(All information courtesy of the instrument teams.)
Previous IAU Circulars
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:38:12 UT NOTICE_TYPE: Swift-BAT GRB Position TRIGGER_NUM: 1036227, Seg_Num: 0 GRB_RA: 67.088d {+04h 28m 21s} (J2000), 67.443d {+04h 29m 46s} (current), 66.253d {+04h 25m 01s} (1950) GRB_DEC: +37.411d {+37d 24' 39"} (J2000), +37.456d {+37d 27' 23"} (current), +37.300d {+37d 18' 02"} (1950) GRB_ERROR: 3.00 [arcmin radius, statistical only] GRB_INTEN: 1647 [cnts] Image_Peak=112 [image_cnts] TRIGGER_DUR: 0.512 [sec] TRIGGER_INDEX: 69 E_range: 15-50 keV BKG_INTEN: 17239 [cnts] BKG_TIME: 23861.36 SOD {06:37:41.36} UT BKG_DUR: 8 [sec] GRB_DATE: 19281 TJD; 67 DOY; 21/03/08 GRB_TIME: 23876.85 SOD {06:37:56.85} UT GRB_PHI: -147.15 [deg] GRB_THETA: 44.95 [deg] SOLN_STATUS: 0x20000003 RATE_SIGNIF: 19.33 [sigma] IMAGE_SIGNIF: 8.39 [sigma] MERIT_PARAMS: +1 +0 +0 -1 +1 -1 +0 +1 -11 +0 SUN_POSTN: 348.88d {+23h 15m 32s} -4.78d {-04d 46' 35"} SUN_DIST: 83.90 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.61d {+19h 10m 27s} -25.06d {-25d 03' 19"} MOON_DIST: 143.81 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 163.51, -7.83 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 71.29, 15.45 [deg] ecliptic lon,lat of the burst (or transient) COMMENTS: SWIFT-BAT GRB Coordinates. COMMENTS: This is a rate 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 = 170.09,20.31 [deg]. COMMENTS: COMMENTS: NOTE: This BAT event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=636878281).
TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 08 Mar 21 06:38:22 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 49 TRIGGER_NUM: 636878281 GRB_RA: 64.550d {+04h 18m 12s} (J2000), 64.893d {+04h 19m 34s} (current), 63.742d {+04h 14m 58s} (1950) GRB_DEC: +33.900d {+33d 53' 60"} (J2000), +33.950d {+33d 57' 01"} (current), +33.779d {+33d 46' 43"} (1950) GRB_ERROR: 9.33 [deg radius, statistical plus systematic] GRB_INTEN: 155 [cnts/sec] DATA_SIGNIF: 11.90 [sigma] INTEG_TIME: 2.048 [sec] GRB_DATE: 19281 TJD; 67 DOY; 21/03/08 GRB_TIME: 23876.91 SOD {06:37:56.91} UT GRB_PHI: 60.00 [deg] GRB_THETA: 30.00 [deg] DATA_TIME_SCALE: 2.0480 [sec] HARD_RATIO: 1.86 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 84% GRB 2nd_MOST_LIKELY: 13% Generic SGR DETECTORS: 1,1,0, 0,0,0, 0,0,0, 0,0,0, 0,0, SUN_POSTN: 348.88d {+23h 15m 32s} -4.78d {-04d 46' 34"} SUN_DIST: 81.18 [deg] Sun_angle= -5.1 [hr] (East of Sun) MOON_POSTN: 287.61d {+19h 10m 27s} -25.06d {-25d 03' 18"} MOON_DIST: 142.05 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 164.63,-11.75 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 68.59, 12.33 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210308276/quicklook/glg_lc_medres34_bn210308276.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 222.15,11.30 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. COMMENTS: COMMENTS: NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=1036227).
TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 08 Mar 21 06:38:30 UT NOTICE_TYPE: Fermi-GBM Flight Position RECORD_NUM: 60 TRIGGER_NUM: 636878281 GRB_RA: 66.450d {+04h 25m 48s} (J2000), 66.808d {+04h 27m 14s} (current), 65.606d {+04h 22m 25s} (1950) GRB_DEC: +38.733d {+38d 43' 60"} (J2000), +38.780d {+38d 46' 48"} (current), +38.620d {+38d 37' 13"} (1950) GRB_ERROR: 4.90 [deg radius, statistical plus systematic] GRB_INTEN: 1076 [cnts/sec] DATA_SIGNIF: 77.80 [sigma] INTEG_TIME: 2.048 [sec] GRB_DATE: 19281 TJD; 67 DOY; 21/03/08 GRB_TIME: 23876.91 SOD {06:37:56.91} UT GRB_PHI: 60.00 [deg] GRB_THETA: 25.00 [deg] DATA_TIME_SCALE: 2.0480 [sec] HARD_RATIO: 0.88 LOC_ALGORITHM: 3 (version number of) MOST_LIKELY: 84% GRB 2nd_MOST_LIKELY: 14% GRO_J0422_32 DETECTORS: 1,1,0, 0,0,0, 0,0,0, 0,0,0, 0,0, SUN_POSTN: 348.88d {+23h 15m 32s} -4.78d {-04d 46' 34"} SUN_DIST: 83.66 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.61d {+19h 10m 28s} -25.06d {-25d 03' 18"} MOON_DIST: 143.11 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 162.20, -7.28 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 71.00, 16.83 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210308276/quicklook/glg_lc_medres34_bn210308276.gif COMMENTS: Fermi-GBM Flight-calculated Coordinates. COMMENTS: This trigger occurred at longitude,latitude = 222.15,11.30 [deg]. COMMENTS: The LC_URL file will not be created until ~15 min after the trigger. COMMENTS: COMMENTS: NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=1036227).
TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 08 Mar 21 06:38:41 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 59 TRIGGER_NUM: 636878281 GRB_RA: 63.480d {+04h 13m 55s} (J2000), 63.849d {+04h 15m 24s} (current), 62.610d {+04h 10m 26s} (1950) GRB_DEC: +42.830d {+42d 49' 48"} (J2000), +42.882d {+42d 52' 56"} (current), +42.704d {+42d 42' 14"} (1950) GRB_ERROR: 1.62 [deg radius, statistical only] DATA_SIGNIF: 89.70 [sigma] DATA_INTERVAL: 2.048 [sec] GRB_DATE: 19281 TJD; 67 DOY; 21/03/08 GRB_TIME: 23876.91 SOD {06:37:56.91} UT GRB_PHI: 51.00 [deg] GRB_THETA: 22.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 4173 (Gnd S/W Version number) SUN_POSTN: 348.88d {+23h 15m 32s} -4.78d {-04d 46' 34"} SUN_DIST: 82.37 [deg] Sun_angle= -5.0 [hr] (East of Sun) MOON_POSTN: 287.62d {+19h 10m 28s} -25.06d {-25d 03' 18"} MOON_DIST: 140.13 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 157.68, -5.98 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 69.43, 21.27 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210308276/quicklook/glg_lc_medres34_bn210308276.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_636878281.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. COMMENTS: COMMENTS: NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=1036227).
TITLE: GCN/FERMI NOTICE NOTICE_DATE: Mon 08 Mar 21 06:39:14 UT NOTICE_TYPE: Fermi-GBM Ground Position RECORD_NUM: 0 TRIGGER_NUM: 636878281 GRB_RA: 63.450d {+04h 13m 48s} (J2000), 63.819d {+04h 15m 17s} (current), 62.580d {+04h 10m 19s} (1950) GRB_DEC: +42.770d {+42d 46' 12"} (J2000), +42.822d {+42d 49' 21"} (current), +42.644d {+42d 38' 37"} (1950) GRB_ERROR: 1.18 [deg radius, statistical only] DATA_SIGNIF: 43.10 [sigma] DATA_INTERVAL: 3.072 [sec] GRB_DATE: 19281 TJD; 67 DOY; 21/03/08 GRB_TIME: 23876.91 SOD {06:37:56.91} UT GRB_PHI: 51.00 [deg] GRB_THETA: 22.00 [deg] E_RANGE: 44.032 - 279.965 [keV] LOC_ALGORITHM: 41731 (Gnd S/W Version number) SUN_POSTN: 348.89d {+23h 15m 32s} -4.78d {-04d 46' 34"} SUN_DIST: 82.33 [deg] Sun_angle= -5.0 [hr] (East of Sun) MOON_POSTN: 287.62d {+19h 10m 29s} -25.06d {-25d 03' 17"} MOON_DIST: 140.12 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 157.71, -6.03 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 69.39, 21.21 [deg] ecliptic lon,lat of the burst (or transient) LC_URL: http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2021/bn210308276/quicklook/glg_lc_medres34_bn210308276.gif POS_MAP_URL: http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_636878281.fits COMMENTS: Fermi-GBM Ground-calculated Coordinates. COMMENTS: In the LAT Field-of-view. 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. COMMENTS: COMMENTS: NOTE: This GBM event is temporally(0.0<100sec) coincident with the SWIFT_BAT event (trignum=1036227).
