GRB 210610B: CrAO/ZTSH optical observations and light curve
Abstract
We observed the GRB 210610B (Page et al., GCN 30170) with ZTSH 2.6m telescope of CrAO observatory starting on June 10 (UT) 20:19:24 (Rumyantsev et al., GCNs 30175, 30178). The optical afterglow first reported by UVOT (Page et al., GCN 30170) is clearly detected in each of a single image of 10 exposure in each of BVRI filters on June 10. Based on our observations on June 10 (B, R - filters) and June 11 (Pankov et al., GCN 30213) we report the light curve (LC) of the afterglow which can be found in http://grb.rssi.ru/GRB210610B/GRB210610B_LC.png Initial phase of the LC from 0.02 days and up to 0.07 days can be approximated by a single power law with index of -0.9, and after that we observe plateau phase at least up to 0.18 days after trigger (see figure above).
- Publication:
-
GRB Coordinates Network
- Pub Date:
- June 2021
- Bibcode:
- 2021GCN.30215....1P