GCN Circular 10332
Subject
GRB 100115A: SARA Astrometry
Date
2010-01-17T04:56:47Z (14 years ago)
From
Alexander Kann at TLS Tautenburg <kann@tls-tautenburg.de>
D. Alexander Kann (TLS Tautenburg), Adria C. Updike and Dieter H. Hartmann
(Clemson University) report:
We performed astrometry (against the USNO-B1.0 catalog) on the image of
the field of GRB 100115A (Cummings et al., GCN 10325) taken by the 0.9m
SARA observatory at KPNO, which revealed a possible afterglow candidate
(Updike et al., GCN 10328).
For this object, we derive a position of (conservative error 1"):
RA (J2000): 00:13:28.05
Dec. (J2000): -00:49:32.4
in full agreement with the position given for Object "A" by Jelinek et al.
(GCN 10331), and possibly closer to (or identical with) the brighter
southwest component of Object "A".
Given the lack of photometric information in Jelinek et al. (GCN 10331) we
cannot confirm if the SARA candidate has faded significantly, but note
that, in the SARA image, the afterglow candidate is about as bright as the
star to the southwest at RA (J2000): 00:13:27.20, Dec. (J2000): -00:49:42.4, and it
seems to be much fainter than this source (note the different filters,
though) in the Jelinek finding chart.
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