GCN Circular 31425
Subject
GRB 220101A: Additional Liverpool telescope photometry
Event
Date
2022-01-09T20:17:08Z (4 years ago)
From
Daniel Perley at Liverpool JMU <d.a.perley@ljmu.ac.uk>
D. A. Perley (LJMU) reports:
We acquired additional multicolor imaging of the optical afterglow of
GRB 220101A (Tohuvavohu et al., GCN 31347) using the IO:O camera of the
2m robotic Liverpool Telescope, on the nights (UT) of 2022-01-02,
2022-01-03, 2022-01-04, 2022-01-05, and 2022-01-07.
Photometry with reference to SDSS secondary standard stars in
the field gives the following magnitudes:
dt(d) filter mag unc
1.5924 r 21.17 0.06
1.5958 i 19.70 0.04
1.5991 z 19.48 0.05
2.7070 z 19.97 0.12
2.7120 i 20.39 0.08
2.7154 r 21.58 0.17
3.6932 z 20.61 0.12
3.6983 r 22.31 0.17
3.7032 i 20.89 0.09
4.5961 z 20.63 0.11
4.6011 i 21.25 0.11
4.6045 r 23.13 0.34
6.7021 i 21.34 0.19
Magnitudes are given in the SDSS system and uncorrected for extinction.
Times are referenced to the BAT trigger time.
DisclaimerNone