Previous IAU Circulars 
(All information courtesy of the instrument teams.)
Previous IAU Circulars
Results of Observations
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:39:41 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 1129775, Seg_Num: 0
GRB_RA: 38.949d {+02h 35m 48s} (J2000),
39.186d {+02h 36m 45s} (current),
38.429d {+02h 33m 43s} (1950)
GRB_DEC: -34.624d {-34d 37' 26"} (J2000),
-34.526d {-34d 31' 31"} (current),
-34.841d {-34d 50' 28"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 4064 [cnts] Image_Peak=416 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 146 E_range: 25-100 keV
BKG_INTEN: 15385 [cnts]
BKG_TIME: 85145.95 SOD {23:39:05.95} UT
BKG_DUR: 8 [sec]
GRB_DATE: 19868 TJD; 289 DOY; 22/10/16
GRB_TIME: 85164.19 SOD {23:39:24.19} UT
GRB_PHI: -69.17 [deg]
GRB_THETA: 24.27 [deg]
SOLN_STATUS: 0x20000003
RATE_SIGNIF: 44.29 [sigma]
IMAGE_SIGNIF: 15.30 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +4 +0 +0 +68 +0
SUN_POSTN: 201.83d {+13h 27m 20s} -9.16d {-09d 09' 26"}
SUN_DIST: 133.33 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.57d {+07h 10m 17s} +27.17d {+27d 10' 04"}
MOON_DIST: 89.36 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 237.92,-66.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 21.23,-46.64 [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 = 88.55,-19.08 [deg].
COMMENTS:
COMMENTS: NOTE: This BAT event is temporally(2.0<100sec) coincident with the FERMI_GBM event (trignum=687656367).
TITLE: GCN/FERMI NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:39:53 UT
NOTICE_TYPE: Fermi-GBM Flight Position
RECORD_NUM: 47
TRIGGER_NUM: 687656367
GRB_RA: 40.000d {+02h 40m 00s} (J2000),
40.245d {+02h 40m 59s} (current),
39.463d {+02h 37m 51s} (1950)
GRB_DEC: -29.983d {-29d 58' 59"} (J2000),
-29.886d {-29d 53' 10"} (current),
-30.197d {-30d 11' 50"} (1950)
GRB_ERROR: 10.17 [deg radius, statistical plus systematic]
GRB_INTEN: 219 [cnts/sec]
DATA_SIGNIF: 10.70 [sigma]
INTEG_TIME: 2.048 [sec]
GRB_DATE: 19868 TJD; 289 DOY; 22/10/16
GRB_TIME: 85162.71 SOD {23:39:22.71} UT
GRB_PHI: 223.00 [deg]
GRB_THETA: 95.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO: 0.81
LOC_ALGORITHM: 3 (version number of)
MOST_LIKELY: 98% GRB
2nd_MOST_LIKELY: 1% Generic Transient
DETECTORS: 0,0,0, 0,0,0, 0,1,1, 0,0,0, 0,0,
SUN_POSTN: 201.83d {+13h 27m 20s} -9.16d {-09d 09' 26"}
SUN_DIST: 137.13 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.57d {+07h 10m 17s} +27.17d {+27d 10' 03"}
MOON_DIST: 86.00 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 226.22,-66.05 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 25.19,-42.84 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221016986/quicklook/glg_lc_medres34_bn221016986.gif
COMMENTS: Fermi-GBM Flight-calculated Coordinates.
COMMENTS: This trigger occurred at longitude,latitude = 100.72,23.17 [deg].
COMMENTS: The LC_URL file will not be created until ~15 min after the trigger.
COMMENTS:
COMMENTS: NOTE: This GBM event is temporally(2.0<100sec) coincident with the SWIFT_BAT event (trignum=1129775).
