GCN Circular 3333
Subject
GRB 050502b: Swift XRT Position
Event
Date
2005-05-02T12:53:52Z (21 years ago)
From
David Burrows at PSU/Swift <dxb15@psu.edu>
C. Pagani, A. Falcone, D. N. Burrows, J. Kennea, S. Kobayashi (PSU), F.
Marshall, and Neil Gehrels (GSFC) report on behalf of the Swift XRT team:
The Swift XRT observed GRB 050502b (Falcone et al., GCN 3330) beginning at
09:26:43 UT. As reported in GCN 3330, the XRT obtained only 5 photons in
its initial centroiding image and was not able to report a prompt
centroid. Analysis of the first orbit of data reveals a bright, transient,
uncataloged X-ray source at the following position:
RA(J2000) = 09:30:10.1
Dec(J2000) = +16:59:44.3
The estimated uncertainty is 5 arcseconds radius (90% containment). We
note that this position is 23.1 arcseconds from the BAT position reported
in GCN 3330, and 141 arcseconds from the UVOT position reported in GCN 3330.