(All information courtesy of the instrument teams.)
Previous IAU Circulars
TITLE: GCN/INTEGRAL NOTICE NOTICE_DATE: Mon 22 Sep 08 11:04:10 UT NOTICE_TYPE: INTEGRAL Wakeup TRIGGER_NUM: 5359, Sub_Num: 0 GRB_RA: 270.8626d {+18h 03m 27s} (J2000), 270.9945d {+18h 03m 59s} (current), 270.1068d {+18h 00m 26s} (1950) GRB_DEC: -22.4969d {-22d 29' 48"} (J2000), -22.4961d {-22d 29' 45"} (current), -22.4992d {-22d 29' 56"} (1950) GRB_ERROR: 2.88 [arcmin, radius, statistical only] GRB_INTEN: 11.83 [sigma] GRB_TIME: 39837.61 SOD {11:03:57.61} UT GRB_DATE: 14731 TJD; 266 DOY; 08/09/22 SC_RA: 270.69 [deg] (J2000) SC_DEC: -30.63 [deg] (J2000) SUN_POSTN: 179.83d {+11h 59m 18s} +0.08d {+00d 04' 31"} SUN_DIST: 91.11 [deg] Sun_angle= -6.1 [hr] (East of Sun) MOON_POSTN: 93.43d {+06h 13m 42s} +27.08d {+27d 04' 52"} MOON_DIST: 174.91 [deg] GAL_COORDS: 7.58, -0.20 [deg] galactic lon,lat of the burst ECL_COORDS: 270.80, 0.94 [deg] ecliptic lon,lat of the burst COMMENTS: INTEGRAL GRB Coordinates. COMMENTS: Possibly real GRB event
TITLE: GCN/INTEGRAL NOTICE NOTICE_DATE: Mon 22 Sep 08 11:07:09 UT NOTICE_TYPE: INTEGRAL Refined TRIGGER_NUM: 5359, Sub_Num: 1 GRB_RA: 270.8477d {+18h 03m 23s} (J2000), 270.9796d {+18h 03m 55s} (current), 270.0919d {+18h 00m 22s} (1950) GRB_DEC: -22.4912d {-22d 29' 27"} (J2000), -22.4904d {-22d 29' 24"} (current), -22.4935d {-22d 29' 35"} (1950) GRB_ERROR: 2.65 [arcmin, radius, statistical only] GRB_INTEN: 19.46 [sigma] GRB_TIME: 39871.87 SOD {11:04:31.87} UT GRB_DATE: 14731 TJD; 266 DOY; 08/09/22 SC_RA: 270.69 [deg] (J2000) SC_DEC: -30.63 [deg] (J2000) SUN_POSTN: 179.83d {+11h 59m 19s} +0.07d {+00d 04' 28"} SUN_DIST: 91.09 [deg] Sun_angle= -6.1 [hr] (East of Sun) MOON_POSTN: 93.46d {+06h 13m 50s} +27.08d {+27d 04' 43"} MOON_DIST: 174.89 [deg] GAL_COORDS: 7.58, -0.19 [deg] galactic lon,lat of the burst ECL_COORDS: 270.78, 0.95 [deg] ecliptic lon,lat of the burst COMMENTS: INTEGRAL GRB Coordinates. COMMENTS: Possibly real GRB event
TITLE: GCN/INTEGRAL NOTICE NOTICE_DATE: Mon 22 Sep 08 11:46:13 UT NOTICE_TYPE: INTEGRAL Offline TRIGGER_NUM: 5359, Sub_Num: 2 GRB_RA: 270.8380d {+18h 03m 21s} (J2000), 270.9699d {+18h 03m 53s} (current), 270.0821d {+18h 00m 20s} (1950) GRB_DEC: -22.5090d {-22d 30' 31"} (J2000), -22.5082d {-22d 30' 29"} (current), -22.5112d {-22d 30' 39"} (1950) GRB_ERROR: 2.00 [arcmin, radius, statistical only] GRB_INTEN: 16.69 [sigma] GRB_TIME: 39871.87 SOD {11:04:31.87} UT GRB_DATE: 14731 TJD; 266 DOY; 08/09/22 SC_RA: 270.69 [deg] (J2000) SC_DEC: -30.63 [deg] (J2000) SUN_POSTN: 179.85d {+11h 59m 25s} +0.06d {+00d 03' 50"} SUN_DIST: 91.06 [deg] Sun_angle= -6.1 [hr] (East of Sun) MOON_POSTN: 93.89d {+06h 15m 33s} +27.04d {+27d 02' 38"} MOON_DIST: 174.75 [deg] GAL_COORDS: 7.56, -0.19 [deg] galactic lon,lat of the burst ECL_COORDS: 270.77, 0.93 [deg] ecliptic lon,lat of the burst COMMENTS: INTEGRAL GRB Coordinates. COMMENTS: refined_coordinates_after_offline_analysis
RA: 270.838 [degrees] DEC: -22.509 [degrees]with an uncertainty of 2 arcmin (90% c.l.).
Filter T_start T_stop Exp(s) Mag ----------------------------------------- v 15,622 15,834 208 >18.9 b 14,550 26,731 625 >20.6 u 14,333 31,298 834 >20.3 uvw1 13,904 30,081 1668 >20.5 uvm2 15,839 15,853 14 >16.1 uvw2 14,769 27,419 2341 >20.8 -----------------------------------------The quoted upper limits have not been corrected for the expected, and highly uncertain, Galactic extinction along the line of sight corresponding to a reddening of E_{B-V} = 20 mag (Schlegel, et al., 1998, ApJS, 500, 525). All photometry is on the UVOT flight system described in Poole et al. (2008, MNRAS, 383, 627).
-------------------------------------------------------------- Start(UT) End(UT) Num. of frames Limit (mag.) -------------------------------------------------------------- 11:15:19 11:15:49 1 16.7 11:15:19 11:41:35 20 17.1 ---------------------------------------------------------------