TITLE: GCN/FERMI NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:40:11 UT
NOTICE_TYPE: Fermi-GBM Ground Position
RECORD_NUM: 59
TRIGGER_NUM: 687656367
GRB_RA: 38.250d {+02h 33m 00s} (J2000),
38.499d {+02h 34m 00s} (current),
37.703d {+02h 30m 49s} (1950)
GRB_DEC: -28.520d {-28d 31' 11"} (J2000),
-28.421d {-28d 25' 13"} (current),
-28.739d {-28d 44' 21"} (1950)
GRB_ERROR: 2.73 [deg radius, statistical only]
DATA_SIGNIF: 32.20 [sigma]
DATA_INTERVAL: 4.096 [sec]
GRB_DATE: 19868 TJD; 289 DOY; 22/10/16
GRB_TIME: 85162.71 SOD {23:39:22.71} UT
GRB_PHI: 221.00 [deg]
GRB_THETA: 96.00 [deg]
E_RANGE: 44.032 - 279.965 [keV]
LOC_ALGORITHM: 4173 (Gnd S/W Version number)
SUN_POSTN: 201.83d {+13h 27m 20s} -9.16d {-09d 09' 26"}
SUN_DIST: 139.12 [deg] Sun_angle= 10.9 [hr] (West of Sun)
MOON_POSTN: 107.57d {+07h 10m 18s} +27.17d {+27d 10' 02"}
MOON_DIST: 86.44 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 222.42,-67.54 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 24.13,-40.88 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221016986/quicklook/glg_lc_medres34_bn221016986.gif
POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_687656367.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 SWIFT_BAT event (trignum=1129775).
TITLE: GCN/FERMI NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:40:03 UT
NOTICE_TYPE: Fermi-GBM Flight Position
RECORD_NUM: 60
TRIGGER_NUM: 687656367
GRB_RA: 38.850d {+02h 35m 24s} (J2000),
39.077d {+02h 36m 19s} (current),
38.352d {+02h 33m 24s} (1950)
GRB_DEC: -39.167d {-39d 10' 00"} (J2000),
-39.068d {-39d 04' 04"} (current),
-39.384d {-39d 23' 02"} (1950)
GRB_ERROR: 6.45 [deg radius, statistical plus systematic]
GRB_INTEN: 320 [cnts/sec]
DATA_SIGNIF: 22.10 [sigma]
INTEG_TIME: 4.096 [sec]
GRB_DATE: 19868 TJD; 289 DOY; 22/10/16
GRB_TIME: 85162.71 SOD {23:39:22.71} UT
GRB_PHI: 231.00 [deg]
GRB_THETA: 100.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO: 0.81
LOC_ALGORITHM: 3 (version number of)
MOST_LIKELY: 98% GRB
2nd_MOST_LIKELY: 1% Generic Transient
DETECTORS: 0,0,0, 0,0,0, 0,1,1, 0,0,0, 0,0,
SUN_POSTN: 201.83d {+13h 27m 20s} -9.16d {-09d 09' 26"}
SUN_DIST: 129.18 [deg] Sun_angle= 10.9 [hr] (West of Sun)
MOON_POSTN: 107.57d {+07h 10m 17s} +27.17d {+27d 10' 03"}
MOON_DIST: 91.98 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 248.65,-65.26 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 17.90,-50.62 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221016986/quicklook/glg_lc_medres34_bn221016986.gif
COMMENTS: Fermi-GBM Flight-calculated Coordinates.
COMMENTS: This trigger occurred at longitude,latitude = 100.72,23.17 [deg].
COMMENTS: The LC_URL file will not be created until ~15 min after the trigger.
COMMENTS:
COMMENTS: NOTE: This GBM event is temporally(2.0<100sec) coincident with the SWIFT_BAT event (trignum=1129775).
