(All information courtesy of the instrument teams.)
Previous IAU Circulars
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Wed 03 Oct 18 05:11:44 UT NOTICE_TYPE: Swift-BAT GRB Position TRIGGER_NUM: 865179, Seg_Num: 0 GRB_RA: 52.569d {+03h 30m 17s} (J2000), 52.753d {+03h 31m 01s} (current), 52.078d {+03h 28m 19s} (1950) GRB_DEC: -34.023d {-34d 01' 23"} (J2000), -33.960d {-33d 57' 35"} (current), -34.193d {-34d 11' 35"} (1950) GRB_ERROR: 3.00 [arcmin radius, statistical only] GRB_INTEN: 10846 [cnts] Image_Peak=313 [image_cnts] TRIGGER_DUR: 4.096 [sec] TRIGGER_INDEX: 298 E_range: 25-100 keV BKG_INTEN: 94852 [cnts] BKG_TIME: 18610.30 SOD {05:10:10.30} UT BKG_DUR: 40 [sec] GRB_DATE: 18394 TJD; 276 DOY; 18/10/03 GRB_TIME: 18663.23 SOD {05:11:03.23} UT GRB_PHI: 48.25 [deg] GRB_THETA: 12.13 [deg] SOLN_STATUS: 0x3 RATE_SIGNIF: 8.24 [sigma] IMAGE_SIGNIF: 7.68 [sigma] MERIT_PARAMS: +1 +0 +0 +2 +2 -2 +0 +0 +56 +0 SUN_POSTN: 189.15d {+12h 36m 35s} -3.94d {-03d 56' 28"} SUN_DIST: 124.11 [deg] Sun_angle= 9.1 [hr] (West of Sun) MOON_POSTN: 112.07d {+07h 28m 16s} +20.82d {+20d 49' 23"} MOON_DIST: 78.64 [deg] MOON_ILLUM: 41 [%] GAL_COORDS: 234.31,-55.35 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 37.12,-50.82 [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 = 42.66,18.99 [deg].
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Wed 03 Oct 18 05:15:03 UT NOTICE_TYPE: Swift-BAT GRB Lightcurve TRIGGER_NUM: 865179, Seg_Num: 0 GRB_RA: 52.569d {+03h 30m 17s} (J2000), 52.753d {+03h 31m 01s} (current), 52.078d {+03h 28m 19s} (1950) GRB_DEC: -34.023d {-34d 01' 23"} (J2000), -33.960d {-33d 57' 35"} (current), -34.193d {-34d 11' 35"} (1950) GRB_DATE: 18394 TJD; 276 DOY; 18/10/03 GRB_TIME: 18663.23 SOD {05:11:03.23} UT TRIGGER_INDEX: 298 GRB_PHI: 48.25 [deg] GRB_THETA: 12.13 [deg] DELTA_TIME: -11.00 [sec] TRIGGER_DUR: 4.096 [sec] SOLN_STATUS: 0x3 RATE_SIGNIF: 8.24 [sigma] IMAGE_SIGNIF: 7.68 [sigma] LC_URL: sw00865179000msb.lc SUN_POSTN: 189.15d {+12h 36m 36s} -3.94d {-03d 56' 31"} SUN_DIST: 124.11 [deg] Sun_angle= 9.1 [hr] (West of Sun) MOON_POSTN: 112.10d {+07h 28m 25s} +20.82d {+20d 49' 16"} MOON_DIST: 78.66 [deg] MOON_ILLUM: 41 [%] GAL_COORDS: 234.31,-55.35 [deg] galactic lon,lat of the burst (or transient) ECL_COORDS: 37.12,-50.82 [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 = 42.66,18.99 [deg].
