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GCN Circular 6602

Subject

GRB 070704 : Liverpool Telescope Observations

Date

2007-07-06T12:50:15Z (17 years ago)

From

Andrea Melandri at Liverpool John Moores U <axm@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 6594Not found
 
 
) with the 2-m Liverpool Telescope about 4.2
hours after the trigger time.

At the revised XRT position (Godet & Sakamoto, GCN 6598Not found
 
 
) 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.