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:39:46 UT NOTICE_TYPE: Swift-XRT Position TRIGGER_NUM: 1036227, Seg_Num: 0 GRB_RA: 67.0767d {+04h 28m 18.40s} (J2000), 67.4314d {+04h 29m 43.54s} (current), 66.2409d {+04h 24m 57.81s} (1950) GRB_DEC: +37.4346d {+37d 26' 04.5"} (J2000), +37.4802d {+37d 28' 48.7"} (current), +37.3243d {+37d 19' 27.4"} (1950) GRB_ERROR: 6.3 [arcsec radius, statistical plus systematic, 90% containment] GRB_INTEN: 5.18e-10 [erg/cm2/sec] GRB_SIGNIF: 4.89 [sigma] IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23961.81 SOD {06:39:21.81} UT, 85.0 [sec] since BAT Trigger Time TAM[0-3]: 327.66 237.17 261.61 243.42 AMPLIFIER: 2 WAVEFORM: 134 SUN_POSTN: 348.89d {+23h 15m 33s} -4.78d {-04d 46' 33"} SUN_DIST: 83.89 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.63d {+19h 10m 31s} -25.05d {-25d 03' 16"} MOON_DIST: 143.78 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 163.49, -7.82 [deg] galactic lon,lat of the burst ECL_COORDS: 71.28, 15.47 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Coordinates. COMMENTS: The XRT position is 1.54 arcmin from the BAT position.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:39:56 UT NOTICE_TYPE: Swift-XRT Image TRIGGER_NUM: 1036227, Seg_Num: 0 GRB_RA: 67.0767d {+04h 28m 18.4s} (J2000), 67.4314d {+04h 29m 43.5s} (current), 66.2409d {+04h 24m 57.8s} (1950) GRB_DEC: +37.4346d {+37d 26' 04.5"} (J2000), +37.4802d {+37d 28' 48.7"} (current), +37.3243d {+37d 19' 27.4"} (1950) GRB_ERROR: 6.1 [arcsec, radius, statistical plus systematic] GRB_INTEN: 24 [cnts] IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23961.81 SOD {06:39:21.81} UT, 85.0 [sec] since BAT Trigger Time CENTROID_X: 273.80, raw= 274 [pixels] CENTROID_Y: 269.71, raw= 270 [pixels] ROLL: 259.00 [deg] GAIN: 1 MODE: 3, Long Image mode WAVEFORM: 134 EXPO_TIME: 2.50 [sec] GRB_POS_XRT_Y: -66.91 GRB_POS_XRT_Z: -79.19 IMAGE_URL: sw01036227000msxps_rw.img SUN_POSTN: 348.89d {+23h 15m 33s} -4.78d {-04d 46' 33"} SUN_DIST: 83.89 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.63d {+19h 10m 31s} -25.05d {-25d 03' 16"} MOON_DIST: 143.78 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 163.49, -7.82 [deg] galactic lon,lat of the burst ECL_COORDS: 71.28, 15.47 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Image.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:39:58 UT NOTICE_TYPE: Swift-XRT Processed Image TRIGGER_NUM: 1036227, Seg_Num: 0 GRB_RA: 67.0767d {+04h 28m 18.4s} (J2000), 67.4314d {+04h 29m 43.5s} (current), 66.2409d {+04h 24m 57.8s} (1950) GRB_DEC: +37.4346d {+37d 26' 04.5"} (J2000), +37.4802d {+37d 28' 48.7"} (current), +37.3243d {+37d 19' 27.4"} (1950) GRB_ERROR: 6.1 [arcsec, radius, statistical plus systematic] GRB_INTEN: 24 [cnts] IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23961.81 SOD {06:39:21.81} UT, 85.0 [sec] since BAT Trigger Time CENTROID_X: 273.80, raw= 274 [pixels] CENTROID_Y: 269.71, raw= 270 [pixels] ROLL: 259.00 [deg] GAIN: 1 MODE: 3, Long Image mode WAVEFORM: 134 EXPO_TIME: 2.50 [sec] GRB_POS_XRT_Y: -66.91 GRB_POS_XRT_Z: -79.19 IMAGE_URL: sw01036227000msxps_rw.img SUN_POSTN: 348.89d {+23h 15m 33s} -4.78d {-04d 46' 33"} SUN_DIST: 83.89 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.63d {+19h 10m 31s} -25.05d {-25d 03' 16"} MOON_DIST: 143.78 [deg] MOON_ILLUM: 27 [%] GAL_COORDS: 163.49, -7.82 [deg] galactic lon,lat of the burst ECL_COORDS: 71.28, 15.47 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Processed Image.