RA(J2000) = 03h 30m 17s Dec(J2000) = -34d 01' 23"with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 30 sec. The peak count rate was ~600 counts/sec (15-350 keV), at ~0 sec after the trigger.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Wed 03 Oct 18 06:02:44 UT NOTICE_TYPE: Swift-XRT Nack-Position TRIGGER_NUM: 865179, Seg_Num: 0 POINT_RA: 52.523d {+03h 30m 05s} (J2000) POINT_DEC: -34.021d {-34d 01' 15"} (J2000) IMG_START_DATE: 18394 TJD; 276 DOY; 18/10/03 IMG_START_TIME: 21752.62 SOD {06:02:32.62} UT, 3089.4 [sec] since BAT Trigger Time COUNTS: 1 Min_needed= 20 STD_DEV: 0.00 Max_StdDev_for_Good=28.44 [arcsec] PH2_ITER: 0 Max_iter_allowed= 4 ERROR_CODE: 1 COMMENTS: SWIFT-XRT Nack Position. COMMENTS: No source found in the image.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Wed 03 Oct 18 06:05:23 UT NOTICE_TYPE: Swift-UVOT Source List TRIGGER_NUM: 865179, Seg_Num: 0 POINT_RA: 52.523d {+03h 30m 05s} (J2000) POINT_DEC: -34.021d {-34d 01' 15"} (J2000) POINT_ROLL: 124.026d IMG_START_DATE: 18394 TJD; 276 DOY; 18/10/03 IMG_START_TIME: 21757.33 SOD {06:02:37.33} UT, 3094.1 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 1.473 N_STARS: 24 X_OFFSET: 603 [pixels] Y_OFFSET: 299 [pixels] X_MAX: 1562 [pixels] Y_MAX: 1258 [pixels] DET_THRESH: 10 PHOTO_THRESH: 5 SL_URL: sw00865179000msufc3094.fits SUN_POSTN: 189.18d {+12h 36m 43s} -3.96d {-03d 57' 20"} SUN_DIST: 124.15 [deg] Sun_angle= 9.1 [hr] (West of Sun) MOON_POSTN: 112.63d {+07h 30m 32s} +20.79d {+20d 47' 23"} MOON_DIST: 79.03 [deg] MOON_ILLUM: 41 [%] GAL_COORDS: 234.30,-55.38 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 37.07,-50.80 [deg] ecliptic lon,lat of the pointing direction COMMENTS: SWIFT-UVOT Source List.
TITLE: GCN/SWIFT NOTICE NOTICE_DATE: Wed 03 Oct 18 06:05:41 UT NOTICE_TYPE: Swift-UVOT Processed Source List TRIGGER_NUM: 865179, Seg_Num: 0 POINT_RA: 52.523d {+03h 30m 05s} (J2000) POINT_DEC: -34.021d {-34d 01' 15"} (J2000) POINT_ROLL: 124.026d IMG_START_DATE: 18394 TJD; 276 DOY; 18/10/03 IMG_START_TIME: 21757.33 SOD {06:02:37.33} UT, 3094.1 [sec] since BAT Trigger Time FILTER: 10, White BKG_MEAN: 1.473 N_STARS: 24 X_OFFSET: 603 [pixels] Y_OFFSET: 299 [pixels] X_MAX: 1562 [pixels] Y_MAX: 1258 [pixels] DET_THRESH: 10 PHOTO_THRESH: 5 SL_URL: sw00865179000msufc3094.fits SUN_POSTN: 189.18d {+12h 36m 43s} -3.96d {-03d 57' 20"} SUN_DIST: 124.15 [deg] Sun_angle= 9.1 [hr] (West of Sun) MOON_POSTN: 112.64d {+07h 30m 32s} +20.79d {+20d 47' 22"} MOON_DIST: 79.03 [deg] MOON_ILLUM: 40 [%] GAL_COORDS: 234.30,-55.38 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 37.07,-50.80 [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: Wed 03 Oct 18 06:06:45 UT NOTICE_TYPE: Swift-UVOT Image TRIGGER_NUM: 865179, Seg_Num: 0 POINT_RA: 52.523d {+03h 30m 05s} (J2000) POINT_DEC: -34.021d {-34d 01' 15"} (J2000) ROLL: 124.026d IMG_START_DATE: 18394 TJD; 276 DOY; 18/10/03 IMG_START_TIME: 21757.33 SOD {06:02:37.33} UT, 3094.1 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 560239379 X_OFFSET: 922 [pixels] Y_OFFSET: 618 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1082 Y_GRB_POS: 778 BINNING_INDEX: 