(All information courtesy of the instrument teams.)
Previous IAU Circulars
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:06:23 UT NOTICE_TYPE: Swift-BAT GRB Position TRIGGER_NUM: 1093611, Seg_Num: 0 GRB_RA: 191.947d {+12h 47m 47s} (J2000), 192.243d {+12h 48m 58s} (current), 191.276d {+12h 45m 06s} (1950) GRB_DEC: -28.744d {-28d 44' 38"} (J2000), -28.864d {-28d 51' 51"} (current), -28.472d {-28d 28' 17"} (1950) GRB_ERROR: 3.00 [arcmin radius, statistical only] GRB_INTEN: 9731 [cnts] Image_Peak=271 [image_cnts] TRIGGER_DUR: 4.096 [sec] TRIGGER_INDEX: 448 E_range: 15-50 keV BKG_INTEN: 83238 [cnts] BKG_TIME: 72267.54 SOD {20:04:27.54} UT BKG_DUR: 40 [sec] GRB_DATE: 19596 TJD; 17 DOY; 22/01/17 GRB_TIME: 72328.15 SOD {20:05:28.15} UT GRB_PHI: 31.07 [deg] GRB_THETA: 12.52 [deg] SOLN_STATUS: 0x3 RATE_SIGNIF: 11.04 [sigma] IMAGE_SIGNIF: 7.14 [sigma] MERIT_PARAMS: +1 +0 +0 +2 +1 -3 +0 +0 +8 +0 SUN_POSTN: 299.77d {+19h 59m 06s} -20.62d {-20d 37' 08"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.87d {+07h 55m 30s} +25.02d {+25d 01' 12"} MOON_DIST: 88.68 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.97, 34.12 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 202.64,-21.66 [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 = 202.24,-9.18 [deg].
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:07:29 UT NOTICE_TYPE: Swift-XRT Position TRIGGER_NUM: 1093611, Seg_Num: 0 GRB_RA: 191.9514d {+12h 47m 48.33s} (J2000), 192.2480d {+12h 49m 00.47s} (current), 191.2803d {+12h 45m 07.27s} (1950) GRB_DEC: -28.7446d {-28d 44' 40.5"} (J2000), -28.8646d {-28d 51' 52.5"} (current), -28.4719d {-28d 28' 18.8"} (1950) GRB_ERROR: 6.5 [arcsec radius, statistical plus systematic, 90% containment] GRB_INTEN: 4.69e-10 [erg/cm2/sec] GRB_SIGNIF: 4.58 [sigma] IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72424.00 SOD {20:07:04.00} UT, 95.9 [sec] since BAT Trigger Time TAM[0-3]: 327.69 237.13 261.81 243.30 AMPLIFIER: 2 WAVEFORM: 134 SUN_POSTN: 299.78d {+19h 59m 06s} -20.62d {-20d 37' 07"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.88d {+07h 55m 32s} +25.02d {+25d 01' 07"} MOON_DIST: 88.68 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.97, 34.12 [deg] galactic lon,lat of the burst ECL_COORDS: 202.65,-21.65 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Coordinates. COMMENTS: The XRT position is 0.24 arcmin from the BAT position.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:07:39 UT NOTICE_TYPE: Swift-XRT Image TRIGGER_NUM: 1093611, Seg_Num: 0 GRB_RA: 191.9514d {+12h 47m 48.3s} (J2000), 192.2480d {+12h 49m 00.4s} (current), 191.2803d {+12h 45m 07.2s} (1950) GRB_DEC: -28.7446d {-28d 44' 40.5"} (J2000), -28.8646d {-28d 51' 52.5"} (current), -28.4719d {-28d 28' 18.8"} (1950) GRB_ERROR: 6.5 [arcsec, radius, statistical plus systematic] GRB_INTEN: 21 [cnts] IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72424.00 