GCN Circular 4566
Subject
GRB 060121: Liverpool Telescopes optical limits
Date
2006-01-23T11:00:54Z (18 years ago)
From
Carole Mundell at ARI, JMU,Liverpool <cgm@astro.livjm.ac.uk>
A. Monfardini, A. Melandri, C. Guidorzi, C.G. Mundell, A. Gomboc,
I.A. Steele (Liverpool JMU) on behalf of the Liverpool GRB group report:
"On Jan 21.968 UT and Jan 22.035 UT the Liverpool Telescope imaged the
field of GRB060121 (HETE alert 4010, Arimoto et al., GCN 4550;
Prigozhin et al. GCN 4551), beginning at 0.83 and 2.44 hours after the
GRB, respectively. Images were taken with r', i' and z' filters.
The SXC error circle (Prigozhin et al. GCN 4551) was partially covered
(about 50%) during the first hour of observations. In the second hour
it was entirely inside the Liverpool Telescope 4.6 arcmin field of
view, as was the Swift-XRT error circle provided by Mangano et
al. (GCN 4560).
The optical counterpart suggested by Malesani et al. (GCN 4561) and
Levan et al. (GCN 4562) is not detected in our images. Manual
inspection reveals no afterglow candidate down to a magnitude limit of
r'> 22.5, i'> 22.2 and z'> 21.6 at approximately 2.7 hours after the
burst. The limits are determined by comparison with SDSS pre-burst
photometry.
This message can be cited"