Gamma-ray Burst 161129A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:11:54 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     724438,   Seg_Num: 0
GRB_RA:          316.193d {+21h 04m 46s} (J2000),
                 316.369d {+21h 05m 28s} (current),
                 315.673d {+21h 02m 42s} (1950)
GRB_DEC:         +32.125d {+32d 07' 30"} (J2000),
                 +32.193d {+32d 11' 35"} (current),
                 +31.925d {+31d 55' 30"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       382 [cnts]    Image_Peak=65 [image_cnts]
TRIGGER_DUR:     0.032 [sec] 
TRIGGER_INDEX:   10318     E_range: 25-100 keV
BKG_INTEN:       20505 [cnts]
BKG_TIME:        25886.76 SOD {07:11:26.76} UT
BKG_DUR:         8 [sec]
GRB_DATE:        17721 TJD;   334 DOY;   16/11/29
GRB_TIME:        25899.88 SOD {07:11:39.88} UT
GRB_PHI:          -9.00 [deg]
GRB_THETA:        36.43 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     32.44 [sigma]
IMAGE_SIGNIF:    8.73 [sigma]
MERIT_PARAMS:     +1  +0  +0  -5  +2  -1  +0  +1  -6  +0 
SUN_POSTN:       245.70d {+16h 22m 49s}  -21.56d {-21d 33' 31"}
SUN_DIST:         86.28 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.25d {+16h 17m 00s}  -16.30d {-16d 18' 07"}
MOON_DIST:        84.27 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.02, -9.89 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      331.90, 46.14 [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 = 168.07,-19.79 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=502096303).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:12:17 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      57
TRIGGER_NUM:     502096303
GRB_RA:          327.690d {+21h 50m 46s} (J2000),
                 327.861d {+21h 51m 27s} (current),
                 327.185d {+21h 48m 44s} (1950)
GRB_DEC:         +42.180d {+42d 10' 48"} (J2000),
                 +42.260d {+42d 15' 35"} (current),
                 +41.945d {+41d 56' 43"} (1950)
GRB_ERROR:       12.04 [deg radius, statistical only]
DATA_SIGNIF:     8.70 [sigma]
DATA_INTERVAL:   0.064 [sec]
GRB_DATE:        17721 TJD;   334 DOY;   16/11/29
GRB_TIME:        25899.96 SOD {07:11:39.96} UT
GRB_PHI:         263.00 [deg]
GRB_THETA:        85.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4153 (Gnd S/W Version number)
SUN_POSTN:       245.70d {+16h 22m 49s}  -21.56d {-21d 33' 31"}
SUN_DIST:         98.81 [deg]   Sun_angle= -5.5 [hr] (East of Sun)
MOON_POSTN:      244.25d {+16h 17m 01s}  -16.30d {-16d 18' 09"}
MOON_DIST:        96.30 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       90.77, -9.14 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      351.26, 50.68 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn161129300/quicklook/glg_lc_medres34_bn161129300.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_502096303.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=724438).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:12:09 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      45
TRIGGER_NUM:     502096303
GRB_RA:          315.967d {+21h 03m 52s} (J2000),
                 316.147d {+21h 04m 35s} (current),
                 315.435d {+21h 01m 44s} (1950)
GRB_DEC:         +29.333d {+29d 19' 60"} (J2000),
                 +29.401d {+29d 24' 04"} (current),
                 +29.134d {+29d 08' 03"} (1950)
GRB_ERROR:       20.55 [deg radius, statistical plus systematic]
GRB_INTEN:       650 [cnts/sec]
DATA_SIGNIF:     6.40 [sigma]
INTEG_TIME:      0.064 [sec]
GRB_DATE:        17721 TJD;   334 DOY;   16/11/29
GRB_TIME:        25899.96 SOD {07:11:39.96} UT
GRB_PHI:         279.00 [deg]
GRB_THETA:        85.00 [deg]
DATA_TIME_SCALE: 0.0640 [sec]
HARD_RATIO:      1.06
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      95%  GRB
2nd_MOST_LIKELY:   1%  Generic SGR
DETECTORS:       0,0,0, 0,1,0, 0,0,1, 0,0,0, 0,0,
SUN_POSTN:       245.70d {+16h 22m 49s}  -21.56d {-21d 33' 31"}
SUN_DIST:         84.79 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.25d {+16h 17m 01s}  -16.30d {-16d 18' 08"}
MOON_DIST:        82.99 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       74.74,-11.56 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      330.05, 43.67 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn161129300/quicklook/glg_lc_medres34_bn161129300.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 212.92,24.63 [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=724438).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:12:39 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      85
TRIGGER_NUM:     502096303
GRB_RA:          330.100d {+22h 00m 24s} (J2000),
                 330.300d {+22h 01m 12s} (current),
                 329.510d {+21h 58m 02s} (1950)
GRB_DEC:         +19.783d {+19d 46' 60"} (J2000),
                 +19.865d {+19d 51' 54"} (current),