TITLE: GCN/FERMI NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:49:38 UT
NOTICE_TYPE: Fermi-GBM Final Position
RECORD_NUM: 0
TRIGGER_NUM: 687656367
GRB_RA: 37.600d {+02h 30m 24s} (J2000),
37.844d {+02h 31m 22s} (current),
37.066d {+02h 28m 16s} (1950)
GRB_DEC: -32.060d {-32d 03' 35"} (J2000),
-31.960d {-31d 57' 34"} (current),
-32.281d {-32d 16' 52"} (1950)
GRB_ERROR: 2.22 [deg radius, statistical only]
GRB_DATE: 19868 TJD; 289 DOY; 22/10/16
GRB_TIME: 85162.71 SOD {23:39:22.71} UT
GRB_PHI: 224.00 [deg]
GRB_THETA: 98.00 [deg]
E_RANGE: 44.032 - 279.965 [keV]
LOC_ALGORITHM: 41731 (Gnd S/W Version number)
SUN_POSTN: 201.84d {+13h 27m 21s} -9.16d {-09d 09' 35"}
SUN_DIST: 136.13 [deg] Sun_angle= 10.9 [hr] (West of Sun)
MOON_POSTN: 107.66d {+07h 10m 39s} +27.16d {+27d 09' 40"}
MOON_DIST: 88.92 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 231.83,-67.98 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 21.41,-43.84 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221016986/quicklook/glg_lc_medres34_bn221016986.gif
LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2022/bn221016986/quicklook/glg_locplot_all_bn221016986.png
COMMENTS: Fermi-GBM Final Position.
COMMENTS: This Notice was ground-generated -- not flight-generated.
COMMENTS: The LC_URL file should be available by the time this FINAL notice is produced.
COMMENTS: This notice was generated completely by automated pipeline processing.
COMMENTS: This is likely a Long GRB.
COMMENTS:
COMMENTS: NOTE: This GBM event is temporally(2.0<100sec) coincident with the SWIFT_BAT event (trignum=1129775).
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:43:11 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 1129775, Seg_Num: 0
GRB_RA: 38.949d {+02h 35m 48s} (J2000),
39.186d {+02h 36m 45s} (current),
38.429d {+02h 33m 43s} (1950)
GRB_DEC: -34.624d {-34d 37' 26"} (J2000),
-34.526d {-34d 31' 31"} (current),
-34.841d {-34d 50' 28"} (1950)
GRB_DATE: 19868 TJD; 289 DOY; 22/10/16
GRB_TIME: 85164.19 SOD {23:39:24.19} UT
TRIGGER_INDEX: 146
GRB_PHI: -69.17 [deg]
GRB_THETA: 24.27 [deg]
DELTA_TIME: -63.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 44.29 [sigma]
IMAGE_SIGNIF: 15.30 [sigma]
LC_URL: sw01129775000msb.lc
SUN_POSTN: 201.83d {+13h 27m 20s} -9.16d {-09d 09' 29"}
SUN_DIST: 133.33 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.60d {+07h 10m 24s} +27.17d {+27d 09' 55"}
MOON_DIST: 89.38 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 237.92,-66.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 21.23,-46.64 [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 = 88.55,-19.08 [deg].
