GCN Circular 26191
Subject
GRB 191106A: NOT optical upper limit
Event
Date
2019-11-07T01:08:39Z (7 years ago)
From
Dong Xu at NAOC/CAS <dxu@nao.cas.cn>
Z.P. Zhu, D. Xu (NAOC), J. Viuho (NOT) report on behalf of a larger
collaboration:
We observed the field of GRB 191106A (Marshall et al., GCN 26177) using
the Nordic Optical Telescope (NOT) equipped with the ALFOSC camera.
Observations started at 19:35:51 UT on 2019-11-06 (i.e., 3.35 hr after
the BAT trigger), and 16x200s Sloan z-band frames were obtained.
No optical source is detected in our stacked image at the XRT position
(Page et al., GCN 26190), down to a limiting magnitude of z > 22.0 at a
mean time of 4.0 hr post-burst, calibrated with the nearby SDSS field.