                 +19.543d {+19d 32' 34"} (1950)
GRB_ERROR:       9.65 [deg radius, statistical plus systematic]
GRB_INTEN:       303 [cnts/sec]
DATA_SIGNIF:     12.80 [sigma]
INTEG_TIME:      1.024 [sec]
GRB_DATE:        17721 TJD;   334 DOY;   16/11/29
GRB_TIME:        25899.96 SOD {07:11:39.96} UT
GRB_PHI:         279.00 [deg]
GRB_THETA:        70.00 [deg]
DATA_TIME_SCALE: 1.0240 [sec]
HARD_RATIO:      0.81
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      92%  GRB
2nd_MOST_LIKELY:   5%  Cyg X-1
DETECTORS:       0,0,0, 0,1,0, 0,0,1, 0,0,0, 0,0,
SUN_POSTN:       245.70d {+16h 22m 49s}  -21.56d {-21d 33' 32"}
SUN_DIST:         92.43 [deg]   Sun_angle= -5.6 [hr] (East of Sun)
MOON_POSTN:      244.26d {+16h 17m 02s}  -16.30d {-16d 18' 11"}
MOON_DIST:        91.90 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       76.90,-27.42 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      340.07, 29.81 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2016/bn161129300/quicklook/glg_lc_medres34_bn161129300.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 212.92,24.63 [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=724438).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:13:07 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.217d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.130d {+32d 07' 47"} (J2000)
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  25981.89 SOD {07:13:01.89} UT,   82.0 [sec] since BAT Trigger Time
COUNTS:          1    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        0    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:15:26 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     724438,   Seg_Num: 0
GRB_RA:          316.193d {+21h 04m 46s} (J2000),
                 316.369d {+21h 05m 28s} (current),
                 315.673d {+21h 02m 42s} (1950)
GRB_DEC:         +32.125d {+32d 07' 30"} (J2000),
                 +32.193d {+32d 11' 35"} (current),
                 +31.925d {+31d 55' 30"} (1950)
GRB_DATE:        17721 TJD;   334 DOY;   16/11/29
GRB_TIME:        25899.91 SOD {07:11:39.91} UT
TRIGGER_INDEX:   10318
GRB_PHI:          -9.00 [deg]
GRB_THETA:        36.43 [deg]
DELTA_TIME:      -34.00 [sec]
TRIGGER_DUR:     0.032 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     32.44 [sigma]
IMAGE_SIGNIF:    8.73 [sigma]
LC_URL:          sw00724438000msb.lc
SUN_POSTN:       245.71d {+16h 22m 50s}  -21.56d {-21d 33' 33"}
SUN_DIST:         86.28 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.28d {+16h 17m 07s}  -16.31d {-16d 18' 25"}
MOON_DIST:        84.25 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.02, -9.89 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      331.90, 46.14 [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 = 168.07,-19.79 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:16:12 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.217d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.130d {+32d 07' 47"} (J2000)
POINT_ROLL:      241.554d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  25986.11 SOD {07:13:06.11} UT,   86.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.001
N_STARS:         190
X_OFFSET:        628 [pixels]
Y_OFFSET:        535 [pixels]
X_MAX:           1587 [pixels]
Y_MAX:           1494 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    8
SL_URL:          sw00724438000msufc0086.fits
SUN_POSTN:       245.71d {+16h 22m 50s}  -21.56d {-21d 33' 33"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.29d {+16h 17m 09s}  -16.31d {-16d 18' 28"}
MOON_DIST:        84.26 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:16:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.217d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.130d {+32d 07' 47"} (J2000)
POINT_ROLL:      241.554d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  25986.11 SOD {07:13:06.11} UT,   86.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.001
N_STARS:         190
X_OFFSET:        628 [pixels]
Y_OFFSET:        535 [pixels]
X_MAX:           1587 [pixels]
Y_MAX:           1494 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    8
SL_URL:          sw00724438000msufc0086.fits
SUN_POSTN:       245.71d {+16h 22m 50s}  -21.56d {-21d 33' 33"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.29d {+16h 17m 10s}  -16.31d {-16d 18' 31"}
MOON_DIST:        84.26 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [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:     Tue 29 Nov 16 07:17:39 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.217d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.130d {+32d 07' 47"} (J2000)
ROLL:            241.554d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  25986.11 SOD {07:13:06.11} UT,   86.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     502096403
