GCN Circular 18644
Subject
GRB 151127A: LCOGT-SSO optical upper limits
Date
2015-11-27T12:51:46Z (8 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
D. Xu (NAOC/CAS), D. Malesani (DARK/NBI), Y. Qin (Geneva Observatory),
Y.-H. Han (NAOC/CAS, HUST), and Y.-D. Hu (IAA-CSIC) report:
We observed the field of the short GRB 151127A (D'Ai et al., GCN 18643)
with the 1-m LCOGT telescope at the Siding Spring Observatory.
Observations started 27.42 UT on 2015-11-27 (i.e., 1.04 hr after the
GRB), and we obtained 5x180s R-band and 8x180s I-band images.
No new source is detected inside or close to the XRT position (D'Ai et
al., GCN 18643), down to 3-sigma upper limits of R > 20 mag and I > 19
mag (calibrated against nearby USNO stars), at mean times of 1.17 and
1.52 hr after the GRB, respectively.