the CZTI detection of GRB160917A (Swift BAT detection: S.Barthelmy et al., GCN Circ. 19926).
The source was clearly detected in the 40-200 keV energy range. The light curve shows a single peak at 11:30:25.0 UT, 6 seconds after Swift Trigger at 11:30:19.0 UT. The peak count rate was 116.0 counts/sec above the background (four quadrants summed together), with a total of 1008.0 counts. The local mean background count rate was 327.0 counts/sec. Using cumulative rates, we measure a T90 of 21 sec.
CZTI GRB detections are reported regularly on the payload site at http://astrosat.iucaa.in/czti/?q=grb . CZTI is built by a TIFR-led consortium of institutes across India, including VSSC, ISAC, IUCAA, SAC and PRL. The Indian Space Research Organisation funded, managed and facilitated the project.
GCN Circular #19951
K. P. Mooley (Hintze Fellow, Oxford), T. D. Staley, R. P. Fender (Oxford), G. E. Anderson (Curtin), T. Cantwell (Manchester), D. Titterington, S. H. Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods, P. Scott (Cambridge), K. Grainge, A. Scaife (Manchester)
The AMI Large Array robotically triggered on the Swift alert for GRB 160917A (Racusin et al., GCN 19926) as part of the 4pisky program, and subsequent follow up observations were obtained up to 10 days post-burst. Our observations at 15 GHz on 2016 Sep 17.65, Sep 20.87, and Sep 24.87 (UT) do not reveal any radio source at the XRT location (Evans et al., GCN 19927), with 3sigma upper limits of 150 uJy, 84 uJy, and 90 uJy respectively.
We thank the AMI staff for scheduling these observations. The AMI-GRB database is a log of all GRB follow up observations with the AMI, and is available at http://4pisky.org/ami-grb/.
GCN Circular #19990
N.L.Dzhioeva,V.V.Bogomolov, S.I.Svertilov, A.M.Amelushkin, V.O.Barinova, M.I.Panasyuk, A.V.Bogomolov, A.F.Iyudin, V.V.Kalegaev, D.Nguen, V.L. Petrov, I.V.Yashin, P.S.Kazarian Physics Department, Skobel`tsyn Institute of Nuclear Physics, Moscow State
V. Lipunov, E.S. Gorbovskoy, N.Tyurina, D.Kuvshinov Lomonosov Moscow State University, Sternberg Astronomical Institute
I. Park, J. Lee, S. Jeong Department of Physics, Sungkyunkwan University, Seobu-ro, Jangangu, Suwonsi, Korea
At 11:30:20 UT on 17 Sep 2016, the Lomonosov BDRG Gamma-ray Burst Monitor (http://lomonosov.sinp.msu.ru/en/scientific-equipment-2/bdrg ) triggered GRB 160917A (J. L. Racusin, GCN 19962). GRB 160917A has several peaks LC, total duration 25s, the energy range 70-1000 keV. More information will be available at: http://lomonosov.sinp.msu.ru/category/results/observation-gamma-ray-bursts This Notice was ground-generated. The message may be cited.

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Jochen Greiner, last update: 05-Oct-2016 [Disclaimer]