X_OFFSET:        947 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1107
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00724438000msuni0104.fits
SUN_POSTN:       245.71d {+16h 22m 50s}  -21.56d {-21d 33' 34"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.30d {+16h 17m 12s}  -16.31d {-16d 18' 36"}
MOON_DIST:        84.26 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [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:     Tue 29 Nov 16 07:17:56 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.217d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.130d {+32d 07' 47"} (J2000)
ROLL:            241.554d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  25986.11 SOD {07:13:06.11} UT,   86.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     502096403
X_OFFSET:        947 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1107
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00724438000msuni0104.fits
SUN_POSTN:       245.71d {+16h 22m 50s}  -21.56d {-21d 33' 34"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.30d {+16h 17m 13s}  -16.31d {-16d 18' 37"}
MOON_DIST:        84.25 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [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_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:17:58 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     724438,   Seg_Num: 0
GRB_RA:          316.2287d {+21h 04m 54.88s} (J2000),
                 316.4045d {+21h 05m 37.07s} (current),
                 315.7093d {+21h 02m 50.22s} (1950)
GRB_DEC:         +32.1357d {+32d 08' 08.5"} (J2000),
                 +32.2038d {+32d 12' 13.6"} (current),
                 +31.9355d {+31d 56' 07.9"} (1950)
GRB_ERROR:       3.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  25990.00 SOD {07:13:10.00} UT,   90.1 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       245.71d {+16h 22m 50s}  -21.56d {-21d 33' 34"}
SUN_DIST:         86.31 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.30d {+16h 17m 13s}  -16.31d {-16d 18' 37"}
MOON_DIST:        84.27 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.05, -9.90 [deg] galactic lon,lat of the burst
ECL_COORDS:      331.95, 46.14 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
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 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:22:07 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.218d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.128d {+32d 07' 40"} (J2000)
POINT_ROLL:      241.555d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  26198.26 SOD {07:16:38.26} UT,   298.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.692
N_STARS:         190
X_OFFSET:        388 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1827 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00724438000msufc0298.fits
SUN_POSTN:       245.71d {+16h 22m 51s}  -21.56d {-21d 33' 36"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.34d {+16h 17m 21s}  -16.32d {-16d 18' 58"}
MOON_DIST:        84.23 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 29 Nov 16 07:22:26 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.218d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.128d {+32d 07' 40"} (J2000)
POINT_ROLL:      241.555d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  26198.26 SOD {07:16:38.26} UT,   298.4 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.692
N_STARS:         190
X_OFFSET:        388 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1827 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00724438000msufc0298.fits
SUN_POSTN:       245.71d {+16h 22m 51s}  -21.56d {-21d 33' 36"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.34d {+16h 17m 22s}  -16.32d {-16d 19' 00"}
MOON_DIST:        84.23 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [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:     Tue 29 Nov 16 07:23:28 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.218d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.128d {+32d 07' 40"} (J2000)
ROLL:            241.555d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  26198.26 SOD {07:16:38.26} UT,   298.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     502096615
X_OFFSET:        947 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1107
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00724438000msuni0316.fits
SUN_POSTN:       245.71d {+16h 22m 51s}  -21.56d {-21d 33' 36"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.35d {+16h 17m 24s}  -16.32d {-16d 19' 05"}
MOON_DIST:        84.22 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [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:     Tue 29 Nov 16 07:23:46 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     724438,   Seg_Num: 0
