GCN Circular 5903
Subject
Optical Afterglow observations of GRB 061126
Date
2006-12-08T21:20:19Z (17 years ago)
From
Kuntal Mishra at ARIES,Nainital,India <kuntal@aries.ernet.in>
Kuntal Misra (ARIES, Nainital) on behalf of a larger Indian GRB
collaboration
We observed the optical afterglow detected by SWIFT-UVOT (Vanden Berk et
al. GCN 5856) of GRB 061126
(swift trigger=240766, Sbarufatti et al. GCN 5854) in VRI bands using
the 1.0-m Sampurnanand Telescope
located at ARIES, Nainital on 26 November 2006. Several exposures in VRI
bands were taken and the
field was calibrated by imaging the Landolt Standard SA 95 region on the
same night. The R band magnitude
of the afterglow is the following:
#Days since burst Magnitude Exposure time
0.41 20.98 � 0.10 300
0.42 21.04 � 0.09 900
0.49 21.34 � 0.10 1800
0.56 21.49 � 0.10 1800
The observations between 0.41 to 0.56 d gives a power law decay index of
~ 1.4 which is different than the
power law index of ~ 1.0 mentioned by Rol et al. (GCN 5876) but
consistent with the power law decay index
of ~ 1.5 mentioned by Pozanenko et al. (GCN 5902).
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