(All information courtesy of the instrument teams.)
Previous IAU Circulars
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 01 Jan 24 14:25:44 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.523d {+08d 31' 23"} (J2000) POINT_ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51751.59 SOD {14:22:31.59} UT, 71832.2 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.212 N_STARS: 34 X_OFFSET: 655 [pixels] Y_OFFSET: 543 [pixels] X_MAX: 1614 [pixels] Y_MAX: 1502 [pixels] DET_THRESH: 15 PHOTO_THRESH: 8 SL_URL: sw01205708000msufc158232.fits SUN_POSTN: 281.59d {+18h 46m 21s} -23.01d {-23d 00' 27"} SUN_DIST: 92.55 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.63d {+11h 02m 30s} +9.46d {+09d 27' 36"} MOON_DIST: 149.17 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 01 Jan 24 14:25:57 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.523d {+08d 31' 23"} (J2000) POINT_ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51751.59 SOD {14:22:31.59} UT, 71832.2 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.212 N_STARS: 34 X_OFFSET: 655 [pixels] Y_OFFSET: 543 [pixels] X_MAX: 1614 [pixels] Y_MAX: 1502 [pixels] DET_THRESH: 15 PHOTO_THRESH: 8 SL_URL: sw01205708000msufc158232.fits SUN_POSTN: 281.59d {+18h 46m 21s} -23.01d {-23d 00' 27"} SUN_DIST: 92.55 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.63d {+11h 02m 31s} +9.46d {+09d 27' 33"} MOON_DIST: 149.17 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [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 01 Jan 24 14:27:16 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.523d {+08d 31' 23"} (J2000) ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51751.59 SOD {14:22:31.59} UT, 71832.2 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 725811784 X_OFFSET: 974 [pixels] Y_OFFSET: 862 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1134 Y_GRB_POS: 1022 BINNING_INDEX: 1 IM_URL: sw01205708000msuni158265.fits SUN_POSTN: 281.59d {+18h 46m 21s} -23.01d {-23d 00' 27"} SUN_DIST: 92.55 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.64d {+11h 02m 33s} +9.45d {+09d 27' 16"} MOON_DIST: 149.18 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [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 01 Jan 24 14:27:25 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.523d {+08d 31' 23"} (J2000) ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51751.59 SOD {14:22:31.59} UT, 71832.2 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 725811784 X_OFFSET: 974 [pixels] Y_OFFSET: 862 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1134 Y_GRB_POS: 1022 BINNING_INDEX: 1 IM_URL: sw01205708000msuni158265.fits SUN_POSTN: 281.59d {+18h 46m 22s} -23.01d {-23d 00' 27"} SUN_DIST: 92.55 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.64d {+11h 02m 33s} +9.45d {+09d 27' 14"} MOON_DIST: 149.18 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [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.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 01 Jan 24 14:33:24 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.524d {+08d 31' 28"} (J2000) POINT_ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51909.60 SOD {14:25:09.60} UT, 71990.2 [sec] since BAT Trigger Time FILTER: 7, U BKG_MEAN: 0.884 N_STARS: 54 X_OFFSET: 415 [pixels] Y_OFFSET: 303 [pixels] X_MAX: 1854 [pixels] Y_MAX: 1742 [pixels] DET_THRESH: 8 PHOTO_THRESH: 4 SL_URL: sw01205708000msufc158390.fits SUN_POSTN: 281.59d {+18h 46m 23s} -23.01d {-23d 00' 26"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.68d {+11h 02m 44s} +9.43d {+09d 25' 55"} MOON_DIST: 149.23 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 01 Jan 24 14:33:40 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.524d {+08d 31' 28"} (J2000) POINT_ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51909.60 SOD {14:25:09.60} UT, 71990.2 [sec] since BAT Trigger Time FILTER: 7, U BKG_MEAN: 0.884 N_STARS: 54 X_OFFSET: 415 [pixels] Y_OFFSET: 303 [pixels] X_MAX: 1854 [pixels] Y_MAX: 1742 [pixels] DET_THRESH: 8 PHOTO_THRESH: 4 SL_URL: sw01205708000msufc158390.fits SUN_POSTN: 281.59d {+18h 46m 23s} -23.01d {-23d 00' 26"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.69d {+11h 02m 45s} +9.43d {+09d 25' 51"} MOON_DIST: 149.23 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [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 01 Jan 24 14:34:47 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.524d {+08d 31' 28"} (J2000) ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51909.60 SOD {14:25:09.60} UT, 71990.2 [sec] since BAT Trigger Time FILTER: 7, U EXPOSURE_ID: 725811942 X_OFFSET: 974 [pixels] Y_OFFSET: 862 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1134 Y_GRB_POS: 1022 BINNING_INDEX: 1 IM_URL: sw01205708000msuni158423.fits SUN_POSTN: 281.60d {+18h 46m 23s} -23.01d {-23d 00' 25"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.69d {+11h 02m 47s} +9.43d {+09d 25' 36"} MOON_DIST: 149.24 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [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 01 Jan 24 14:34:56 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.524d {+08d 31' 