GRB 060210: Swift detection of a burst
TITLE: GCN GRB OBSERVATION REPORT
NUMBER: 4724
SUBJECT: GRB 060210: Swift detection of a burst
DATE: 06/02/10 05:27:56 GMT
FROM: Scott Barthelmy at NASA/GSFC Scott@lheamail.gsfc.nasa.gov
A. Beardmore (U Leicester), S. Barthelmy (GSFC), P. Boyd (GSFC), D. Burrows (PSU), N. Gehrels (GSFC), C. Markwardt (GSFC/UMD), F. Marshall (GSFC), J. Osborne (U Leicester), D. Palmer (LANL), P. Schady (PSU/UCL-MSSL) on behalf of the Swift team:
At 04:58:50 UT, Swift-BAT triggered and located GRB 060210 (trigger=180977). The spacecraft slewed immediately. The BAT on-board calculated location is RA,Dec 57.730d,+27.026d {03h 50m 55s,+27d 01′ 33″} (J2000), with an uncertainty of 3 arcmin (radius, 90% containment, stat+sys). The BAT light curve shows a two-peak structure with a total duration of ~5 sec. The peak count rate was ~4500 counts/sec (15-350 keV), at ~1 seconds after the trigger.
The XRT began observing the field at 05:00:25 UT, 95 seconds after the BAT trigger. XRT found a variable, uncatalogued X-ray source located at RA(J2000) = +03h 50m 57.2s, Dec(J2000) = +27d 01′ 38.2″, with an estimated uncertainty of 5.4 arcseconds (90% confidence radius). This location is 27 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.50s image was 4.6e-09 erg/cm2/s (0.2-10 keV).
UVOT took a finding chart exposure of 200 seconds with the V filter starting 99 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7’x2.7′ sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 18th mag. The 8’x8′ region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18.0 mag. No correction has been made for the expected extinction of about 0.3 magnitudes.
