GCN Circular 4973
Subject
GRB060418: Swift XRT Team Refined Analysis
Date
2006-04-18T12:05:19Z (18 years ago)
From
Abe Falcone at PSU/Swift <afalcone@astro.psu.edu>
A. D. Falcone, D. N. Burrows, Jamie Kennea (PSU), report on behalf of
the Swift XRT team:
Following the Malindi gap, we have analyzed the initial Swift XRT data
from GRB 060418 (Falcone et al., GCN4966), with a total exposure of 1.4
ks. The refined XRT position is:
RA(J2000) = 15 45 42.4
Dec(J2000) = -03 38 22.8
We estimate an uncertainty of 4 arcseconds radius (90% containment).
In addition to the afterglow decay, the early light curve has bright
flaring. The largest flare has a peak of about 460 c/s at approximately
128 s after the trigger time. Aside from the flaring, the light curve
is clearly fading, but the rate is difficult to estimate due to the
flaring and the limited data available at this time. A preliminary
estimate of the power law decay index is approximately 0.6 � 0.3.
This Circular is an official product of the Swift XRT Team.