////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 29 Apr 26 23:24:30 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 49 TRIGGER_NUM: 799197847 GRB_RA: 274.117d {+18h 16m 28s} (J2000), 274.315d {+18h 17m 16s} (current), 273.740d {+18h 14m 58s} (1950) GRB_DEC: +43.500d {+43d 30' 00"} (J2000), +43.511d {+43d 30' 39"} (current), +43.481d {+43d 28' 51"} (1950) GRB_ERROR: 5.00 [deg radius, statistical plus systematic] GRB_INTEN: 3355 [cnts/sec] DATA_SIGNIF: 66.20 [sigma] INTEG_TIME: 0.128 [sec] GRB_DATE: 21159 TJD; 119 DOY; 26/04/29 GRB_TIME: 84242.02 SOD {23:24:02.02} UT GRB_PHI: 262.00 [deg] GRB_THETA: 50.00 [deg] DATA_TIME_SCALE: 0.1280 [sec] HARD_RATIO: 0.37 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 73% GRB 2nd_MOST_LIKELY: 24% Cyg X-1 SUN_POSTN: 37.25d {+02h 29m 01s} +14.70d {+14d 42' 10"} SUN_DIST: 101.93 [deg] Sun_angle= 8.2 [hr] (West of Sun) MOON_POSTN: 196.92d {+13h 07m 41s} -10.96d {-10d 57' 34"} MOON_DIST: 88.60 [deg] MOON_ILLUM: 97 [%] GAL_COORDS: 71.04, 24.33 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 277.61, 66.83 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260429975/quicklook/glg_lc_medres34_bn260429975.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 29 Apr 26 23:24:49 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 59 TRIGGER_NUM: 799197847 GRB_RA: 285.800d {+19h 03m 12s} (J2000), 286.095d {+19h 04m 23s} (current), 285.240d {+19h 00m 58s} (1950) GRB_DEC: +16.780d {+16d 46' 48"} (J2000), +16.820d {+16d 49' 13"} (current), +16.706d {+16d 42' 20"} (1950) GRB_ERROR: 2.08 [deg radius, statistical only] DATA_SIGNIF: 81.50 [sigma] DATA_INTERVAL: 0.128 [sec] GRB_DATE: 21159 TJD; 119 DOY; 26/04/29 GRB_TIME: 84242.02 SOD {23:24:02.02} UT GRB_PHI: 256.00 [deg] GRB_THETA: 78.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 37.25d {+02h 29m 01s} +14.70d {+14d 42' 10"} SUN_DIST: 105.11 [deg] Sun_angle= 7.4 [hr] (West of Sun) MOON_POSTN: 196.92d {+13h 07m 42s} -10.96d {-10d 57' 38"} MOON_DIST: 92.37 [deg] MOON_ILLUM: 97 [%] GAL_COORDS: 49.22, 5.04 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 289.64, 39.15 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260429975/quicklook/glg_lc_medres34_bn260429975.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_799197847.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. 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: Wed 29 Apr 26 23:24:59 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 68 TRIGGER_NUM: 799197847 GRB_DATE: 21159 TJD; 119 DOY; 26/04/29 GRB_TIME: 84242.02 SOD {23:24:02.02} UT TRIGGER_SIGNIF: 16.7 [sigma] TRIGGER_DUR: 0.016 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 1 DETECTORS: 0,0,1, 1,1,0, 1,1,1, 1,1,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260429975/quicklook/glg_lc_medres34_bn260429975.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 12.18,17.95 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Wed 29 Apr 26 23:33:22 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 799197847 GRB_RA: 283.920d {+18h 55m 41s} (J2000), 284.211d {+18h 56m 51s} (current), 283.368d {+18h 53m 28s} (1950) GRB_DEC: +18.100d {+18d 06' 00"} (J2000), +18.136d {+18d 08' 08"} (current), +18.034d {+18d 02' 04"} (1950) GRB_ERROR: 2.61 [deg radius, statistical only] GRB_DATE: 21159 TJD; 119 DOY; 26/04/29 GRB_TIME: 84242.02 SOD {23:24:02.02} UT GRB_PHI: 255.00 [deg] GRB_THETA: 76.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 37.26d {+02h 29m 02s} +14.70d {+14d 42' 17"} SUN_DIST: 106.31 [deg] Sun_angle= 7.5 [hr] (West of Sun) MOON_POSTN: 196.99d {+13h 07m 58s} -10.99d {-10d 59' 34"} MOON_DIST: 90.81 [deg] MOON_ILLUM: 97 [%] GAL_COORDS: 49.60, 7.24 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 287.55, 40.69 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260429975/quicklook/glg_lc_medres34_bn260429975.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260429975/quicklook/glg_locplot_all_bn260429975.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 Short GRB.