////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Fri 24 Apr 26 15:30:29 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 798737427 GRB_DATE: 21154 TJD; 114 DOY; 26/04/24 GRB_TIME: 55822.50 SOD {15:30:22.50} UT TRIGGER_SIGNIF: 5.5 [sigma] TRIGGER_DUR: 0.128 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 6 DETECTORS: 0,0,0, 0,0,0, 0,1,0, 1,0,0, 0,0, LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260424646/quicklook/glg_lc_medres34_bn260424646.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 42.87,-25.45 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Fri 24 Apr 26 15:30:41 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 44 TRIGGER_NUM: 798737427 GRB_RA: 170.567d {+11h 22m 16s} (J2000), 170.912d {+11h 23m 39s} (current), 169.909d {+11h 19m 38s} (1950) GRB_DEC: +19.850d {+19d 51' 00"} (J2000), +19.705d {+19d 42' 20"} (current), +20.124d {+20d 07' 28"} (1950) GRB_ERROR: 19.28 [deg radius, statistical plus systematic] GRB_INTEN: 187 [cnts/sec] DATA_SIGNIF: 7.10 [sigma] INTEG_TIME: 0.512 [sec] GRB_DATE: 21154 TJD; 114 DOY; 26/04/24 GRB_TIME: 55822.50 SOD {15:30:22.50} UT GRB_PHI: 196.00 [deg] GRB_THETA: 40.00 [deg] DATA_TIME_SCALE: 0.5120 [sec] HARD_RATIO: 0.46 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 70% GRB 2nd_MOST_LIKELY: 27% Distant Particles DETECTORS: 0,0,0, 0,0,0, 0,1,0, 1,0,0, 0,0, SUN_POSTN: 32.21d {+02h 08m 49s} +13.01d {+13d 00' 31"} SUN_DIST: 127.83 [deg] Sun_angle= -9.2 [hr] (East of Sun) MOON_POSTN: 134.45d {+08h 57m 47s} +19.64d {+19d 38' 22"} MOON_DIST: 34.27 [deg] MOON_ILLUM: 56 [%] GAL_COORDS: 227.79, 68.34 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 163.41, 14.49 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260424646/quicklook/glg_lc_medres34_bn260424646.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 42.87,-25.45 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Fri 24 Apr 26 15:30:59 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 57 TRIGGER_NUM: 798737427 GRB_RA: 171.120d {+11h 24m 29s} (J2000), 171.463d {+11h 25m 51s} (current), 170.468d {+11h 21m 52s} (1950) GRB_DEC: +14.870d {+14d 52' 12"} (J2000), +14.725d {+14d 43' 31"} (current), +15.145d {+15d 08' 41"} (1950) GRB_ERROR: 12.07 [deg radius, statistical only] DATA_SIGNIF: 7.80 [sigma] DATA_INTERVAL: 0.512 [sec] GRB_DATE: 21154 TJD; 114 DOY; 26/04/24 GRB_TIME: 55822.50 SOD {15:30:22.50} UT GRB_PHI: 189.00 [deg] GRB_THETA: 42.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 32.21d {+02h 08m 49s} +13.01d {+13d 00' 31"} SUN_DIST: 131.05 [deg] Sun_angle= -9.3 [hr] (East of Sun) MOON_POSTN: 134.45d {+08h 57m 48s} +19.64d {+19d 38' 18"} MOON_DIST: 35.63 [deg] MOON_ILLUM: 56 [%] GAL_COORDS: 239.75, 66.35 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 165.95, 10.14 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260424646/quicklook/glg_lc_medres34_bn260424646.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_798737427.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: In the LAT Field-of-view. 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: Fri 24 Apr 26 15:39:40 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 798737427 GRB_RA: 171.740d {+11h 26m 58s} (J2000), 172.085d {+11h 28m 20s} (current), 171.084d {+11h 24m 20s} (1950) GRB_DEC: +20.240d {+20d 14' 24"} (J2000), +20.095d {+20d 05' 42"} (current), +20.515d {+20d 30' 55"} (1950) GRB_ERROR: 14.80 [deg radius, statistical only] GRB_DATE: 21154 TJD; 114 DOY; 26/04/24 GRB_TIME: 55822.50 SOD {15:30:22.50} UT GRB_PHI: 197.00 [deg] GRB_THETA: 41.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 32.21d {+02h 08m 51s} +13.01d {+13d 00' 38"} SUN_DIST: 128.48 [deg] Sun_angle= -9.3 [hr] (East of Sun) MOON_POSTN: 134.53d {+08h 58m 07s} +19.61d {+19d 36' 33"} MOON_DIST: 35.25 [deg] MOON_ILLUM: 56 [%] GAL_COORDS: 228.03, 69.50 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 164.28, 15.29 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260424646/quicklook/glg_lc_medres34_bn260424646.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260424646/quicklook/glg_locplot_all_bn260424646.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: This is likely a Short GRB.