Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to
Introducing Einstein Probe, Astro Flavored Markdown, and Notices Schema v4.0.0. See news and announcements

GCN Circular 5447

GRB 060814: Swift detection of a bright burst
2006-08-14T23:21:14Z (18 years ago)
Scott Barthelmy at NASA/GSFC <>
A. Moretti (INAF-OAB), S. D. Barthelmy (GSFC),
J. R. Cummings (NASA/UMD), C. Guidorzi (Univ Bicocca&INAF-OAB),
K. M. McLean (LANL/UTD), D. M. Palmer (LANL), P. Romano (INAF-OAB),
M. Stamatikos (NASA/ORAU) and D. E. Vanden Berk (PSU) report on
behalf of the Swift Team:

At 23:02:19 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 060814 (trigger=224552).  Swift slewed immediately to the burst. 
The BAT on-board calculated location is 
RA,Dec 221.348, +20.583 {14h 45m 23s, +20d 34' 58"} (J2000)
with an uncertainty of 3 arcmin (radius, 90% containment, including 
systematic uncertainty).  The BAT light curve shows at least 3 large peaks. 
The first peak starts at T-10 sec, peaks at T+16 sec with 12,000 cnts/sec. 
The second peaks at T+70 sec at 6000 cnts/sec.  The third peaks at T+120 sec
at ~1000 cnts/sec. 

The XRT began observing the field at 23:03:30 UT, 72 seconds after the
BAT trigger. XRT found a bright variable X-ray source
located at RA(J2000) = 14h 45m 21.2s, Dec(J2000) = +20d 35' 02.7", with an
estimated uncertainty of 5.0 arcseconds (90% confidence radius). 
This location is 32 arcseconds from the BAT on-board position, within
the BAT error circle. The initial flux in the 0.1s image was
5.7e-08 erg/cm2/s (0.2-10 keV). 

UVOT took a finding chart exposure of 100 seconds with the White
(160-650 nm) filter starting 80 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 18.5 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 mag. No
correction has been made for the expected extinction corresponding to
E(B-V) of  0.04.
Looking for U.S. government information and services? Visit