////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Tue 21 Apr 26 02:12:50 UT NOTICE_TYPE: Fermi-GBM Alert RECORD_NUM: 1 TRIGGER_NUM: 798430369 GRB_DATE: 21151 TJD; 111 DOY; 26/04/21 GRB_TIME: 7964.32 SOD {02:12:44.32} UT TRIGGER_SIGNIF: 5.7 [sigma] TRIGGER_DUR: 0.128 [sec] E_RANGE: 3-4 [chan] 47-291 [keV] ALGORITHM: 6 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/2026/bn260421092/quicklook/glg_lc_medres34_bn260421092.gif COMMENTS: Fermi-GBM Trigger Alert. COMMENTS: This trigger occurred at longitude,latitude = 175.15,1.32 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Tue 21 Apr 26 02:13:13 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 48 TRIGGER_NUM: 798430369 GRB_RA: 181.483d {+12h 05m 56s} (J2000), 181.808d {+12h 07m 14s} (current), 180.860d {+12h 03m 26s} (1950) GRB_DEC: +71.100d {+71d 05' 60"} (J2000), +70.954d {+70d 57' 13"} (current), +71.378d {+71d 22' 42"} (1950) GRB_ERROR: 15.85 [deg radius, statistical plus systematic] GRB_INTEN: 170 [cnts/sec] DATA_SIGNIF: 10.20 [sigma] INTEG_TIME: 1.024 [sec] GRB_DATE: 21151 TJD; 111 DOY; 26/04/21 GRB_TIME: 7964.32 SOD {02:12:44.32} UT GRB_PHI: 229.00 [deg] GRB_THETA: 50.00 [deg] DATA_TIME_SCALE: 1.0240 [sec] HARD_RATIO: 0.30 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 95% GRB 2nd_MOST_LIKELY: 3% Generic Transient DETECTORS: 0,0,0, 1,0,0, 0,1,1, 0,0,0, 0,0, SUN_POSTN: 28.87d {+01h 55m 29s} +11.82d {+11d 49' 18"} SUN_DIST: 95.21 [deg] Sun_angle= -10.2 [hr] (East of Sun) MOON_POSTN: 79.77d {+05h 19m 05s} +28.11d {+28d 06' 44"} MOON_DIST: 67.33 [deg] MOON_ILLUM: 18 [%] GAL_COORDS: 128.17, 45.56 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 131.30, 60.62 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260421092/quicklook/glg_lc_medres34_bn260421092.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 175.15,1.32 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. ////////////////////////////////////////////////////////////////////// TITLE: GCN/FERMI NOTICE NOTICE_DATE: Tue 21 Apr 26 02:13:31 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 59 TRIGGER_NUM: 798430369 GRB_RA: 182.640d {+12h 10m 34s} (J2000), 182.963d {+12h 11m 51s} (current), 182.022d {+12h 08m 05s} (1950) GRB_DEC: +62.980d {+62d 58' 48"} (J2000), +62.834d {+62d 50' 01"} (current), +63.258d {+63d 15' 29"} (1950) GRB_ERROR: 12.40 [deg radius, statistical only] DATA_SIGNIF: 11.30 [sigma] DATA_INTERVAL: 1.024 [sec] GRB_DATE: 21151 TJD; 111 DOY; 26/04/21 GRB_TIME: 7964.32 SOD {02:12:44.32} UT GRB_PHI: 220.00 [deg] GRB_THETA: 54.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 28.87d {+01h 55m 29s} +11.82d {+11d 49' 18"} SUN_DIST: 102.69 [deg] Sun_angle= -10.3 [hr] (East of Sun) MOON_POSTN: 79.78d {+05h 19m 06s} +28.11d {+28d 06' 45"} MOON_DIST: 70.89 [deg] MOON_ILLUM: 18 [%] GAL_COORDS: 130.72, 53.53 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 143.55, 55.66 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260421092/quicklook/glg_lc_medres34_bn260421092.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_798430369.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: Tue 21 Apr 26 02:14:41 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 0 TRIGGER_NUM: 798430369 GRB_RA: 253.970d {+16h 55m 53s} (J2000), 254.398d {+16h 57m 35s} (current), 253.158d {+16h 52m 38s} (1950) GRB_DEC: -32.770d {-32d 46' 11"} (J2000), -32.810d {-32d 48' 35"} (current), -32.691d {-32d 41' 27"} (1950) GRB_ERROR: 3.38 [deg radius, statistical only] DATA_SIGNIF: 7.40 [sigma] DATA_INTERVAL: 7.168 [sec] GRB_DATE: 21151 TJD; 111 DOY; 26/04/21 GRB_TIME: 7964.32 SOD {02:12:44.32} UT GRB_PHI: 213.00 [deg] GRB_THETA: 165.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 28.87d {+01h 55m 30s} +11.82d {+11d 49' 19"} SUN_DIST: 133.42 [deg] Sun_angle= 9.0 [hr] (West of Sun) MOON_POSTN: 79.79d {+05h 19m 09s} +28.11d {+28d 06' 47"} MOON_DIST: 173.39 [deg] MOON_ILLUM: 18 [%] GAL_COORDS: 350.76, 6.59 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 256.36,-10.09 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260421092/quicklook/glg_lc_medres34_bn260421092.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_798430369.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: This is likely a Long GRB. 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: Tue 21 Apr 26 02:22:04 UT NOTICE_TYPE: Fermi-GBM Final Position RECORD_NUM: 0 TRIGGER_NUM: 798430369 GRB_RA: 198.810d {+13h 15m 14s} (J2000), 199.054d {+13h 16m 13s} (current), 198.344d {+13h 13m 23s} (1950) GRB_DEC: +62.940d {+62d 56' 24"} (J2000), +62.801d {+62d 48' 05"} (current), +63.204d {+63d 12' 14"} (1950) GRB_ERROR: 8.17 [deg radius, statistical only] GRB_DATE: 21151 TJD; 111 DOY; 26/04/21 GRB_TIME: 7964.32 SOD {02:12:44.32} UT GRB_PHI: 225.00 [deg] GRB_THETA: 60.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 28.88d {+01h 55m 31s} +11.82d {+11d 49' 26"} SUN_DIST: 104.99 [deg] Sun_angle= -11.3 [hr] (East of Sun) MOON_POSTN: 79.87d {+05h 19m 30s} +28.12d {+28d 07' 01"} MOON_DIST: 77.14 [deg] MOON_ILLUM: 18 [%] GAL_COORDS: 118.33, 53.98 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 152.97, 61.09 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260421092/quicklook/glg_lc_medres34_bn260421092.gif LOC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2026/bn260421092/quicklook/glg_locplot_all_bn260421092.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.