POINT_RA:        316.218d {+21h 04m 52s} (J2000)
POINT_DEC:       +32.128d {+32d 07' 40"} (J2000)
ROLL:            241.555d
IMG_START_DATE:  17721 TJD;   334 DOY;   16/11/29
IMG_START_TIME:  26198.26 SOD {07:16:38.26} UT,   298.4 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     502096615
X_OFFSET:        947 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1107
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00724438000msuni0316.fits
SUN_POSTN:       245.71d {+16h 22m 51s}  -21.56d {-21d 33' 36"}
SUN_DIST:         86.30 [deg]   Sun_angle= -4.7 [hr] (East of Sun)
MOON_POSTN:      244.35d {+16h 17m 24s}  -16.32d {-16d 19' 06"}
MOON_DIST:        84.22 [deg]
MOON_ILLUM:      0 [%]
GAL_COORDS:       77.04, -9.90 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      331.93, 46.14 [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_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #20210
D. Kocevski (NASA/GSFC/ORAU), S. D. Barthelmy (GSFC), J. R. Cummings (NASA/UMBC), B. Mingo (U Leicester), K. L. Page (U Leicester), B. Sbarufatti (INAF-OAB/PSU) and M. H. Siegel (PSU) report on behalf of the Swift Team:
At 07:11:39 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 161129A (trigger=724438). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 316.193, +32.125 which is
```
   RA(J2000)  =  21h 04m 46s
   Dec(J2000) = +32d 07' 30"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows multiple peaks with a duration of about 50 sec. The peak count rate was ~4400 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 07:13:01.8 UT, 82.0 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 316.22890, 32.13574 which is equivalent to:
```
   RA(J2000)  = 21h 04m 54.94s
   Dec(J2000) = +32d 08' 08.7"
```
with an uncertainty of 3.6 arcseconds (radius, 90% containment). This location is 116 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 (2.50 x 10^21 cm^-2, Willingale et al. 2013), with an excess column of 2.5 (+2.84/-2.37) x 10^21 cm^-2 (90% confidence).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 86 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image does not cover the XRT error circle. 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 0.21.
Burst Advocate for this burst is D. Kocevski (dankocevski AT gmail.com). 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 Circular #20211
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 2977 s of XRT Photon Counting mode data and 6 UVOT images for GRB 161129A, 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 = 316.22770, +32.13488 which is equivalent to:
```
RA (J2000): 21h 04m 54.65s
Dec (J2000): +32d 08' 05.6"
```
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 #20212
A. Melandri (INAF-OAB), J.A. Kennea (PSU), B. Sbarufatti (INAF-OAB/PSU), D.N. Burrows (PSU), P.A. Evans (U. Leicester), S.L. Gibson (U. Leicester), J.P. Osborne (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC) and D. Kocevski report on behalf of the Swift-XRT team:
We have analysed 7.8 ks of XRT data for GRB 161129A (Kocevski et al. GCN Circ. 20210), from 90 s to 17.8 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN Circ. 20211).
The late-time light curve (from T0+3.9 ks) can be modelled with a power-law decay with a decay index of alpha=2.21 (+0.15, -0.14).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.74 (+0.13, -0.12). The best-fitting absorption column is 3.2 (+0.7, -0.6) x 10^21 cm^-2, in excess of the Galactic value of 2.5 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 4.4 x 10^-11 (5.8 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     3.2 (+0.7, -0.6) x 10^21 cm^-2
Galactic foreground: 2.5 x 10^21 cm^-2
Excess significance: 2.0 sigma
Photon index:	     1.74 (+0.13, -0.12)
```
If the light curve continues to decay with a power-law decay index of 2.21, the count rate at T+24 hours will be 7.1 x 10^-4 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.1 x 10^-14 (4.1 x 10^-14) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00724438.
This circular is an official product of the Swift-XRT team.
GCN Circular #20213
Kindly find the attachment of detection of GRB161129A by Astrosat CZTI.
GCN Circular #20214
V. Sharma, D. Bhattacharya and V. Bhalerao (IUCAA), A. R. Rao (TIFR) and S. Vadawale (PRL) report on behalf of the AstroSat CZTI collaboration:
Analysis of AstroSat CZTI data showed clear detection of GRB161129A (Swift BAT detection: S. Barthelmy et al., GCN Circ. 20210) in the 40-200 keV energy range. The light curve shows multiple peak structure at 07:12:06.0 UT, after 27 secs of the Swift Trigger. The measured peak count rate is 170.205 counts/sec above the background in combined data of four quadrants, with a total of 2160.0 counts. The local mean background count rate was 377.79 counts/sec. Using cumulative rates, we measure a T90 of 34.06 secs.
