GRB 210824A: Nanshan/NEXT optical upper limit
Abstract
We observed the field of Swift GRB 210824A (Page et al. GCN Circ. 30700) using the NEXT-0.6m telescope located at Nanshan, Xinjiang, China. We obtained 10x200 s frames in the Sloan r-band, starting at 14:54:25 UT on 2021-08-24, i.e., 10.74 hr after the BAT trigger. No optical source is detected in our stacked image at the enhanced Swift/XRT position (Goad et al., GCN 30702), down to a limiting magnitude of r~21.1, calibrated with the nearby PanSTARRS field.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- August 2021
- Bibcode:
- 2021GCN.30705....1L