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:41:24 UT NOTICE_TYPE: Swift-BAT GRB Lightcurve TRIGGER_NUM: 1036227, Seg_Num: 0 GRB_RA: 67.088d {+04h 28m 21s} (J2000), 67.443d {+04h 29m 46s} (current), 66.253d {+04h 25m 01s} (1950) GRB_DEC: +37.411d {+37d 24' 39"} (J2000), +37.456d {+37d 27' 23"} (current), +37.300d {+37d 18' 02"} (1950) GRB_DATE: 19281 TJD; 67 DOY; 21/03/08 GRB_TIME: 23876.85 SOD {06:37:56.85} UT TRIGGER_INDEX: 69 GRB_PHI: -147.15 [deg] GRB_THETA: 44.95 [deg] DELTA_TIME: 52.00 [sec] TRIGGER_DUR: 0.512 [sec] SOLN_STATUS: 0x3 RATE_SIGNIF: 19.33 [sigma] IMAGE_SIGNIF: 8.39 [sigma] LC_URL: sw01036227000msb.lc SUN_POSTN: 348.89d {+23h 15m 33s} -4.78d {-04d 46' 31"} SUN_DIST: 83.90 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.64d {+19h 10m 35s} -25.05d {-25d 03' 14"} MOON_DIST: 143.78 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.51, -7.83 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 71.29, 15.45 [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 a rate 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 = 170.09,20.31 [deg].
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:42:26 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.108d {+04h 28m 26s} (J2000) POINT_DEC: +37.420d {+37d 25' 11"} (J2000) POINT_ROLL: 258.999d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23971.41 SOD {06:39:31.41} UT, 94.6 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.630 N_STARS: 54 X_OFFSET: 576 [pixels] Y_OFFSET: 440 [pixels] X_MAX: 1535 [pixels] Y_MAX: 1399 [pixels] DET_THRESH: 16 PHOTO_THRESH: 9 SL_URL: sw01036227000msufc0094.fits SUN_POSTN: 348.89d {+23h 15m 33s} -4.78d {-04d 46' 30"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.66d {+19h 10m 37s} -25.05d {-25d 03' 13"} MOON_DIST: 143.79 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.45 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:42:37 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.108d {+04h 28m 26s} (J2000) POINT_DEC: +37.420d {+37d 25' 11"} (J2000) POINT_ROLL: 258.999d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23971.41 SOD {06:39:31.41} UT, 94.6 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.630 N_STARS: 54 X_OFFSET: 576 [pixels] Y_OFFSET: 440 [pixels] X_MAX: 1535 [pixels] Y_MAX: 1399 [pixels] DET_THRESH: 16 PHOTO_THRESH: 9 SL_URL: sw01036227000msufc0094.fits SUN_POSTN: 348.89d {+23h 15m 33s} -4.78d {-04d 46' 30"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.66d {+19h 10m 38s} -25.05d {-25d 03' 12"} MOON_DIST: 143.79 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.45 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Source List. COMMENTS: All 4 attachments are included.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:44:11 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.108d {+04h 28m 26s} (J2000) POINT_DEC: +37.420d {+37d 25' 11"} (J2000) ROLL: 258.999d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23971.41 SOD {06:39:31.41} UT, 94.6 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 636878398 X_OFFSET: 1006 [pixels] Y_OFFSET: 900 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1166 Y_GRB_POS: 1060 BINNING_INDEX: 1 IM_URL: sw01036227000msuni0121.fits SUN_POSTN: 348.89d {+23h 15m 33s} -4.77d {-04d 46' 29"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.67d {+19h 10m 42s} -25.05d {-25d 03' 10"} MOON_DIST: 143.77 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.45 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression).
