GCN Circular 4125
Subject
GRB051021: Swift XRT analysis
Date
2005-10-21T21:52:23Z (19 years ago)
From
Judith Racusin at PSU <racusin@astro.psu.edu>
J. Racusin, J. Kennea, D. Morris, D. Fox, D. Burrows (PSU), N. Gehrels
(GSFC) on behalf of the Swift XRT team:
XRT began observing GRB051021 (Yoshida et al., GCN 4116) at 16:28:28 UT,
approximately 3 hours after the HETE trigger. From the first 2 orbits of
data, we detect an uncatlogued fading X-ray source at:
RA(J2000): 01:56:36.4
Dec(J2000): +09:04:06.3
with an estimated uncertainty of 4 arcseconds (90% containment).
This position is 4.3 arcminutes from the HETE position reported by Yoshida
et al.(GCN 4116), and 2.7 arcseconds from the optical afterglow position
reported by Fox et al.(GCN 4120).
At the time of these observations using 4.7 ks of data, the measured flux
was 2.7x10^-12 ergs/cm^2/s. Further observations are necessary to measure
the lightcurve decay slope.