GCN Circular 23406
Subject
GRB 181103A: Nanshan-1m optical upper limit
Event
Date
2018-11-04T11:51:29Z (7 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
J.H. Liu (XAO), Z.P. Zhu, D. Xu (NAOC), X. Zhang, F.F. Song, Z.X. Li,
J.Y. Bai, H.B. Niu, J.Z. Liu, A. Esamdin, L. Ma, Y. Zhang (XAO) report:
We observed the field of GRB 181103A (Tohuvavohu et al., GCN 23402)
using the Nanshan-1m telescope located at Nanshan, Xinjiang, China. We
optained 5��300s, 1��400s, 1��600s R-band frames, starting at 23:07:05 UT
on 2018-11-03, i.e, 18.73 hr after the Swift trigger.
No optical source was detected in the stacked image at the XRT position
(Evans et al, GCN 23403), down to a limiting magnitude of R ~ 21.3 mag
at the median time of 19.31hr post-burst, calibrated with the nearby
SDSS field.