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 #20215
E. Mazaeva (IKI), I. Reva (Fesenkov Astrophysical Institute), A. Kusakin (Fesenkov Astrophysical Institute), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of 161129A (Kocevski et al., GCN 20210) with Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory. We obtained several images in R filter starting on 2016-11-29 (UT) 12:51:12. Within enhanced XRT position (Beardmore et al. GCN 20211) we detected optical source which is absent in USNO-B1.0 but barely visible in DSS2 (red). At the moment we can not say anything about the source variability. The source might be a superposition of the afterglow and a host galaxy. Preliminary photometry of the source is following
```
Date       UT start   t-T0   Filter  Exp.   OT     Err.  UL
                       (mid, days)    (s)

2016-11-29 12:51:12 0.25949  R       13*300 20.60  0.06  22.4
```
Photometry is based on nearby USNO-B1.0 stars
```
USNO-B1.0_id    R2
1221-0612083 17.30
1221-0612140 19.02
```
GCN Circular #20216
S. Klose and B. Stecklum (both Thueringer Landessternwarte Tautenburg) report:
We imaged the field of GRB 161129A (Kocevski et al., GCN 20210) with the Tautenburg Schmidt telescope equipped with the prime focus CCD camera. Observations were performed at a midtime of 16:41 UT (November 29).
Inside the enhanced XRT error circle (radius 1.7 arcsec; Beardmore et al., GCN 20211) we find a faint source at coordinates RA, Decl. (J2000) = 21:04:54.53, 32:08:05.9 (+/- 0.5 arcsec). Using the USNO B2 star at coordinates RA, Decl. (J2000) = 21:04:54.65, 32:08:05.6 as a photometric reference (Ic = 18.38), we measure for this source a preliminary (Vega) magnitude of Ic = 20.3 +/- 0.2 mag.
We note, however, that the DSS2 red shows a faint source at the central position of the enhanced XRT error circle at roughly the same coordinates. Given that the seeing in our images is about 2 arcsec, and given that our images are not substantially deeper than the DSS2 red, we cannot decide whether we see this faint source or a faint transient on top of it. In any case, at the time of our observations any optical transient was fainter than about Ic=20.
GCN Circular #20217
N. P. M. Kuin (UCL-MSSL) and D. Kocevski (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 161129A 86 s after the BAT trigger (Kocevski et al., GCN Circ. 20210). A source consistent with the XRT position (Beardmore et al. GCN Circ. 20211) is detected in the initial UVOT exposures.
The source is detected in UVOT images at position:
```
RA =  21h 04m 54.6s (J2000)
Dec = 32d 08' 05.52" (J2000)
```
with an uncertainty of 0.6" (90% confidence)
Preliminary detections and 3-sigma upper limits 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               86         6356          400         20.61 +/- 0.20
v                 3858         5493          393        >19.0
b                  554         6314          413        >20.0
u                  298         6109          639        >19.8
w1                4268         5903          393        >19.4
m2                4063         5698          393        >19.6
w2                 604         5288          208        >19.5
```
There are low-significance signs of the source in all other filters. Though the source seems to reach peak brightness around 500s the photometric errors are also consistent with a constant source brightness up to 10ks.
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.21 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #20218
D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of MITSuME and OISTER collaboration:
We observed the field of GRB 161129A (Kocevski et al., GCNC 20210) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory.
The observation started on 2016-11-29 08:54:33 UT (~1.7 h after the burst). We detected the previously reported source (Mazaeva et al., GCNC 20215; Klose and Stecklum, GCNC 20216) in Rc and Ic bands.
Photometric results and three sigma upper limit of the OT are listed below. We used GSC2.3 catalog for flux calibration.
```
#T0+[day]  MID-UT    T-EXP[sec]   g'    Rc  Rc_err  Ic  Ic_err
------------------------------------------------------------------
0.11332    09:54:50    6120.0   >20.2   19.2 0.2    18.6 0.2
------------------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
```
GCN Circular #20219
O.J. Roberts (UCD), C. Meegan (UAH), and R. Hamburg (UAH) report on behalf of the Fermi GBM Team:
"At 07:11:39.96 UT on the 29th of November 2016, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 161129A (trigger 502096303/161129300), which was also detected by Swift (Kocevski et al., GCN 20210). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 87 degrees using the Swift position.
The GBM light curve shows a bright burst, with multiple peaks over a duration (T90) of about 36 s (50-300 keV). The time-averaged spectrum from T0+4.8 s to T0+45.7 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -1.13 +/- 0.06 and the cutoff energy, parameterized as Epeak, is 197 +/- 21 keV.