28"} (J2000) ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 51909.60 SOD {14:25:09.60} UT, 71990.2 [sec] since BAT Trigger Time FILTER: 7, U EXPOSURE_ID: 725811942 X_OFFSET: 974 [pixels] Y_OFFSET: 862 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1134 Y_GRB_POS: 1022 BINNING_INDEX: 1 IM_URL: sw01205708000msuni158423.fits SUN_POSTN: 281.60d {+18h 46m 23s} -23.01d {-23d 00' 25"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.70d {+11h 02m 47s} +9.43d {+09d 25' 34"} MOON_DIST: 149.24 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.87, 3.74 [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: 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 01 Jan 24 14:40:30 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.525d {+08d 31' 29"} (J2000) POINT_ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 52486.62 SOD {14:34:46.62} UT, 72567.3 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.381 N_STARS: 51 X_OFFSET: 415 [pixels] Y_OFFSET: 303 [pixels] X_MAX: 1854 [pixels] Y_MAX: 1742 [pixels] DET_THRESH: 15 PHOTO_THRESH: 8 SL_URL: sw01205708000msufc158967.fits SUN_POSTN: 281.60d {+18h 46m 24s} -23.01d {-23d 00' 24"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.74d {+11h 02m 57s} +9.41d {+09d 24' 21"} MOON_DIST: 149.28 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.88, 3.74 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Mon 01 Jan 24 14:40:38 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.525d {+08d 31' 29"} (J2000) POINT_ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 52486.62 SOD {14:34:46.62} UT, 72567.3 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 3.381 N_STARS: 51 X_OFFSET: 415 [pixels] Y_OFFSET: 303 [pixels] X_MAX: 1854 [pixels] Y_MAX: 1742 [pixels] DET_THRESH: 15 PHOTO_THRESH: 8 SL_URL: sw01205708000msufc158967.fits SUN_POSTN: 281.60d {+18h 46m 24s} -23.01d {-23d 00' 24"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.74d {+11h 02m 57s} +9.41d {+09d 24' 19"} MOON_DIST: 149.29 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.88, 3.74 [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 01 Jan 24 14:42:09 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.525d {+08d 31' 29"} (J2000) ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 52486.62 SOD {14:34:46.62} UT, 72567.3 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 725812519 X_OFFSET: 974 [pixels] Y_OFFSET: 862 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1134 Y_GRB_POS: 1022 BINNING_INDEX: 1 IM_URL: sw01205708000msuni159000.fits SUN_POSTN: 281.60d {+18h 46m 24s} -23.01d {-23d 00' 24"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.75d {+11h 03m 00s} +9.40d {+09d 23' 59"} MOON_DIST: 149.30 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.88, 3.74 [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 01 Jan 24 14:42:17 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 1205708, Seg_Num: 0 POINT_RA: 10.374d {+00h 41m 30s} (J2000) POINT_DEC: +8.525d {+08d 31' 29"} (J2000) ROLL: 247.067d IMG_START_DATE: 20310 TJD; 1 DOY; 24/01/01 IMG_START_TIME: 52486.62 SOD {14:34:46.62} UT, 72567.3 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 725812519 X_OFFSET: 974 [pixels] Y_OFFSET: 862 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1134 Y_GRB_POS: 1022 BINNING_INDEX: 1 IM_URL: sw01205708000msuni159000.fits SUN_POSTN: 281.60d {+18h 46m 24s} -23.01d {-23d 00' 24"} SUN_DIST: 92.54 [deg] Sun_angle= -5.9 [hr] (East of Sun) MOON_POSTN: 165.75d {+11h 03m 00s} +9.40d {+09d 23' 57"} MOON_DIST: 149.30 [deg] MOON_ILLUM: 73 [%] GAL_COORDS: 118.72,-54.27 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 12.88, 3.74 [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.
RA(J2000) = 00h 41m 23.57s Dec(J2000) = +08d 31' 01.4"with an uncertainty of 1.9 arcseconds (radius, 90% containment). This position may be improved as more data are received; the latest position is available at https://www.swift.ac.uk/sper.
RA (J2000): 00h 41m 23.62s Dec (J2000): +08d 30' 57.0"with an uncertainty of 2.2 arcsec (radius, 90% confidence).
Total column: 4.3 (+1.8, -1.5) x 10^21 cm^-2 Galactic foreground: 5.8 x 10^20 cm^-2 Excess significance: 4.1 sigma Photon index: 2.1 (+/-0.3)If the light curve continues to decay with a power-law decay index of 1.06, the count rate at T+24 hours will be 1.4 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 5.6 x 10^-14 (9.3 x 10^-14) erg cm^-2 s^-1.
Filter T_start(s) T_stop(s) Exp(s) Mag white_FC 168 318 147 >20.4 white 168 1053 334 >20.8 v 656 4661 236 >18.7 b 582 773 39 >18.9 u 729 749 19 >18.3 w1 705 5071 236 >19.5 w2 804 824 19 >18.7The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.059 in the direction of the burst (Schlegel et al. 1998).
Date UT start t-T0 Filter Exp. OT Err. UL. (mid, days) (s) S/N 2024-01-01 16:10:24 0.1823 R 19*60 23.7 2.0 23.0The photometry is based on the nearby PS1 stars photometry (Lupton transformations)
RA Dec c R(Lupton) 00:41:22.24 +08:31:56.6 16.277 +/- 0.012 00:41:17.90 +08:31:41.5 18.013 +/- 0.014
RA(J2000) = 00h 41m 09.5s Dec(J2000) = +08d 32' 25.3"with an uncertainty of 3.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 66%.