SOD {20:07:04.00} UT, 95.9 [sec] since BAT Trigger Time CENTROID_X: 320.90, raw= 321 [pixels] CENTROID_Y: 300.12, raw= 300 [pixels] ROLL: 116.64 [deg] GAIN: 1 MODE: 3, Long Image mode WAVEFORM: 134 EXPO_TIME: 2.50 [sec] GRB_POS_XRT_Y: 4.77 GRB_POS_XRT_Z: 31.83 IMAGE_URL: sw01093611000msxps_rw.img SUN_POSTN: 299.78d {+19h 59m 06s} -20.62d {-20d 37' 07"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.89d {+07h 55m 32s} +25.02d {+25d 01' 06"} MOON_DIST: 88.68 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.97, 34.12 [deg] galactic lon,lat of the burst ECL_COORDS: 202.65,-21.65 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Image.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:07:41 UT NOTICE_TYPE: Swift-XRT Processed Image TRIGGER_NUM: 1093611, Seg_Num: 0 GRB_RA: 191.9514d {+12h 47m 48.3s} (J2000), 192.2480d {+12h 49m 00.4s} (current), 191.2803d {+12h 45m 07.2s} (1950) GRB_DEC: -28.7446d {-28d 44' 40.5"} (J2000), -28.8646d {-28d 51' 52.5"} (current), -28.4719d {-28d 28' 18.8"} (1950) GRB_ERROR: 6.5 [arcsec, radius, statistical plus systematic] GRB_INTEN: 21 [cnts] IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72424.00 SOD {20:07:04.00} UT, 95.9 [sec] since BAT Trigger Time CENTROID_X: 320.90, raw= 321 [pixels] CENTROID_Y: 300.12, raw= 300 [pixels] ROLL: 116.64 [deg] GAIN: 1 MODE: 3, Long Image mode WAVEFORM: 134 EXPO_TIME: 2.50 [sec] GRB_POS_XRT_Y: 4.77 GRB_POS_XRT_Z: 31.83 IMAGE_URL: sw01093611000msxps_rw.img SUN_POSTN: 299.78d {+19h 59m 06s} -20.62d {-20d 37' 07"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.89d {+07h 55m 33s} +25.02d {+25d 01' 06"} MOON_DIST: 88.68 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.97, 34.12 [deg] galactic lon,lat of the burst ECL_COORDS: 202.65,-21.65 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Processed Image.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:09:50 UT NOTICE_TYPE: Swift-BAT GRB Lightcurve TRIGGER_NUM: 1093611, Seg_Num: 0 GRB_RA: 191.947d {+12h 47m 47s} (J2000), 192.243d {+12h 48m 58s} (current), 191.276d {+12h 45m 06s} (1950) GRB_DEC: -28.744d {-28d 44' 38"} (J2000), -28.864d {-28d 51' 51"} (current), -28.472d {-28d 28' 17"} (1950) GRB_DATE: 19596 TJD; 17 DOY; 22/01/17 GRB_TIME: 72328.15 SOD {20:05:28.15} UT TRIGGER_INDEX: 448 GRB_PHI: 31.07 [deg] GRB_THETA: 12.52 [deg] DELTA_TIME: 19.00 [sec] TRIGGER_DUR: 4.096 [sec] SOLN_STATUS: 0x3 RATE_SIGNIF: 11.04 [sigma] IMAGE_SIGNIF: 7.14 [sigma] LC_URL: sw01093611000msb.lc SUN_POSTN: 299.78d {+19h 59m 06s} -20.62d {-20d 37' 06"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.91d {+07h 55m 37s} +25.02d {+25d 00' 57"} MOON_DIST: 88.66 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.97, 34.12 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 202.64,-21.66 [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 = 202.24,-9.18 [deg].
