GCN Circular 14174
Subject
GRB 130131B: VLT/X-shooter acquisition camera limits
Date
2013-02-01T14:16:07Z (11 years ago)
From
Nial Tanvir at U.Leicester <nrt3@star.le.ac.uk>
S. Schulze (PUC, MCSS), Z. Cano (U. Iceland), J. Hjorth, D. Malesani,
J. P. U. Fynbo, D. Xu (DARK/NBI) and N. R. Tanvir (U. Leicester) report
on behalf of a larger collaboration:
We observed GRB 130131B (Siegel et al., GCN Circ. 14159) with ESO/VLT
X-shooter. Our observation began at 5:49 UT on 1 February, i.e. 10.7 hours
post burst. We imaged the field with the acquisition camera in the r' and z' bands
for 3x100 and 4x100 seconds, respectively.
We found no optical counterpart within the revised Swift/XRT X-ray error circle
reported in Goad et al. (GCN Circ. 14165) down to a limiting magnitudes of
approximately 23.2 and 22.7 mag in r' and z' band, respectively. These
measurements are given in the AB system and not corrected for foreground
extinction.
We thank the ESO staff at Paranal, and in particular Maja Vuckovic and
Stephane Brillant for quickly performing the observations.