(All information courtesy of the instrument teams.)
Previous IAU Circulars
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Wed 20 Nov 13 14:39:13 UT NOTICE_TYPE: Swift-BAT GRB Position TRIGGER_NUM: 578227, Seg_Num: 0 GRB_RA: 278.921d {+18h 35m 41s} (J2000), 279.116d {+18h 36m 28s} (current), 278.222d {+18h 32m 53s} (1950) GRB_DEC: -11.997d {-11d 59' 49"} (J2000), -11.985d {-11d 59' 06"} (current), -12.039d {-12d 02' 19"} (1950) GRB_ERROR: 3.00 [arcmin radius, statistical only] GRB_INTEN: 0 [cnts] Image_Peak=1264 [image_cnts] TRIGGER_DUR: 64.000 [sec] TRIGGER_INDEX: 20000 E_range: 15-50 keV BKG_INTEN: 0 [cnts] BKG_TIME: 0.00 SOD {00:00:00.00} UT BKG_DUR: 0 [sec] GRB_DATE: 16616 TJD; 324 DOY; 13/11/20 GRB_TIME: 52676.70 SOD {14:37:56.70} UT GRB_PHI: -33.95 [deg] GRB_THETA: 38.08 [deg] SOLN_STATUS: 0x13 RATE_SIGNIF: 0.00 [sigma] IMAGE_SIGNIF: 7.80 [sigma] MERIT_PARAMS: +1 +0 +0 +6 +1 -2 -100 +1 -74 +0 SUN_POSTN: 236.20d {+15h 44m 47s} -19.81d {-19d 48' 35"} SUN_DIST: 41.90 [deg] Sun_angle= -2.9 [hr] (East of Sun) MOON_POSTN: 91.73d {+06h 06m 55s} +19.16d {+19d 09' 21"} MOON_DIST: 169.90 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 20.47, -2.01 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 278.89, 11.17 [deg] ecliptic lon,lat of the burst (or transient) COMMENTS: SWIFT-BAT GRB Coordinates. COMMENTS: This is an image trigger. (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.) 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 = 358.90,17.25 [deg].
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Wed 20 Nov 13 14:41:53 UT NOTICE_TYPE: Swift-BAT GRB Lightcurve TRIGGER_NUM: 578227, Seg_Num: 0 GRB_RA: 278.921d {+18h 35m 41s} (J2000), 279.116d {+18h 36m 28s} (current), 278.222d {+18h 32m 53s} (1950) GRB_DEC: -11.997d {-11d 59' 49"} (J2000), -11.985d {-11d 59' 06"} (current), -12.039d {-12d 02' 19"} (1950) GRB_DATE: 16616 TJD; 324 DOY; 13/11/20 GRB_TIME: 52676.70 SOD {14:37:56.70} UT TRIGGER_INDEX: 20000 GRB_PHI: -33.95 [deg] GRB_THETA: 38.08 [deg] DELTA_TIME: 0.00 [sec] TRIGGER_DUR: 64.000 [sec] SOLN_STATUS: 0x13 RATE_SIGNIF: 0.00 [sigma] IMAGE_SIGNIF: 7.80 [sigma] LC_URL: sw00578227000msb.lc SUN_POSTN: 236.20d {+15h 44m 47s} -19.81d {-19d 48' 36"} SUN_DIST: 41.90 [deg] Sun_angle= -2.9 [hr] (East of Sun) MOON_POSTN: 91.75d {+06h 07m 01s} +19.15d {+19d 09' 15"} MOON_DIST: 169.92 [deg] MOON_ILLUM: 92 [%] GAL_COORDS: 20.47, -2.01 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 278.89, 11.17 [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 an image 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 = 358.90,17.25 [deg].
RA(J2000) = 18h 35m 41s Dec(J2000) = -11d 59' 49"with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). As is usual for image triggers, the immediately-available BAT lightcurve does not show strong variation.
RA(J2000) = 18h 35m 44.8s Dec(J2000) = -12d 01' 34.8"with an uncertainty of 3.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 50%.