[vsnet-grb-info 5394] GRB 071112B: Swift-XRT preliminary analysis
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Tue Nov 13 09:45:27 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 7072
SUBJECT: GRB 071112B: Swift-XRT preliminary analysis
DATE: 07/11/13 00:45:21 GMT
FROM: Matteo Perri at ISAC/ASDC <perri at asdc.asi.it>
M. Perri, G. Stratta (ASDC), D.N. Burrows (PSU) report on behalf of the
Swift-XRT team:
The Swift-XRT began observing the field of the short hard GRB 071112B
(trigger=296503, Perri et al., GCN Circ. 7058) at 19:25:35 UT, about
62 minutes after the BAT trigger. In the first 2.1 ks of Photon Counting
mode data, no X-ray source is detected within the refined BAT error
circle (Fenimore et al., GCN Circ. 7071)
We estimate a 3-sigma upper limit on the count rate of ~5e-3 cts/s.
Assuming a power-law spectrum with photon index Gamma=2 and a Galactic
column density of 7.9e20 cm-2, this corresponds to an upper limit on the
observed flux of ~2e-13 ergs/cm2/s (0.3-10 keV)
This is an official product of the Swift XRT Team.
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