The event fluence (10-1000 keV) in this time interval is (8.4 +/- 0.4)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+26 s in the 10-1000 keV band is 5.6 +/- 0.3 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #20220
S. D. Barthelmy (GSFC), J. R. Cummings (CPI), N. Gehrels (GSFC), H. A. Krimm (NSF/USRA), D. Kocevski (NASA/MSFC), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), J. P. Norris (BSU), 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-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 161129A (trigger #724438) (Kocevski, et al., GCN Circ. 20210). The BAT ground-calculated position is RA, Dec = 316.221, 32.137 deg which is
```
  RA(J2000)  =  21h 04m 53.1s
  Dec(J2000) = +32d 08' 11.9"
```
with an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 69%.
The mask-weighted light curve shows a short spike from ~T0 to ~T+0.2 s, followed by several overlapping pulses that last until ~T+45 s. T90 (15-350 keV) is 35.53 +- 2.09 sec (estimated error including systematics). The time-averaged spectrum from T+0.06 to T+44.58 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.57 +- 0.06. The fluence in the 15-150 keV band is 3.6 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+26.64 sec in the 15-150 keV band is 3.4 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
Because the light curve seems to resemble that of a short GRB with extended emission (Norris et al. 2010), we perform further analysis of the short spike. Using a 4-ms binned light curve, the lag analysis finds a lag of 4 +/- 3 ms for the 50-100 keV to 15-25 keV band, which is consistent with that of a short GRB. However, the spectral fit of the short spike using a simple power-law model gives a power-law index of 1.9 +/- 0.3. This value is on the softer end of short GRBs, and also softer than all the initial pulses of those short GRBs with extended emission (Lien et al. 2016). The power-law index of the spectrum for the rest of the light curve is 1.53 +/- 0.06, which is harder than the initial spike and thus unexpected from a short GRB with extended emission.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/724438/BA/
GCN Circular #20223
K. Yanagisawa, D. Kuroda, Y. Shimizu, H. Izumiura (OAO/NAOJ), M. Yoshida (Hiroshima), K. Ohta(Kyoto), and N. Kawai(Tokyo Tech.) report on behalf of the MITSuME collaboration:
We observed the field of GRB 161129A (Kocevski et al., GCNC 20210) in Ks-band with a wide-field NIR camera at Okayama Astrophysical Observatory (Japan). The camera has an effective aperture of 0.91m.
Observations started from 08:44 UT on 29th November, 93 min after the BAT trigger, to 09:29 UT. The total exposure of 17.3 min was successfully obtained.
In our co-add image, we found a faint source at coordinates
```
   R.A.(J2000) = 21:04:54.59
   DEC (J2000) = +32:08:05.2,
```
close to the position reported by Beardmore et al.(GCNC 20211), and Klose & Stecklum (GCNC 20216).
We measured the source magnitude of Ks = 15.95 +/- 0.14 (Vega). The calibration was made against 2MASS field stars.
```
T0+[min]    MID-UT     T-EXP[min]    Ks
------------------------------------------------------------
  +115       09:06       17.3         15.95 +/- 0.14 (Vega)
------------------------------------------------------------
T0+ : Elapsed time after the burst [min]
T-EXP: Total Exposure time [min]
```
GCN Circular #20224
E. Mazaeva (IKI), E. Chornaya (UAFO, ISON), A. Cochergin (UAFO), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 161129A (Kocevski et al., GCN 20210) with SANTEL-650 (0.65m) telescope of UAFO/ISON-Ussuriysk observatory. We obtained several unfiltered images starting on November 29 (UT) 11:47:34. We detected optical afterglow (Mazaeva et al. GCN 20215; Klose et al. GCN 20216; Kuin et al. GCN 20217). Preliminary photometry of a combined image is following
```
Date             UT start      t-T0        Filter  Exp.     OT     Err.  UL
                                       (mid, days)         (s)

2016-11-29 10:46:15  0.16055  CR      27*60 19.90  0.08  22.5