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:44:17 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.108d {+04h 28m 26s} (J2000) POINT_DEC: +37.420d {+37d 25' 11"} (J2000) ROLL: 258.999d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23971.41 SOD {06:39:31.41} UT, 94.6 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 636878398 X_OFFSET: 1006 [pixels] Y_OFFSET: 900 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1166 Y_GRB_POS: 1060 BINNING_INDEX: 1 IM_URL: sw01036227000msuni0121.fits SUN_POSTN: 348.89d {+23h 15m 33s} -4.77d {-04d 46' 29"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.67d {+19h 10m 42s} -25.05d {-25d 03' 10"} MOON_DIST: 143.77 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.45 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression). COMMENTS: All 4 attachments are included.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:45:10 UT NOTICE_TYPE: Swift-UVOT Position TRIGGER_NUM: 1036227, Seg_Num: 0 GRB_RA: 67.0738d {+04h 28m 17.71s} (J2000), 67.4285d {+04h 29m 42.84s} (current), 66.2380d {+04h 24m 57.11s} (1950) GRB_DEC: +37.4338d {+37d 26' 01.6"} (J2000), +37.4794d {+37d 28' 45.8"} (current), +37.3235d {+37d 19' 24.5"} (1950) GRB_ERROR: 0.6 [arcsec radius, statistical only] GRB_MAG: 18.56 +/- 0.14 [mag] FILTER: 10, White IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 23968.00 SOD {06:39:28.00} UT, 91.2 [sec] since BAT Trigger Time SUN_POSTN: 348.89d {+23h 15m 33s} -4.77d {-04d 46' 28"} SUN_DIST: 83.89 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.68d {+19h 10m 44s} -25.05d {-25d 03' 09"} MOON_DIST: 143.74 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.49, -7.82 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 71.28, 15.47 [deg] ecliptic lon,lat of the burst (or transient) COMMENTS: SWIFT UVOT Position Notice. COMMENTS: This Notice was ground-generated -- not flight-generated. COMMENTS: The UVOT position is 8.3 arcsec from the XRT position. COMMENTS: Result based on Genie data. COMMENTS: Notice generated automatically.
RA(J2000) = 04h 28m 21s Dec(J2000) = +37d 24' 39"with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a few overlapping peaks with a duration of about 15 sec. The peak count rate was ~6000 counts/sec (15-350 keV), at ~3 sec after the trigger.
RA(J2000) = 04h 28m 18.34s Dec(J2000) = +37d 26' 07.11"with an uncertainty of 4.3 arcseconds (radius, 90% containment). This location is 94 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper.