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:15:29 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) POINT_ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72432.28 SOD {20:07:12.28} UT, 104.1 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 8.534 N_STARS: 36 X_OFFSET: 400 [pixels] Y_OFFSET: 608 [pixels] X_MAX: 1359 [pixels] Y_MAX: 1567 [pixels] DET_THRESH: 26 PHOTO_THRESH: 16 SL_URL: sw01093611000msufc0104.fits SUN_POSTN: 299.78d {+19h 59m 07s} -20.62d {-20d 37' 03"} SUN_DIST: 94.40 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.96d {+07h 55m 50s} +25.01d {+25d 00' 32"} MOON_DIST: 88.63 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:15:39 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) POINT_ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72432.28 SOD {20:07:12.28} UT, 104.1 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 8.534 N_STARS: 36 X_OFFSET: 400 [pixels] Y_OFFSET: 608 [pixels] X_MAX: 1359 [pixels] Y_MAX: 1567 [pixels] DET_THRESH: 26 PHOTO_THRESH: 16 SL_URL: sw01093611000msufc0104.fits SUN_POSTN: 299.78d {+19h 59m 07s} -20.62d {-20d 37' 03"} SUN_DIST: 94.40 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.96d {+07h 55m 50s} +25.01d {+25d 00' 32"} MOON_DIST: 88.63 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [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 17 Jan 22 20:18:56 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72432.28 SOD {20:07:12.28} UT, 104.1 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 664142860 X_OFFSET: 734 [pixels] Y_OFFSET: 912 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 894 Y_GRB_POS: 1072 BINNING_INDEX: 1 IM_URL: sw01093611000msuni0133.fits SUN_POSTN: 299.78d {+19h 59m 08s} -20.62d {-20d 37' 01"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.99d {+07h 55m 57s} +25.00d {+25d 00' 17"} MOON_DIST: 88.60 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [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 17 Jan 22 20:19:15 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) POINT_ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72590.58 SOD {20:09:50.58} UT, 262.4 [sec] since BAT Trigger Time FILTER: 7, U BKG_MEAN: 0.682 N_STARS: 16 X_OFFSET: 414 [pixels] Y_OFFSET: 592 [pixels] X_MAX: 1373 [pixels] Y_MAX: 1551 [pixels] DET_THRESH: 7 PHOTO_THRESH: 3 SL_URL: sw01093611000msufc0262.fits SUN_POSTN: 299.78d {+19h 59m 08s} -20.62d {-20d 37' 01"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.99d {+07h 55m 58s} +25.00d {+25d 00' 16"} MOON_DIST: 88.60 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List. COMMENTS: The Pointing RA,Dec,Roll values came from the 1st SrcList Notice.
RA(J2000) = 12h 47m 47s Dec(J2000) = -28d 44' 38"with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a complex structure with a duration of about 20 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~1 sec after the trigger.
RA(J2000) = 12h 47m 48.34s Dec(J2000) = -28d 44' 40.6"with an uncertainty of 6.5 arcseconds (radius, 90% containment). This location is 14 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:19:09 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72432.28 SOD {20:07:12.28} UT, 104.1 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 664142860 X_OFFSET: 734 [pixels] Y_OFFSET: 912 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 894 Y_GRB_POS: 1072 BINNING_INDEX: 1 IM_URL: sw01093611000msuni0133.fits SUN_POSTN: 299.78d {+19h 59m 08s} -20.62d {-20d 37' 01"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.99d {+07h 55m 58s} +25.00d {+25d 00' 16"} MOON_DIST: 88.60 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [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 17 Jan 22 20:19:32 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) POINT_ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72590.58 SOD {20:09:50.58} UT, 262.4 [sec] since BAT Trigger Time FILTER: 7, U BKG_MEAN: 0.682 N_STARS: 16 X_OFFSET: 414 [pixels] Y_OFFSET: 592 [pixels] X_MAX: 1373 [pixels] Y_MAX: 1551 [pixels] DET_THRESH: 7 PHOTO_THRESH: 3 SL_URL: sw01093611000msufc0262.fits SUN_POSTN: 299.78d {+19h 59m 08s} -20.62d {-20d 37' 01"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 118.99d {+07h 55m 59s} +25.00d {+25d 00' 15"} MOON_DIST: 88.60 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [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 17 Jan 22 20:20:30 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72590.58 SOD {20:09:50.58} UT, 262.4 [sec] since BAT Trigger Time FILTER: 7, U EXPOSURE_ID: 664143019 X_OFFSET: 734 [pixels] Y_OFFSET: 912 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 894 Y_GRB_POS: 1072 BINNING_INDEX: 1 IM_URL: sw01093611000msuni0291.fits SUN_POSTN: 299.78d {+19h 59m 08s} -20.62d {-20d 37' 00"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 119.00d {+07h 56m 01s} +25.00d {+25d 00' 10"} MOON_DIST: 88.59 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Image. COMMENTS: The Pointing RA,Dec,Roll values came from the 1st Image Notice. COMMENTS: The GRB Position came from the XRT Position Command. COMMENTS: The image has 2x2 binning (compression).