1 IM_URL: sw00865179000msuni3116.fits SUN_POSTN: 189.18d {+12h 36m 43s} -3.96d {-03d 57' 21"} SUN_DIST: 124.15 [deg] Sun_angle= 9.1 [hr] (West of Sun) MOON_POSTN: 112.65d {+07h 30m 35s} +20.79d {+20d 47' 20"} MOON_DIST: 79.04 [deg] MOON_ILLUM: 40 [%] GAL_COORDS: 234.30,-55.38 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 37.07,-50.80 [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: Wed 03 Oct 18 06:07:00 UT NOTICE_TYPE: Swift-UVOT Processed Image TRIGGER_NUM: 865179, Seg_Num: 0 POINT_RA: 52.523d {+03h 30m 05s} (J2000) POINT_DEC: -34.021d {-34d 01' 15"} (J2000) ROLL: 124.026d IMG_START_DATE: 18394 TJD; 276 DOY; 18/10/03 IMG_START_TIME: 21757.33 SOD {06:02:37.33} UT, 3094.1 [sec] since BAT Trigger Time FILTER: 10, White EXPOSURE_ID: 560239379 X_OFFSET: 922 [pixels] Y_OFFSET: 618 [pixels] WIDTH: 160 [pixels] HEIGHT: 160 [pixels] X_GRB_POS: 1082 Y_GRB_POS: 778 BINNING_INDEX: 1 IM_URL: sw00865179000msuni3116.fits SUN_POSTN: 189.18d {+12h 36m 44s} -3.96d {-03d 57' 21"} SUN_DIST: 124.15 [deg] Sun_angle= 9.1 [hr] (West of Sun) MOON_POSTN: 112.65d {+07h 30m 36s} +20.79d {+20d 47' 19"} MOON_DIST: 79.04 [deg] MOON_ILLUM: 40 [%] GAL_COORDS: 234.30,-55.38 [deg] galactic lon,lat of the pointing direction ECL_COORDS: 37.07,-50.80 [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: Wed 03 Oct 18 06:34:27 UT NOTICE_TYPE: Swift-XRT Position TRIGGER_NUM: 865179, Seg_Num: 0 GRB_RA: 52.5290d {+03h 30m 06.96s} (J2000), 52.7135d {+03h 30m 51.23s} (current), 52.0373d {+03h 28m 08.95s} (1950) GRB_DEC: -33.9644d {-33d 57' 51.8"} (J2000), -33.9010d {-33d 54' 03.6"} (current), -34.1347d {-34d 08' 04.9"} (1950) GRB_ERROR: 4.5 [arcsec radius, statistical plus systematic, 90% containment] GRB_INTEN: 1.00e-10 [erg/cm2/sec] GRB_SIGNIF: 10.00 [sigma] IMG_START_DATE: 18394 TJD; 276 DOY; 18/10/03 IMG_START_TIME: 21760.00 SOD {06:02:40.00} UT, 3096.8 [sec] since BAT Trigger Time TAM[0-3]: 100.00 100.00 100.00 100.00 AMPLIFIER: 1 WAVEFORM: 31 SUN_POSTN: 189.20d {+12h 36m 48s} -3.96d {-03d 57' 48"} SUN_DIST: 124.19 [deg] Sun_angle= 9.1 [hr] (West of Sun) MOON_POSTN: 112.94d {+07h 31m 45s} +20.77d {+20d 46' 15"} MOON_DIST: 79.19 [deg] MOON_ILLUM: 40 [%] GAL_COORDS: 234.20,-55.38 [deg] galactic lon,lat of the burst ECL_COORDS: 37.11,-50.75 [deg] ecliptic lon,lat of the burst COMMENTS: SWIFT-XRT Coordinates. COMMENTS: This Notice was ground-generated -- not flight-generated. COMMENTS: TAM values, flux and significance fields are not valid. COMMENTS: This position was automatically generated on the ground using COMMENTS: Photon Counting data telemetered via TDRSS (SPER data). COMMENTS: See http://www.swift.ac.uk/sper/docs.php for details. COMMENTS: The probability that this is a serendipitous source in the COMMENTS: SPER window is 10% < P(seren) < 15%.
RA(J2000) = 03h 30m 06.98s Dec(J2000) = -33d 57' 52.0"with an uncertainty of 4.5 arcseconds (radius, 90% containment). This location is 242 arcseconds from the BAT onboard position. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time. As this position is significantly outside the BAT error circle, it is probably unrelated to the trigger.