RA(J2000) = 04:28:17.73 = 67.07388 DEC(J2000) = +37:26:02.0 = 37.43388with a 90%-confidence error radius of about 0.63 arc sec. This position is 8.5 arc sec. from the center of the XRT error circle. The estimated magnitude is 18.57 with a 1-sigma error of about 0.15. No correction has been made for the expected extinction corresponding to E(B-V) of 1.295.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:51:13 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) POINT_ROLL: 259.002d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24183.84 SOD {06:43:03.84} UT, 307.0 [sec] since BAT Trigger Time FILTER: 7, U BKG_MEAN: 0.981 N_STARS: 14 X_OFFSET: 686 [pixels] Y_OFFSET: 580 [pixels] X_MAX: 1645 [pixels] Y_MAX: 1539 [pixels] DET_THRESH: 9 PHOTO_THRESH: 4 SL_URL: sw01036227000msufc0306.fits SUN_POSTN: 348.89d {+23h 15m 34s} -4.77d {-04d 46' 22"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.75d {+19h 10m 59s} -25.05d {-25d 03' 00"} MOON_DIST: 143.72 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:51:28 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) POINT_ROLL: 259.002d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24183.84 SOD {06:43:03.84} UT, 307.0 [sec] since BAT Trigger Time FILTER: 7, U BKG_MEAN: 0.981 N_STARS: 14 X_OFFSET: 686 [pixels] Y_OFFSET: 580 [pixels] X_MAX: 1645 [pixels] Y_MAX: 1539 [pixels] DET_THRESH: 9 PHOTO_THRESH: 4 SL_URL: sw01036227000msufc0306.fits SUN_POSTN: 348.89d {+23h 15m 34s} -4.77d {-04d 46' 22"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.75d {+19h 11m 00s} -25.05d {-25d 03' 00"} MOON_DIST: 143.72 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Source List. COMMENTS: If you have elected to receive attachments: COMMENTS: The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:52:33 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) ROLL: 259.002d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24183.84 SOD {06:43:03.84} UT, 307.0 [sec] since BAT Trigger Time FILTER: 7, U EXPOSURE_ID: 636878610 X_OFFSET: 1006 [pixels] Y_OFFSET: 900 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1166 Y_GRB_POS: 1060 BINNING_INDEX: 1 IM_URL: sw01036227000msuni0333.fits SUN_POSTN: 348.89d {+23h 15m 34s} -4.77d {-04d 46' 21"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.76d {+19h 11m 02s} -25.05d {-25d 02' 58"} MOON_DIST: 143.71 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression).
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:52:47 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) ROLL: 259.002d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24183.84 SOD {06:43:03.84} UT, 307.0 [sec] since BAT Trigger Time FILTER: 7, U EXPOSURE_ID: 636878610 X_OFFSET: 1006 [pixels] Y_OFFSET: 900 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1166 Y_GRB_POS: 1060 BINNING_INDEX: 1 IM_URL: sw01036227000msuni0333.fits SUN_POSTN: 348.89d {+23h 15m 35s} -4.77d {-04d 46' 20"} SUN_DIST: 83.91 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.76d {+19h 11m 03s} -25.05d {-25d 02' 57"} MOON_DIST: 143.70 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Image. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression). COMMENTS: If you have elected to receive attachments: COMMENTS: The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:58:10 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) POINT_ROLL: 259.001d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24736.38 SOD {06:52:16.38} UT, 859.5 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.846 N_STARS: 157 X_OFFSET: 446 [pixels] Y_OFFSET: 340 [pixels] X_MAX: 1885 [pixels] Y_MAX: 1779 [pixels] DET_THRESH: 16 PHOTO_THRESH: 9 SL_URL: sw01036227000msufc0859.fits SUN_POSTN: 348.90d {+23h 15m 35s} -4.77d {-04d 46' 15"} SUN_DIST: 83.90 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.82d {+19h 11m 16s} -25.05d {-25d 02' 49"} MOON_DIST: 143.66 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:58:23 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) POINT_ROLL: 259.001d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24736.38 SOD {06:52:16.38} UT, 859.5 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.846 N_STARS: 157 X_OFFSET: 446 [pixels] Y_OFFSET: 340 [pixels] X_MAX: 1885 [pixels] Y_MAX: 1779 [pixels] DET_THRESH: 16 PHOTO_THRESH: 9 SL_URL: sw01036227000msufc0859.fits SUN_POSTN: 348.90d {+23h 15m 35s} -4.77d {-04d 46' 15"} SUN_DIST: 83.90 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.82d {+19h 11m 17s} -25.05d {-25d 02' 49"} MOON_DIST: 143.66 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Source List. COMMENTS: All 4 attachments are included.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:59:34 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) ROLL: 259.001d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24736.38 SOD {06:52:16.38} UT, 859.5 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 636879163 X_OFFSET: 1005 [pixels] Y_OFFSET: 899 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1165 Y_GRB_POS: 1059 BINNING_INDEX: 1 IM_URL: sw01036227000msuni0886.fits SUN_POSTN: 348.90d {+23h 15m 36s} -4.77d {-04d 46' 14"} SUN_DIST: 83.90 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.83d {+19h 11m 20s} -25.05d {-25d 02' 47"} MOON_DIST: 143.65 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Image. COMMENTS: The GRB Position came from the Window Position in the Mode Command. COMMENTS: The image has 2x2 binning (compression).