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:43:54 UT
NOTICE_TYPE: Swift-UVOT Source List
TRIGGER_NUM: 1129775, Seg_Num: 0
POINT_RA: 38.951d {+02h 35m 48s} (J2000)
POINT_DEC: -34.621d {-34d 37' 14"} (J2000)
POINT_ROLL: 156.463d
IMG_START_DATE: 19868 TJD; 289 DOY; 22/10/16
IMG_START_TIME: 85261.37 SOD {23:41:01.37} UT, 97.2 [sec] since BAT Trigger Time
FILTER: 10, White
BKG_MEAN: 3.335
N_STARS: 18
X_OFFSET: 494 [pixels]
Y_OFFSET: 556 [pixels]
X_MAX: 1453 [pixels]
Y_MAX: 1515 [pixels]
DET_THRESH: 15
PHOTO_THRESH: 8
SL_URL: sw01129775000msufc0097.fits
SUN_POSTN: 201.84d {+13h 27m 20s} -9.16d {-09d 09' 30"}
SUN_DIST: 133.33 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.61d {+07h 10m 26s} +27.16d {+27d 09' 54"}
MOON_DIST: 89.38 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 237.91,-66.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS: 21.23,-46.64 [deg] ecliptic lon,lat of the pointing direction
COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:44:04 UT
NOTICE_TYPE: Swift-UVOT Processed Source List
TRIGGER_NUM: 1129775, Seg_Num: 0
POINT_RA: 38.951d {+02h 35m 48s} (J2000)
POINT_DEC: -34.621d {-34d 37' 14"} (J2000)
POINT_ROLL: 156.463d
IMG_START_DATE: 19868 TJD; 289 DOY; 22/10/16
IMG_START_TIME: 85261.37 SOD {23:41:01.37} UT, 97.2 [sec] since BAT Trigger Time
FILTER: 10, White
BKG_MEAN: 3.335
N_STARS: 18
X_OFFSET: 494 [pixels]
Y_OFFSET: 556 [pixels]
X_MAX: 1453 [pixels]
Y_MAX: 1515 [pixels]
DET_THRESH: 15
PHOTO_THRESH: 8
SL_URL: sw01129775000msufc0097.fits
SUN_POSTN: 201.84d {+13h 27m 21s} -9.16d {-09d 09' 30"}
SUN_DIST: 133.33 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.61d {+07h 10m 26s} +27.16d {+27d 09' 53"}
MOON_DIST: 89.38 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 237.91,-66.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS: 21.23,-46.64 [deg] ecliptic lon,lat of the pointing direction
COMMENTS: SWIFT-UVOT Processed Source List.
COMMENTS: All 4 attachments are included.
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:45:12 UT
NOTICE_TYPE: Swift-UVOT Image
TRIGGER_NUM: 1129775, Seg_Num: 0
POINT_RA: 38.951d {+02h 35m 48s} (J2000)
POINT_DEC: -34.621d {-34d 37' 14"} (J2000)
ROLL: 156.463d
IMG_START_DATE: 19868 TJD; 289 DOY; 22/10/16
IMG_START_TIME: 85261.37 SOD {23:41:01.37} UT, 97.2 [sec] since BAT Trigger Time
FILTER: 10, White
EXPOSURE_ID: 687656491
X_OFFSET: 814 [pixels]
Y_OFFSET: 876 [pixels]
WIDTH: 160 [pixels]
HEIGHT: 160 [pixels]
X_GRB_POS: 974
Y_GRB_POS: 1036
BINNING_INDEX: 1
IM_URL: sw01129775000msuni0128.fits
SUN_POSTN: 201.84d {+13h 27m 21s} -9.16d {-09d 09' 31"}
SUN_DIST: 133.33 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.62d {+07h 10m 29s} +27.16d {+27d 09' 51"}
MOON_DIST: 89.39 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 237.91,-66.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS: 21.23,-46.64 [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).
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:45:20 UT
NOTICE_TYPE: Swift-UVOT Processed Image
TRIGGER_NUM: 1129775, Seg_Num: 0
POINT_RA: 38.951d {+02h 35m 48s} (J2000)
POINT_DEC: -34.621d {-34d 37' 14"} (J2000)
ROLL: 156.463d
IMG_START_DATE: 19868 TJD; 289 DOY; 22/10/16
IMG_START_TIME: 85261.37 SOD {23:41:01.37} UT, 97.2 [sec] since BAT Trigger Time
FILTER: 10, White
EXPOSURE_ID: 687656491
X_OFFSET: 814 [pixels]
Y_OFFSET: 876 [pixels]
WIDTH: 160 [pixels]
HEIGHT: 160 [pixels]
X_GRB_POS: 974
Y_GRB_POS: 1036
BINNING_INDEX: 1
IM_URL: sw01129775000msuni0128.fits
SUN_POSTN: 201.84d {+13h 27m 21s} -9.16d {-09d 09' 31"}
SUN_DIST: 133.33 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.62d {+07h 10m 29s} +27.16d {+27d 09' 50"}
MOON_DIST: 89.39 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 237.91,-66.47 [deg] galactic lon,lat of the pointing direction
ECL_COORDS: 21.23,-46.64 [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.
