TITLE:   GCN GRB OBSERVATION REPORT
NUMBER:  4204
SUBJECT: GRB 051105a, observation from Naini Tal and OSN
DATE:    05/11/06 23:19:18 GMT
FROM:    Martin Jelinek at Inst.Astrophys.Andalucia,Granada  <mates@iaa.es>

Antonio de Ugarte Postigo, Shashi B. Pandey, Martin JelĂ­nek,
Alberto J. Castro-Tirado, Victor Casanova, Javier Gorosabel
and Sergey Guziy (IAA-CSIC, Granada, Spain),
Kuntal Mishra and Atish Kamble (ARIES NainiTal, India)

report:

"We have observed the field of GRB 051105a (Cummings et al.,
GCN 4190, Barbier et al., GCN 4194) with 1.0m Nainital
telescope starting 8 hours after the GRB in the R-band
(4x5min) and with 1.5m OSN starting 12 and 36 hours after the
GRB in R (10x5min) and I (10x5min) bands. 

We inspected the complete BAT errorbox (Barbier et al., GCN
4194) and we do not detect any significantly decaying object.

Particularly we do not detect any variation among the three
sources reported by Klose et al. (GCN 4196) or of the optical
counterpart (Piranomonte et al., GCN 4201) of the radio source
reported by Frail et al. (GCN 4199)¨

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