GCN Circular 9707
Subject
GRB 090726: Swift-XRT position of probable counterpart
Date
2009-07-27T00:18:24Z (15 years ago)
From
Kim Page at U.of Leicester <kpa@star.le.ac.uk>
K.L. Page (U. Leicester) reports on behalf of the Swift-XRT team:
Following a delay caused by an Earth-limb constraint, the Swift-XRT
started observing GRB 090726 about 49 minutes after the trigger, at
23:36:32 UT. The XRT initially centroided on a cosmic ray; however, using
promptly downlinked data we find an uncatalogued X-ray source with an
enhanced position: RA, Dec = 248.6788, 72.8843 (degrees) which is
equivalent to:
RA (J2000.0) = 16 34 42.90
DEC (J2000.0) = +72 53 03.3
with an uncertainty of 2.2 arcsec (radius, 90% containment). This location
is 156.1 arcseconds from the BAT onboard position, inside the BAT error
circle.
It is not possible to determine whether the source is fading at this time.
This circular is an official product of the Swift-XRT team.