GCN Circular 8947
Subject
GRB 090306B: Possible XRT afterglow
Date
2009-03-08T13:58:04Z (15 years ago)
From
Phil Evans at U of Leicester <pae9@star.le.ac.uk>
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Swift-XRT observed the field of the BAT Slew Survey burst GRB 090306B
(Copete et al. GCN Circ. 8944) for 5.8 ks, from T0+67 ks to T0+81 ks. The
data were entirely in PC mode.
A single, faint source is found in the BATSS error circle, with a position
RA,Dec = 231.2083, -6.9682 which is equivalent to:
RA (J2000) = 15 24 49.99
Dec (J2000) = -06 58 05.6
with an uncertainty of 4.0 arcsec (radius, 90% confidence).
We currently have only 16 counts from this source, at a count rate of 3.5
(+/- 0.9) e-3 counts s-1, and are unable to ascertain whether it is
fading.
Further observations, to verify the nature of this source, are planned.
This circular is an official product of the Swift-XRT team.