GCN Circular 9284
Subject
GRB 090429B: VLT upper limits
Date
2009-04-29T08:30:22Z (15 years ago)
From
Paolo D'Avanzo at INAF-OAB <paolo.davanzo@brera.inaf.it>
Paolo D'Avanzo (Univ. Milano-Bicocca & INAF/Brera), Andrew J. Levan
(Univ. Warwick), Daniele Malesani (DARK/NBI), Christina C. Thoene
(INAF/Brera), Johan P. U. Fynbo, Jens Hjorth (DARK/NBI), Nial Tanvir
(Univ. Leicester), report on behalf of a larger collaboration:
We observed the field of GRB 090429B (Ukwatta et al. GCN 9281) with the
ESO-VLT in imaging mode with the FORS2 camera. Observations started
about 1 hr after the burst. In our stacked images, no afterglow is
detected down to the following 3sigma limits:
R > 25.3
z > 23.5
Photometry has been calibrated against USNOB1 catalogue and the SDSS.
We acknowledge support from the Paranal staff, in particular E. Mason
and P. Lynam.