GCN Circular 7956
Subject
GRB 080707: possible break in the X-rays
Event
Date
2008-07-09T15:49:07Z (18 years ago)
From
Rhaana Starling at U of Leicester <rlcs1@star.le.ac.uk>
R.L.C. Starling (U. Leicester) and P. Schady (MSSL-UCL) report on behalf
of the Swift XRT team:
We have analysed the Swift XRT X-ray light curve out to T0+162 ks for GRB
080707 (trigger=316204, Schady et al., GCN Circ. 7947). The light curve
can be fit with a multiply broken power law as described in GCN Circ.
7951, and we note a possible further break. A fit including this possible
break places it at (9 +6/-8)e4 s and the current decay rate is then
approximately alpha=2.2.
The Swift XRT light curve can be viewed in the on-line repository (Evans
et al. 2007) at http://www.swift.ac.uk/xrt_curves/00316204/
Swift XRT continues to observe this source to constrain the current decay
and confirm/reject the presence of a late-time break. Ground-based optical
observations are strongly encouraged.
This is an official product of the Swift XRT team.