GRB 210919A: NOT upper limits
Abstract
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
- Publication:
-
GRB Coordinates Network
- Pub Date:
- September 2021
- Bibcode:
- 2021GCN.30852....1P