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GCN Circular 33356

Subject
GRB 230217A: Gemini-South Optical Observation
Date
2023-02-20T18:26:01Z (a year ago)
From
Brendan O'Connor at UMD <oconnorb@umd.edu>
B. O'Connor (UMD, GWU) and E. Troja (UTV, ASU), report on behalf of a
larger collaboration:

We carried out optical observations with the 8.1m Gemini-South Telescope
in Cerro Pachon, Chile targeting the location of the short GRB 230217A
(Moss et al. GCN 33339). We observed the position of X-ray Source 3
reported by Capalbi et al. (GCN 33348) at 09:24:47 UT on 2023-02-20,
corresponding to ~2.5 d after the GRB trigger (Moss et al. GCN 33339,
Svinkin et al. GCN 33349, Veres et al. GCN 33353). The target was
observed during twilight for 300 s in i-band.

Within the source localization, we do not find any obvious counterpart
when compared to the PS1 catalog to depth i>22.8 AB mag (not corrected
for Galactic extinction along the line of sight). However, objects
fainter than the PS1 limits are resolved in our observation and will
require image subtraction to establish fading.

Further observations are planned.

We thank the staff of the Gemini Observatory for assistance in rapidly
obtaining these observations.
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