GCN Circular 10672
Subject
GRB 100424A: WHT z-band observations
Event
Date
2010-04-25T02:12:06Z (16 years ago)
From
Andrew Levan at U.of Leicester <A.J.Levan@warwick.ac.uk>
A.J. Levan, C. Copperwheat, E. Breedt (U. Warwick), D. Malesani
(DARK/NBI) report on behalf of a larger collaboration:
"We observed the localization of GRB 100424A (Hoversten et al. GCN
10667) using the WHT and ACAM. Observations begin at April 25 00:18,
approximately 9 hours after the burst. We obtained 4x200s exposures
in the z-band. No source is visible within the enhanced XRT location
(Evans et al. GCN 10669) to a limiting magnitude of z>23.2, calibrated
against SDSS.
The deep z-band limit, coupled with apparently bright early X-ray
afterglow is suggestive of either a highly extinguished, or high
redshift burst."