2016-11-29 11:19:35  0.18449  CR      30*60 19.95  0.09  22.5
```
Photometry is based on nearby USNO-B1.0 stars
```
USNO-B.1_id    R2
1221-0612083 17.30
1221-0612140 19.02
```
GCN Circular #20226
E. Mazaeva (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), A. Volnova (IKI), I. Korobtsev (ISTP) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 161129A (Kocevski et al., GCN 20210) with AZT-33IK telescope of Sayan observatory (Mondy) starting on November, 30 (UT) 11:19:53. We obtained several images in R-filter. We detected a source coinsiding with optical afterglow (Mazaeva et al. GCN 20215; Klose et al. GCN 20216; Kuin et al. GCN 20217; Kuroda et al. GCN 20218; Yanagisawa et al. GCN 20223). Preliminary photometry of a combined image is following
```
Date       UT start   t-T0    Filter  Exp.     OT     Err.  UL
                      (mid, days)      (s)

2016-11-30 11:19:53  1.19324  R      29*120    21.60  0.17  22.8
```
Photometry is based on nearby USNO-B1.0 stars
```
USNO-B.1_id    R2
1221-0612083 17.30
1221-0612140 19.02
```
GCN Circular #20236
J. C. Sun (IHEP), M. R. Kole (DPNC/UniGe), Y. H. Wang (IHEP),
S. L. Xiong (IHEP),Z. H. Li (IHEP),H. C. Li (IHEP),
Y. Zhao (IHEP), T. Batsch(NCBJ),T. Bernasconi (ISDC/UniGe),
F. Cadoux (DPNC/UniGe), Y. W. Dong (IHEP),M. Z. Feng
(IHEP), M. Y. Ge (IHEP), W.Hajdas (PSI),Y. Huang (IHEP),
Karol Jedrzejczak (NCBJ), F. J. Lu (IHEP), R. Marcinkowski
(PSI), M. Pohl (DPNC/UniGe),N. Produit (ISDC/UniGe),
A. Rutczynska (NCBJ), D. Rybka (NCBJ),L. M. Song (IHEP),
J. Szabelski (NCBJ), X. Wen (IHEP), B. B. Wu (IHEP),X. Wu
(DPNC/UniGe), H. L. Xiao (PSI), M. Xu (IHEP), J. Zhang
(IHEP),L. Y. Zhang (IHEP), P. Zhang (PSI), S. N. Zhang
(IHEP),Y. J. Zhang (IHEP), A. Zwolinska (NCBJ)
report on behalf of the POLAR team:
At 2016-11-29T07:11:40.00 UT(T0), during a routine
on-ground search of data, POLAR detected the GRB 161129A,
which was also observed by the Swift/BAT (trigger
#724438), Fermi/GBM (trigger 502096303/161129300), and
Astrosat/CZTI (V. Sharma et al., GCN Circ. 20214). The
detection of this GRB happened on the tail of a big Solar Flare.
The POLAR light curve consists of multiple peaks
with a duration (T90) of 41.5 s measured from T0+3.75 s.
The 500-ms peak flux, measured from T0+27.25 s, is 705.7
cnts/sec. The above measurements are in the preliminary
calculated energy range of about 80 =E2=80=93 500 keV.
LC_URL:
http://www.isdc.unige.ch/polar/lc/161129A/lcr.png
The incident angle at T0 in POLAR detector coordinate is:
theta: 42.6 [deg]
phi: 52.3 [deg]
These direction is computed using the best location from
the Swift/BAT, which is (J2000):
RA: 316.221 [deg]
Dec: 32.137 [deg]
Err: 1.8 [arcmin]
The distribution of the GRB signal among its 25 detector
modules is also consistent with this incident geometry.
Preliminary calculations of the MDP show that a
polarimetric measurement of this burst can be attempted.
The analysis results presented above are preliminary. The
calibration work is ongoing.
POLAR is a dedicated Gamma-Ray Burst polarimeter which was
launchedon-board the Chinese space laboratory Tiangong-2
(TG-2) on Sep 15, 2016.The energy detection range of POLAR
is ~ 50-500 keV.More information about POLAR can be found
at _http://polar.ihep.ac.cn/en/_.
GCN Circular #20242
Tomoki Morokuma and Yuki Sarugaku (Univ. of Tokyo) report on behalf of=E3=80=80the OISTER collaboration:
We observed the field of GRB 161129A (Kocevski et al. GCN 20210) with=E3=80=80the 1.05-m Schmidt telescope and KWFC (Sako et al. 2012, Proc. SPIE=E3=80=808446, 84466L) at Kiso Observatory in Japan. The observations were made=E3=80=80in z-band at 2016-11-29 08:15-08:36 (UT; about 1 hour after the burst). The flux is calibrated with z-band imaging data for a nearby SDSS field taken at almost the same airmass as that of the GRB field.
We do not detect any new source within the XRT error circle or at the position with Swift/UVOT and other telescopes' detections (e.g., Kuin et al. GCN 20217) and the upper limits are as follows.
