GCN Circular 38633
Subject
EP241217a: optical upper limit with the Liverpool Telescope
Date
2024-12-19T13:13:23Z (14 days ago)
From
Amit Kundu at Royal Holloway - UoL/ U of Warwick, UK <amitkundu515@gmail.com>
Via
Web form
A. Kumar, J. R. Maund (RHUL), N. C. Sun (UCAS), W. X. Li, Y. N. Wang (NAOC), and K. Wiersema (Herts) report:
We observed the field of Einstein Probe and Swift-XRT detected transient EP241217a (Zhou et al., GCN 38586; Williams et al., GCN 38596) with the IO:O Imager at the 2m Liverpool telescope. We observed 200s x 3 frames in the r-band starting at 2024-12-19 UT 02:14:33.2 (~1.86 days post-trigger).
Preliminary photometry on the stacked image was performed and calibrated against the SDSS catalogue stars.
We do not detect any source at the location of the optical counterpart candidate of EP241217a (Levan et al., GCN 38587; Izzo & Malesani, GCN 38588; Fan et al. GCN 38592; Mohan et al., GCN 38612; Zhu et al., GCN 38613; Bochenek & Perle, GCN 38615; Brivio et al., GCN 38618) down to a limiting magnitude of > 22.
This circular may be cited.