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 08 Mar 21 06:59:42 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1036227, Seg_Num: 0 POINT_RA: 67.110d {+04h 28m 26s} (J2000) POINT_DEC: +37.422d {+37d 25' 21"} (J2000) ROLL: 259.001d IMG_START_DATE: 19281 TJD; 67 DOY; 21/03/08 IMG_START_TIME: 24736.38 SOD {06:52:16.38} UT, 859.5 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 636879163 X_OFFSET: 1005 [pixels] Y_OFFSET: 899 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1165 Y_GRB_POS: 1059 BINNING_INDEX: 1 IM_URL: sw01036227000msuni0886.fits SUN_POSTN: 348.90d {+23h 15m 36s} -4.77d {-04d 46' 14"} SUN_DIST: 83.90 [deg] Sun_angle= -5.2 [hr] (East of Sun) MOON_POSTN: 287.83d {+19h 11m 20s} -25.05d {-25d 02' 47"} MOON_DIST: 143.65 [deg] MOON_ILLUM: 26 [%] GAL_COORDS: 163.52, -7.81 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 71.31, 15.46 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Processed Image. COMMENTS: The GRB Position came from the Window Position in the Mode Command. COMMENTS: The image has 2x2 binning (compression). COMMENTS: All 4 attachments are included.
T0+[hour] MID-UT T-EXP[sec] 5-sigma limits ------------------------------------------------------------------------------------------------ 4.5 11:51:53 4440 g'>17.6, Rc>17.8, Ic>17.8 ------------------------------------------------------------------------------------------------ T0+ : Elapsed time after the burst T-EXP: Total Exposure timeWe used the PS1 catalog for flux calibration. The magnitudes are expressed in the AB system. The images were processed in real-time through the MITSuME GPU reduction pipeline (Niwano et al. 2021, PASJ, Vol.73, Issue 1, Pages 4-24; https://github.com/MNiwano/Eclaire).
Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 21950 | MASTER- | C | 60 | 18.0 | 22210 | MASTER- | C | 60 | 15.8 | 22945 | MASTER- | C | 60 | 12.6 | 41008 | MASTER-SAAO | C | 180 | 13.9 | 56067 | MASTER-IAC | C | 180 | 18.5 |Filter C is a clear (unfiltred) band.
RA (J2000) = 04:28:17.73 = 67.07389 (deg.) Dec (J2000) = +37:26:02.1 = 37.43391 (deg.)with an estimated uncertainty of 0.46 arc sec. (radius, 90% confidence).
Filter T_start(s) T_stop(s) Exp(s) Mag b 765 1189 38 >18.62 uvm2 864 1115 38 >17.52 u 338 1164 284 >19.50 v 667 1090 58 >17.84 uvw1 1120 1140 19 >17.25 uvw2 815 1231 50 >17.91 white 126 275 292 18.54+-0.07 white 618 1213 205 >20.20The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 1.296 in the direction of the burst (Schlegel et al. 1998).
RA(J2000) = 04h 28m 19.9s Dec(J2000) = +37d 25' 42.9"with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 32%.
Date UT start t-T0 Filter Exp. OT Err. UL(3sigma) (mid, days) (s) 2021-03-08 13:00:45 0.27626 R 15*120 22.77 0.27 22.8 AZT-33IK 2021-03-08 16:32:07 0.42131 R 25*60 n/d n/d 21.8 AS-32The photometry is based on nearby USNO-B1.0 stars
USNO-B1.0_id R2 1274-0090800 15.34 1274-0090824 17.35