```
# ------------------------------------------------
# MID-MJD    MID-UT   t_exp  z_lim
# ------------------------------------------------
57721.3442  08:15:36   60.0   16.9
57721.3477  08:20:44  120.0   17.7
57721.3513  08:25:50  180.0   18.3
57721.3542  08:30:08  180.0   18.6
57721.3573  08:34:25  180.0   18.7
# ------------------------------------------------
MID-MJD [day] : MJD in the middle of exposure
MID-UT        : UT in the middle of exposure
t_exp [sec]   : Exposure time
z_lim         : 5-sigma limiting magnitude (AB)
```
GCN Circular #20244
K. E. Heintz (Univ. Iceland and DARK/NBI), D. Malesani (DARK/NBI and DTU Space), Z. Cano (IAA-CSIC), A. De Ugarte Postigo (IAA-CSIC and DARK/NBI), G. Fedorets (NOT and Univ. Helsinki), R. Tronsgaard Rasmussen (NOT), A. A. Djupvik (NOT), I. R. Losada (NOT and Stockholm Univ.), I. Svardh (NOT), J. Clasen (NOT), S. Armas Perez (NOT), report on behalf of a larger collaboration:
We observed the optical counterpart of GRB 161129A (Kocevski et al., GCN 20210; Mazaeva et al., GCN 20215) with the Nordic Optical Telescope (NOT) equipped with the AlFOSC imager. Observations were carried out in the R band (3x200 s), with a mid time 2016 Dec 4.83 UT (5.6 days after the GRB). Observing conditions were good with a seeing of 0.8".
Two objects are detected within the XRT error region (Beardmore et al. 2016, GCN Circ. 20211), at the following coordinates (calibrated against the USNO-B1.0 catalog):
```
source A: RA = 21:04:54.69, Dec = +32:08:04.7
source B: RA = 21:04:54.63, Dec = +32:08:05.9
```
A finding chart is posted at this URL: http://www.astro.ku.dk/~malesani/GRB/161129A/GRB161129A.png
Given their small separation (1.4"), these objects may be blended in images with coarser spatial resolution. Source A (with a magnitude R = 21.6) is consistent in flux and position with the faint smudge visible in the DSS red, previously noted by Mazaeva et al. (GCN 20215) and Klose & Stecklum (GCN 20216).
Source B is extended, and is consistent with the position reported for the optical afterglow by Kuin et al. (GCN 20217) and Kuroda et al. (GCN 20218). We propose that source B is (dominated by) the host galaxy of GRB 161129A. We further note that the cumulative magnitude of the complex (objects A+B) is R ~ 21.2, which is significantly fainter than previous reports (e.g. Kuroda et al., GCN 20218; Mazaeva et al., GCN 20224), thus firmly establishing the presence of a fading optical afterglow for GRB 161129A. Photometry was computed against the values of the two USNO-B1.0 stars as listed by Mazaeva et al. (GCN 20215).
GCN Circular #20245
=E2=80=8BZ. Cano (IAA-CSIC), D. Malesani (DARK/NBI and DTU Space), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), L. Izzo, C. C. Thoene (IAA-CSIC) and N. Castro-Rodriguez (GRANTECAN/IAC/Universidad de La Laguna) report:
We observed the field of GRB 161129A (Kocevski et al., GCN Circ. 20210) with OSIRIS on the 10.4 m GTC telescope on La Palma (Spain). The observations started at 19:46:40.9 UT on 05-December-2016 (6.52 days after the burst), which consisted of 4 x 1200 s spectra using grism R1000B, which covers the wavelength range 3700-7800 angstroms, with a resolution of R~1000.
Within the enhanced XRT error region (Beardmore et al. 2016, GCN Circ. 20211) we note the presence of sources A & B detected by Heintz et al. (GCN Circ. 20244). The spectrum of the extended object (source B) shows a continuum with a strong emission line that we attribute to the [OII] 3727/3729 doublet at z=3D0.645, as well as weaker emission lines consistent with being H-gamma and H-delta at the same redshift. We propose this star-forming galaxy to be the host of GRB 161129A. The spectrum of source A displays absorption features of Ca II K and H, Mg I and MgH at z~0, confirming it is a foreground star and not related to GRB 161129A.
GCN Circular #20317
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 161129A (Kocevski et al., GCN 20210) 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 Nov 29.50, Nov 30.72, Dec 02.69 and Dec 06.68 (UT) do not reveal any radio source at the XRT location (Beardmore et al., GCN 20211), with 3sigma upper limits of 120 uJy, 102 uJy, 90 uJy and 117 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/.

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Jochen Greiner, last update: 21-Dec-2016 [Disclaimer]