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sun 16 Oct 22 23:45:41 UT
NOTICE_TYPE: Swift-XRT Position
TRIGGER_NUM: 1129775, Seg_Num: 0
GRB_RA: 38.9448d {+02h 35m 46.75s} (J2000),
39.1817d {+02h 36m 43.61s} (current),
38.4249d {+02h 33m 41.96s} (1950)
GRB_DEC: -34.6105d {-34d 36' 37.8"} (J2000),
-34.5120d {-34d 30' 43.1"} (current),
-34.8278d {-34d 49' 40.1"} (1950)
GRB_ERROR: 3.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN: 1.00e-10 [erg/cm2/sec]
GRB_SIGNIF: 10.00 [sigma]
IMG_START_DATE: 19868 TJD; 289 DOY; 22/10/16
IMG_START_TIME: 85344.00 SOD {23:42:24.00} UT, 179.8 [sec] since BAT Trigger Time
TAM[0-3]: 100.00 100.00 100.00 100.00
AMPLIFIER: 1
WAVEFORM: 31
SUN_POSTN: 201.84d {+13h 27m 21s} -9.16d {-09d 09' 31"}
SUN_DIST: 133.34 [deg] Sun_angle= 10.8 [hr] (West of Sun)
MOON_POSTN: 107.62d {+07h 10m 30s} +27.16d {+27d 09' 50"}
MOON_DIST: 89.39 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 237.89,-66.47 [deg] galactic lon,lat of the burst
ECL_COORDS: 21.23,-46.63 [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 0.11% < P(seren) < 0.58%.
Tmid-T0 | Site |Filt.| Expt. | Limit| Comment
_________|_____________________|_____|_______|______|________
32 | MASTER-Kislovodsk | P| | 10 | 14.0 |
40 | MASTER- | C | 10 | 14.7 |
40 | MASTER- | C | 10 | 15.4 |
63 | MASTER- | C | 10 | 14.7 |
63 | MASTER- | C | 10 | 15.2 |
93 | MASTER- | C | 20 | 15.8 |
Filter C is a clear (unfiltred) band.
RA(J2000) = 02h 35m 48s Dec(J2000) = -34d 37' 26"with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single peak with tail structure with a duration of about 30 sec. The peak count rate was ~3500 counts/sec (15-350 keV), at ~0 sec after the trigger.
RA(J2000) = 02h 35m 46.75s Dec(J2000) = -34d 36' 37.4"with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 50 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 https://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time.
R = 21.22 +/- 0.18 I = 20.03 +/- 0.17These magnitudes are not corrected for galactic extinction. Gemini imaging+spectroscopic follow up is ongoing.
RA (J2000): 02h 35m 46.70s Dec (J2000): -34d 36' 38.6"with an uncertainty of 2.4 arcsec (radius, 90% confidence).
Total column: 1.5 (+0.6, -0.5) x 10^21 cm^-2 Galactic foreground: 3.5 x 10^20 cm^-2 Excess significance: 3.5 sigma Photon index: 2.04 (+0.20, -0.19)If the light curve continues to decay with a power-law decay index of 0.78, the count rate at T+24 hours will be 0.019 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 6.1 x 10^-13 (8.1 x 10^-13) erg cm^-2 s^-1.
Filter T_start(s) T_stop(s) Exp(s) Mag white 97 247 147 20.20 +/- 0.23 b 3736 3861 123 >19.8 u 309 349 39 >18.8The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.026 in the direction of the burst (Schlegel et al. 1998).