GRB 210222B: Liverpool Telescope optical detection
Abstract
A short ugriz imaging sequence of the optical afterglow of GRB 210222A (Gropp et al. 29545) was obtained using IO:O on the robotic Liverpool Telescope between 23:39 and 23:50 UT on 2021-02-22. Photometry relative to PS1 standards in the field gives the following magnitudes: t-t0 (d) magnitude 0.04333 : g = 18.67 +/- 0.04 0.04440 : r = 18.21 +/- 0.03 0.04544 : i = 18.01 +/- 0.03 0.04971 : z = 17.83 +/- 0.06 The g-band photometry lies below an extrapolation of the other bands and the source is not detected in u-band, which may suggest a moderately high redshift. DisclaimerNone
- Publication:
-
GRB Coordinates Network
- Pub Date:
- February 2021
- Bibcode:
- 2021GCN.29549....1P