Tmid-T0 | MASTER observatory |Filt.| Exp.,s| m_lim | Comment _________|_____________________|_____|_______|_______|________ 89 | MASTER-IAC | P- | 10 | 16.29 | 89 | MASTER-IAC | P- | 50 | 17.38 | Coadd 89 | MASTER-IAC | P- | 710 | 19.12 | Coadd 96 | MASTER-OAFA | C | 10 | 16.88 | 96 | MASTER-OAFA | C | 70 | 18.69 | Coadd 96 | MASTER-OAFA | C | 550 | 19.83 | Coadd 131 | MASTER-IAC | P- | 20 | 16.75 | 176 | MASTER-OAFA | C | 20 | 17.54 | 185 | MASTER-IAC | P- | 20 | 16.75 | 242 | MASTER-IAC | P- | 30 | 17.31 | 242 | MASTER-IAC | P- | 120 | 17.94 | Coadd 272 | MASTER-OAFA | C | 40 | 18.17 | 312 | MASTER-IAC | P- | 40 | 17.05 | 393 | MASTER-OAFA | C | 50 | 18.4 | 393 | MASTER-OAFA | C | 210 | 19.3 | Coadd 399 | MASTER-IAC | P- | 50 | 17.53 | 500 | MASTER-IAC | P- | 70 | 17.66 | 500 | MASTER-IAC | P- | 250 | 18.41 | Coadd 531 | MASTER-OAFA | C | 70 | 18.7 | 632 | MASTER-IAC | P- | 80 | 17.66 | 701 | MASTER-OAFA | C | 90 | 18.81 | 774 | MASTER-IAC | P- | 100 | 17.92 | 900 | MASTER-OAFA | C | 120 | 19.05 | 900 | MASTER-OAFA | C | 450 | 19.72 | Coadd 951 | MASTER-IAC | P- | 130 | 17.92 | 1145 | MASTER-OAFA | C | 150 | 19.18 | 1170 | MASTER-IAC | P- | 160 | 17.92 | 1434 | MASTER-OAFA | C | 180 | 19.31 | 1434 | MASTER-OAFA | C | 1800 | 20.16 | Coadd 1436 | MASTER-IAC | P- | 180 | 18.15 | 1436 | MASTER-IAC | P- | 1800 | 19.11 | Coadd 1749 | MASTER-IAC | P- | 180 | 18.16 | 1749 | MASTER-IAC | P- | 540 | 19 | Coadd 1764 | MASTER-OAFA | C | 180 | 19.26 | 1764 | MASTER-OAFA | C | 540 | 19.84 | Coadd 2070 | MASTER-IAC | P- | 180 | 18.16 | 2097 | MASTER-OAFA | C | 180 | 19.27 | 2382 | MASTER-IAC | P- | 180 | 18.16 | 2429 | MASTER-OAFA | C | 180 | 19.3 | 2709 | MASTER-IAC | P- | 180 | 18.14 | 2709 | MASTER-IAC | P- | 540 | 18.97 | Coadd 2760 | MASTER-OAFA | C | 180 | 19.26 | 2760 | MASTER-OAFA | C | 540 | 19.81 | Coadd 3027 | MASTER-IAC | P- | 180 | 18.14 | 3093 | MASTER-OAFA | C | 180 | 19.26 | 3428 | MASTER-OAFA | C | 180 | 19.25 | 3761 | MASTER-OAFA | C | 180 | 19.3 | 3761 | MASTER-OAFA | C | 540 | 19.9 | Coadd 3887 | MASTER-IAC | P- | 180 | 17.93 | 4094 | MASTER-OAFA | C | 180 | 19.27 | 4203 | MASTER-IAC | P- | 180 | 17.89 | 4203 | MASTER-IAC | P- | 540 | 18.43 | Coadd 4428 | MASTER-OAFA | C | 180 | 19.3 | 4515 | MASTER-IAC | P- | 180 | 17.73 | 4758 | MASTER-OAFA | C | 180 | 19.3 | 4758 | MASTER-OAFA | C | 540 | 19.85 | Coadd 4758 | MASTER-OAFA | C | 1800 | 20.26 | Coadd 4835 | MASTER-IAC | P- | 180 | 17.45 | 5093 | MASTER-OAFA | C | 180 | 19.3 | 5151 | MASTER-IAC | P- | 180 | 17.08 | 5151 | MASTER-IAC | P- | 540 | 17.39 | CoaddFilter C is unfiltred band (clear), calibrated by USNO B1 thousands field stars as 0.2B+0.8R.
RA(J2000) = 03:30:06.86 DEC(J2000)= -33:57:54.2with an error radius of about 1".
Filter T_start(s) T_stop(s) Exp(s) Mag b 5040 5240 196 >20.83 uvm2 3452 3652 196 >19.46 u 3862 3902 39 >19.19 v 3427 3447 196 >19.79 uvw1 3658 3857 196 >19.85 uvw2 5451 5597 144 >19.37 white 3091 3240 294 >21.73The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.01 in the direction of the burst (Schlegel et al. 1998).
RA (J2000): 03h 30m 06.89s Dec(J2000): -33d 57' 52.8"with an uncertainty of 6.3 arcsec (radius, 90% confidence). This position is 4.0 arcmin from the Swift/BAT position. The source is fading with alpha >0.8.
RA(J2000) = 03h 29m 55.4s Dec(J2000) = -33d 59' 25.8"with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 96%.
r > 23.40 i > 23.15 Z > 22.01 Y > 21.53 J > 21.19 H > 20.73These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB.