GCN Circular 3934
Subject
GRB 050906: Swift XRT upper limit
Date
2005-09-06T19:59:02Z (19 years ago)
From
David Burrows at PSU/Swift <dxb15@psu.edu>
C. Pagani (PSU/INAF-OAB), V. La Parola(INAF-IASF), D. N. Burrows (PSU)
report on behalf of the Swift XRT team:
The Swift XRT has observed the field of GRB050906 for 6.0 ks. There are 2
faint serendipitous sources in 5.2 ks of data taken in photon-counting
mode. Source #1 is marginally detected (at a flux of roughly 8e-14 erg
cm-2 s-1), while Source #2 is brighter.
The nearest X-ray source to the BAT position is source #1, which is 3.9
arcmin from the on-board BAT position (Krimm et al. 2005, GCN 3926) and 6.3
arcmin from the refined BAT position (Krimm et al., private
communication). No X-ray sources are found in the BAT error circle down to
a 90% confidence upper limit of ~8e-14 erg cm-2 s-1.
No X-ray emission is detected from the position of the galaxy IC328
reported by Levan et al. 2005 (GCN 3927). The nearest X-ray source to the
galaxy position is also Source #1, which is 4.6 arcmin away.
No X-ray emission is detected from the position of the radio source
reported by Cameron and Frail 2005 (GCN 3933). Source #1 is also closest
to the reported radio source, at a distance of 3.7 arcmin.
No further observations are planned with the XRT.
This message can be cited.