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GCN Circular 14742

Subject

GRB 130603B: WHT optical afterglow candidate

Date

2013-06-03T22:53:37Z (11 years ago)

From

Andrew Levan at U.of Leicester <A.J.Levan@warwick.ac.uk>

A.J. Levan (U. Warwick), N.R. Tanvir, K. Wiersema (U. Leicester), O. Hartoog (Amsterdam), K. Kolle, J. Mendez (ING) and T. Kupfer (Nijmegan) report for a larger collaboration:

We observed the location of GRB 130603B (Melandri et al. GCN 14735Not found
 
 
) with the William Herschel Telescope, beginning at 21:39 UT approximately 5.8 hours after the burst. In our z and r-band observations we identify a galaxy present in the SDSS DR9 observations of the field with a magnitude of r=20.94.  In addition we identify a point-like source, offset approximately 1" to the SW of this source, with an approximate (+/- 1") position of;

RA(J2000) 11 28 48.16
DEC(J2000) +17:04:18.0

This source is blended with the SDSS galaxy, but appears to be brighter. We suggest this is likely to be the optical afterglow of GRB 130603B."