GCN Circular 17071
Subject
GRB 141104A: further Swift-XRT observations and afterglow candidate
Date
2014-11-17T17:00:02Z (10 years ago)
From
Valerio D'Elia at ASDC <delia@asdc.asi.it>
V. D'Elia (ASDC), L. Izzo (URoma/ICRA) and D. Malesani (DARK/NBI)
report on behalf of the Swift-XRT team
Swift-XRT has observed again a field in the error box of the IPN GRB
141104A (Hurley et al. GCN 17026). The total exposure time of the new
observation, which started ~ 10 days after the IPN trigger, is 9 ks.
Source #2 reported in D'Elia & Izzo (GCN 17036) is still detected with
a consistent count rate, while source #1 is marginally detected at a
S/N level just below 3. The count rate of the new detection clearly
implies fading between the two epochs. Despite the slow temporal decay
(t^-0.55) and the flux variation of a factor of just two that can not
exclude another origin, source #1 is the best afterglow candidate for
GRB 141104A. Further observations are Sun constrained until February
2015.
Details on the present analysis can be found at:
http://www.swift.ac.uk/xrt_products/TILED_GRB00032/
This is an official product of the Swift-XRT team.