////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Sat 20 Dec 25 23:38:06 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 787966689 GRB_DATE: 21029 TJD; 354 DOY; 25/12/20 GRB_TIME: 85084.63 SOD {23:38:04.63} UT TRIGGER_SIGNIF: 8.3 [sigma] TRIGGER_DUR: 0.016 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 1 DETECTORS: 0,0,0, 1,0,0, 0,1,1, 0,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251220985/quicklook/glg_lc_medres34_bn251220985.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 225.42,-20.38 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Sat 20 Dec 25 23:38:08 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 49 TRIGGER_NUM: 787966689 GRB_RA: 272.800d {+18h 11m 12s} (J2000), 272.991d {+18h 11m 58s} (current), 272.432d {+18h 09m 44s} (1950) GRB_DEC: +44.383d {+44d 22' 60"} (J2000), +44.391d {+44d 23' 26"} (current), +44.371d {+44d 22' 14"} (1950) GRB_ERROR: 5.42 [deg radius, statistical plus systematic] GRB_INTEN: 1210 [cnts/sec] DATA_SIGNIF: 23.20 [sigma] INTEG_TIME: 0.128 [sec] GRB_DATE: 21029 TJD; 354 DOY; 25/12/20 GRB_TIME: 85084.63 SOD {23:38:04.63} UT GRB_PHI: 252.00 [deg] GRB_THETA: 25.00 [deg] DATA_TIME_SCALE: 0.1280 [sec] HARD_RATIO: 0.42 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 80% GRB 2nd_MOST_LIKELY: 16% Cyg X-1 DETECTORS: 0,0,0, 1,0,0, 0,1,1, 0,0,0, 0,0, SUN_POSTN: 269.29d {+17h 57m 09s} -23.43d {-23d 26' 00"} SUN_DIST: 67.91 [deg] Sun_angle= -0.2 [hr] (East of Sun) MOON_POSTN: 280.77d {+18h 43m 05s} -27.54d {-27d 32' 32"} MOON_DIST: 72.28 [deg] MOON_ILLUM: 1 [%] GAL_COORDS: 71.72, 25.47 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 275.30, 67.77 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251220985/quicklook/glg_lc_medres34_bn251220985.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 225.42,-20.38 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Sat 20 Dec 25 23:38:23 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 59 TRIGGER_NUM: 787966689 GRB_RA: 268.860d {+17h 55m 26s} (J2000), 269.045d {+17h 56m 11s} (current), 268.503d {+17h 54m 01s} (1950) GRB_DEC: +45.570d {+45d 34' 12"} (J2000), +45.567d {+45d 34' 02"} (current), +45.576d {+45d 34' 35"} (1950) GRB_ERROR: 1.85 [deg radius, statistical only] DATA_SIGNIF: 25.70 [sigma] DATA_INTERVAL: 0.128 [sec] GRB_DATE: 21029 TJD; 354 DOY; 25/12/20 GRB_TIME: 85084.63 SOD {23:38:04.63} UT GRB_PHI: 253.00 [deg] GRB_THETA: 28.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 269.29d {+17h 57m 09s} -23.43d {-23d 26' 00"} SUN_DIST: 69.00 [deg] Sun_angle= 0.0 [hr] (West of Sun) MOON_POSTN: 280.77d {+18h 43m 06s} -27.54d {-27d 32' 31"} MOON_DIST: 73.88 [deg] MOON_ILLUM: 1 [%] GAL_COORDS: 72.35, 28.45 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 267.77, 69.00 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251220985/quicklook/glg_lc_medres34_bn251220985.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_787966689.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: In the LAT Field-of-view. COMMENTS: Bright hard burst in the GBM. 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. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Sat 20 Dec 25 23:47:22 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 787966689 GRB_RA: 251.350d {+16h 45m 24s} (J2000), 251.531d {+16h 46m 07s} (current), 251.002d {+16h 44m 00s} (1950) GRB_DEC: +47.920d {+47d 55' 12"} (J2000), +47.874d {+47d 52' 26"} (current), +48.010d {+48d 00' 35"} (1950) GRB_ERROR: 6.40 [deg radius, statistical only] GRB_DATE: 21029 TJD; 354 DOY; 25/12/20 GRB_TIME: 85084.63 SOD {23:38:04.63} UT GRB_PHI: 257.00 [deg] GRB_THETA: 40.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 269.29d {+17h 57m 10s} -23.43d {-23d 26' 00"} SUN_DIST: 73.07 [deg] Sun_angle= 1.2 [hr] (West of Sun) MOON_POSTN: 280.86d {+18h 43m 26s} -27.53d {-27d 32' 00"} MOON_DIST: 79.88 [deg] MOON_ILLUM: 1 [%] GAL_COORDS: 74.17, 40.55 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 233.28, 68.99 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251220985/quicklook/glg_lc_medres34_bn251220985.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2025/bn251220985/quicklook/glg_locplot_all_bn251220985.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: In the LAT Field-of-view. COMMENTS: Bright hard burst in the GBM. COMMENTS: This is likely a Short GRB.