GCN Circular 44658
Subject
GRB 260515A: further Liverpool Telescope observations
Event
Date
2026-05-17T08:10:40Z (16 days ago)
From
A. Bochenek at Liverpool John Moores University <a.m.bochenek@2023.ljmu.ac.uk>
Via
Web form
A. Bochenek, D. A. Perley (LJMU), report:
We observed the field of GRB 260515A (Brunetet al., GCN 44622) using the IO:O optical camera on the 2m robotic Liverpool Telescope. We obtained 5x110s exposures in SDSS r and i filters, starting at 2026-05-12 00:42:25 UT, approximately 5.55 hours after trigger.
We detect a source in the stacked images in both filters at the position reported by He et al. (GCN 44623), and observed also by Saccardi et al., GCN 44624; Sosnovskij et al., GCN 44625; He et al., GCN 44626; Wu et al., GCN 44628, Dennefeld et al., GCN 44633; Li et al., GCN 44634, Antier et al., GCN 44643; Dimple et al. GCN 44646; and Moskvitin et al., GCN 44652:
MJD (mid) T_mid-T_0 Filter Mag. (AB)
61176.03308 5.64 h r 21.32 ± 0.06
61176.04059 5.82 h i 21.26 ± 0.07
The photometry was calibrated using nearby PanSTARRS secondary standards and was not corrected for extinction.