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 17 Jan 22 20:20:38 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1093611, Seg_Num: 0 POINT_RA: 191.959d {+12h 47m 50s} (J2000) POINT_DEC: -28.750d {-28d 45' 01"} (J2000) ROLL: 116.641d IMG_START_DATE: 19596 TJD; 17 DOY; 22/01/17 IMG_START_TIME: 72590.58 SOD {20:09:50.58} UT, 262.4 [sec] since BAT Trigger Time FILTER: 7, U EXPOSURE_ID: 664143019 X_OFFSET: 734 [pixels] Y_OFFSET: 912 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 894 Y_GRB_POS: 1072 BINNING_INDEX: 1 IM_URL: sw01093611000msuni0291.fits SUN_POSTN: 299.78d {+19h 59m 08s} -20.62d {-20d 37' 00"} SUN_DIST: 94.41 [deg] Sun_angle= 7.2 [hr] (West of Sun) MOON_POSTN: 119.01d {+07h 56m 01s} +25.00d {+25d 00' 10"} MOON_DIST: 88.59 [deg] MOON_ILLUM: 100 [%] GAL_COORDS: 301.98, 34.11 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 202.66,-21.66 [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.
Tmid-T0 | Site |Filt.| Expt. | Limit| Comment _________|_____________________|_____|_______|______|________ 483 | MASTER-Amur | P/ | 90 | 12.4 |The observation and reduction will continue. The message may be cited.
RA (J2000): 12h 47m 48.70s Dec (J2000): -28d 44' 43.4"with an uncertainty of 2.3 arcsec (radius, 90% confidence).
T0+[minutes] MID-UT T-EXP[sec] 5-sigma limits ------------------------------------------------------------------------------------------------ 2.9 2022-01-17 20:08:19 80 g'>16.3, Rc>16.4, Ic>15.8 28.7 2022-01-17 20:34:10 2280 g'>16.5, Rc>17.0, Ic>16.5 ------------------------------------------------------------------------------------------------ T0+ : Elapsed time after the burst T-EXP: Total Exposure timeWe used 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).
Total column: 3.0 (+0.8, -0.7) x 10^21 cm^-2 Galactic foreground: 7.6 x 10^20 cm^-2 Excess significance: 5.2 sigma Photon index: 2.04 (+0.19, -0.18)If the light curve continues to decay with a power-law decay index of 0.79, the count rate at T+24 hours will be 0.024 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 8.8 x 10^-13 (1.3 x 10^-12) erg cm^-2 s^-1.
Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 104 254 147 >19.7 white 104 3930 344 >20.5 v 4141 4341 197 >19.2 b 3525 5048 281 >20.7 u 262 4957 239 >19.8 w1 4552 4752 197 >20.0 m2 4346 4546 197 >20.3 w2 3936 4136 197 >20.4The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.075 in the direction of the burst (Schlegel et al. 1998).
RA(J2000) = 12h 47m 57.3s Dec(J2000) = -28d 45' 42.8"with an uncertainty of 2.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 96%.