GCN Circular 5870
Subject
GRB061121: optical observations
Event
Date
2006-11-27T11:33:09Z (19 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
Yu. Efimov, V. Rumyantsev (CrAO), A. Pozanenko (IKI) on behalf of larger GRB
follow up collaboration report:
We observed an afterglow GRB061121 (Page et al., GCN 5823; Yost et al., GCN
5824) with Shajn 2.6m telescope of CrAO on Nov. 24. A photometry of the
afterglow in a combined image is following:
Mid time Exposure, R_mag, Lim_mag (3 sigma)
(UT) s
Nov. 24.0823 41x120 21.96 +/- 0.07 23.6
The photometry is based on the same calibration as in our previous GCN
5850. A power-law decay index between Nov. 23.1040 observation (Efimov et
al., GCN 5850) and Nov. 24.0823 (this circular) is 1.06 and compatible with
the index reported in GCN 5847 (Halpern et al.) for early afterglow decay.
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