GCN Circular 17053
Subject
GRB141109A : Xinglong TNT optical observation
Date
2014-11-10T13:24:14Z (10 years ago)
From
L.P. Xin at NAOC <xlp@bao.ac.cn>
L. P. Xin, X. F. Wang, J. Y. Wei, Y. L. Qiu, J. S. Deng,
J. Wang, X. H. Han and C. Wu on behalf of EAFON report:
We began to observe GRB 141109A (D'Avanzo et al., GCNC 17037)
with Xinglong 0.8-m TNT telescope at 2014-11-09, 19:45:06(UT),
about 13.95 hour after the burst.
The optical counterpart reported by ( Covino GCN 17039; Xu et al., 17040)
was detected in 24*300 sec R-band coadded image.
The brightness of the optical emission is estimated to be
about R=21.84 mag at the mid-time of 15.07 hours after the burst.
Combined with the reports ( Covino GCN 17039 and Xu et al., 17040 ),
the decay slope of this OT is roughtly about \alpha~1.12,
if we fit the data with a single power law.
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