GRB 221009A: Faulkes Telescope North continued optical afterglow follow-up
Abstract
We observed the field of Swift GRB 221009A (Dichiara et al. GCN 32632 ) with Faulkes Telescope North, on 2022 October 15 starting at 6:34:12.198 UT (~5.7 days after the trigger) using the MuSCAT3 imager in the r, i, and z bands. Data were calibrated with respect to nearby PanSTARRS sources for r, i, and z bands . We clearly detect the optical counterpart in the r, i and z bands and obtain an upper limit on the g band. The magnitudes are as follows: r = 21.13 +- 0.06 i = 20.01 +- 0.05 z = 19.39 +- 0.05 These values are not corrected for galactic extinction and are consistent with the magnitudes reported in Belkin et al. GCN 32769 observed in a similar time frame.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- October 2022
- Bibcode:
- 2022GCN.32771....1S