GCN Circular 8605
Subject
GRB 081203B: Swift-XRT candidate afterglow.
Event
Date
2008-12-03T23:13:37Z (17 years ago)
From
Boris Sbarufatti at INAF-IASF-Pa <sbarufatti@ifc.inaf.it>
B. Sbarufatti, V. La Parola, V. Mangano (INAF-IASF Pa) report on
behalf of the Swift-XRT team:
Swift began observing the field of the Swift BAT Slew Survey (BATSS)
GRB 081203B (Copete et al., GCN Circ. 8600, 8602) 16.7 ks after the
trigger. Using 1419 s of XRT Photon Counting mode data we detect a
single uncatalogued source inside the BAT error circle. Using the XRT
data and 2 UVOT images, we find an astrometrically corrected X-ray
position (using the XRT-UVOT alignment and matching UVOT field
sources to the USNO-B1 catalogue): RA, Dec =
228.7993, 44.4284 which is equivalent to:
RA (J2000): 15 15 11.83
Dec (J2000): +44 25 42.3
with an uncertainty of 1.8 arcsec (radius, 90% confidence). The
source lies 27 arcsec from the BAT centroid and has a count rate of
~5.5e-1 counts/s during this observation.
It is not possible to determine whether this source is fading given
the current statistics. Further observations are ongoing to clarify
the nature of this source.
This circular is an official product of the Swift-XRT team.