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Displaying messages 1 to 20 (next 20)
![]() 12/06/12 18:08:11 GMT
The Swift/UVOT began settled observations of the field of GRB 120612A 148 s after the BAT trigger (Pagani et al., GCN 13357). No new optical afterglow consistent with the XRT posistion (Evans et al., GCN 13359) is detected in the initial UVOT exposures. We note that there is a DSS source, which complicates the UVOT analysis, located at RA, DEC = 126.72113, -17.57439. This source lies 3.05 arcsec...Full Text
![]() 12/06/12 14:18:04 GMT
We have analysed 13 ks of XRT data for GRB 120612A (Pagani et al. GCN 13357), from 144 s to 30.4 ks after the BAT trigger. The data comprise 91 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN. Circ 13359). The light curve can be modelled with an initial power-law decay with an index of alpha=3...Full Text
![]() 12/06/12 02:18:17 GMT
At 02:05:19 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 120612A (trigger=524128). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 126.726, -17.578 which is RA(J2000) = 08h 26m 54s Dec(J2000) = -17d 34' 39" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows...Full Text
![]() 12/03/28 16:02:39 GMT
The Swift/UVOT began settled observations of the field of GRB 120328A 78 s after the BAT trigger (Pagani et al., GCN 13147). No optical afterglow consistent with the enhanced XRT position (Beardmore el al., GCN 13153) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding...Full Text
![]() 12/03/28 03:19:16 GMT
At 03:06:19 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 120328A (trigger=518792). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 241.550, -39.340 which is RA(J2000) = 16h 06m 12s Dec(J2000) = -39d 20' 24" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed...Full Text
![]() 12/03/08 18:30:04 GMT
We have analysed 12 ks of XRT data for GRB 120308A (Baumgartner et al. GCN 13017), from 82 s to 30.0 ks after the BAT trigger. The data comprise 190 s in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN. Circ 13023). The late-time light curve (from...Full Text
![]() 12/02/12 00:11:04 GMT
We have analysed 6.4 ks of XRT data for GRB 120211A (Sonbas et al. GCN 12920), from 133 s to 13.2 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 12922). The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=1.47 (+0.33, -0.22). At T+1267 s ...Full Text
![]() 12/02/11 12:10:51 GMT
At 11:58:28 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 120211A (trigger=514586). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 87.751, -24.759 which is RA(J2000) = 05h 51m 00s Dec(J2000) = -24d 45' 32" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed...Full Text
![]() 11/12/11 02:49:02 GMT
We have analysed 6.8 ks of XRT data for GRB 111210A (Siegel et al. GCN 12650), from 69 s to 30.5 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 12652). The light curve can be modelled with a power-law decay with a decay index of alpha=3.7 (+/-0.4). A spectrum formed from the PC mode data...Full Text
![]() 11/12/09 07:42:40 GMT
At 07:12:08 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 111209A (trigger=509336). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 14.360, -46.788 which is RA(J2000) = 00h 57m 26s Dec(J2000) = -46d 47' 17" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). After the original 320 second...Full Text
![]() 11/11/09 23:04:22 GMT
We have analysed 10 ks of XRT data for GRB 111109A (Pagani et al. GCN 12548), from 3.1 ks to 51.8 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 12550). The light curve can be modelled with a power-law decay with a decay index of alpha=0.5 (+/-0.3). A spectrum formed from the PC mode...Full Text
![]() 11/11/09 20:13:32 GMT
The Swift/UVOT observed the field of GRB 111109A starting 3074 s after the BAT trigger (Pagani et al., 2011, GCN 12548). Settled observations started at 3095 s. The USNO-B1.0 source 0484-0114145 is seen in the UVOT-enhanced XRT error circle (Beardmore et al., 2011, GCN 12550). Our preliminary photometry suggests that this source did not vary during the UVOT observations. We note that the position...Full Text
![]() 11/11/09 03:07:17 GMT
At 02:57:46 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 111109A (trigger=507342). Swift did not slew due an observing constraint. The BAT on-board calculated location is RA, Dec 118.196, -41.599, which is RA(J2000) = 07h 52m 47s Dec(J2000) = -41d 35' 54" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light...Full Text
![]() 11/10/09 08:52:45 GMT
We have analysed 5.1 ks of XRT data for GRB 111008A (Saxton et al. GCN 12423), from 81 s to 24.0 ks after the BAT trigger. The data comprise 223 s in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 12425). The light curve can be modelled...Full Text
![]() 11/10/08 22:22:55 GMT
At 22:12:58 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 111008A (trigger=505054). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 60.454, -32.689, which is RA(J2000) = 04h 01m 49s Dec(J2000) = -32d 41' 18" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows...Full Text
![]() 11/09/24 09:26:59 GMT
At 09:03:20 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 110924A (trigger=503926). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 234.748, -66.308 which is RA(J2000) = 15h 39m 00s Dec(J2000) = -66d 18' 29" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed...Full Text
![]() 11/07/19 15:57:30 GMT
We have analysed 4.5 ks of XRT data for GRB 110719A (Sakamoto et al. GCN 12173), from 117 s to 12.1 ks after the BAT trigger. The data comprise 258 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 12176). The light curve can be modelled with a series of power-law decays. The initial decay...Full Text
![]() 11/07/19 06:22:14 GMT
At 06:09:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 110719A (trigger=457553). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 24.564, +34.572 which is RA(J2000) = 01h 38m 15s Dec(J2000) = +34d 34' 20" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed...Full Text
![]() 11/07/16 00:33:30 GMT
We have analysed 584 s of Photon Counting (PC) XRT data for Swift J1822.3-1606 (Cummings et al. GCN 12159), a probable SGR. The XRT observations started 1.2 days after the BAT trigger. A bright, uncatalogued X-ray source is detected inside the BAT error circle at RA, Dec 275.5763, -16.0742 which is equivalent to:   RA(J2000) = 18h 22m 18.32s   Dec(J2000) = -16d 04' 27...Full Text
![]() 11/06/25 00:32:47 GMT
At 00:06:07 UT, the Swift Burst Alert Telescope (BAT) triggered and located an unknown source (trigger=456014). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 282.551, -0.968 which is RA(J2000) = 18h 50m 12s Dec(J2000) = -00d 58' 04" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed...Full Text Displaying messages 1 to 20 (next 20)
This site was created by Robert Quimby
Database maintained by Robert Quimby, Erin McMahon, and Jeremy Murphy Information displayed on this site is compiled from GCN Circulars and other sources as indicated. |
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