[vsnet-grb-info 4874] GRB 070704 : Liverpool Telescope Observations
GCN Circulars
gcncirc at capella.gsfc.nasa.gov
Fri Jul 6 21:50:21 JST 2007
TITLE: GCN CIRCULAR
NUMBER: 6602
SUBJECT: GRB 070704 : Liverpool Telescope Observations
DATE: 07/07/06 12:50:15 GMT
FROM: Andrea Melandri at Liverpool John Moores U <axm at astro.livjm.ac.uk>
A. Melandri (Liverpool JMU), E. Rol, N. Tanvir (U. Leicester)
report on behalf of the RoboNet GRB collaborationon:
We observed the field of GRB 070704 (trigger=283791, Sakamoto
et al., GCN 6594) with the 2-m Liverpool Telescope about 4.2
hours after the trigger time.
At the revised XRT position (Godet & Sakamoto, GCN 6598) we do
not detect any new object in stacked images down to:
Filter t_mid (hr from GRB) Tot_Exp (s) Lim
--------------------------------------------------------------
r' 4.26 1800 23.0
i' 5.10 1800 23.3
--------------------------------------------------------------
Magnitudes were calibrated vs R2 and I USNO-B1 magnitude for
few selected stars.
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