Status Report

GRB 060116: Swift-BAT detection of a burst

By SpaceRef Editor
January 17, 2006
Filed under , ,
GRB 060116: Swift-BAT detection of a burst

NUMBER: 4519
SUBJECT: GRB 060116: Swift-BAT detection of a burst
DATE: 06/01/16 09:06:54 GMT
FROM: Scott Barthelmy at NASA/GSFC

S. Campana (INAF-OAB), S. Barthelmy (GSFC), N. Gehrels (GSFC), C. Gronwall (PSU), J. Kennea (PSU), C. Markwardt (GSFC/UMD), K. Page (U Leicester), D. Palmer (LANL), M. Perri (ASDC) on behalf of the Swift team:

At 08:37:27 UT, Swift-BAT triggered and located GRB 060116 (trigger=177533). The spacecraft slewed immediately. The BAT on-board calculated location is RA,Dec 84.699d,-5.449d {05h 38m 48s,-05d 26′ 54″} (J2000), with an uncertainty of 3 arcmin (radius, 90% containment, stat+sys). The BAT light curve shows a multi-peak structure with a total duration of ~35 sec. The peak count rate was ~600 counts/sec (15-350 keV), at several times after the trigger.

XRT began observing the field at 08:40:00.75 UT, 154 sec after the BAT trigger. The on-board detection algorithm did not centroid on a source due to insufficient counts so no prompt X-ray position is available. The XRT prompt spectrum and lightcurve show no signficant X-ray emission in the field, suggesting that any X-ray counterpart to this burst is faint. Further analysis will require processing of the XRT full telemetry data following the next ground station contact at 09:32 UT.

UVOT took a finding chart exposure of 200 seconds with the V filter starting 153 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7’x2.7′ sub-image covers 25% of the BAT 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 BAT error circle. The list of sources is typically complete to about 18.0 mag. No correction has been made for the expected visual extinction of about 0.9 magnitudes.

SpaceRef staff editor.