GCN Circular 30852
Subject
GRB 210919A: NOT upper limits
Date
2021-09-19T12:24:18Z (3 years ago)
From
Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>
D. A. Perley (LJMU), Z. P. Zhu (NAOC, HUST), D. Xu, S.Y. Fu (NAOC), D.
B. Malesani (DTU Space), and A. Avramova-Boncheva (NOT) report:
We observed the field of GRB210919A (Tohuvavohu et al. GCN 30846) using
the Nordic Optical Telescope (NOT) equipped with the ALFOSC camera. We
obtained 3x300s frames in the Sloan r-band filter and 5x240s in the
i-band filter. Observations were carried out on 2021-09-19 between
03:29 and 04:08 UT.
No source is detected inside the enhanced XRT error circle (Goad et al.,
GCN 30850), to 3-sigma limits of: r>23.4 mag (at t=3.15 hours
post-trigger) and i>23.9 (at t=3.47 hours post-trigger).
DisclaimerNone