TITLE: GCN CIRCULAR NUMBER: 38197 SUBJECT: GRB241113A: LCOGT (40-cm) optical counterpart detection DATE: 24/11/13 12:46:49 GMT FROM: Ismael Perez-Fournon at Instituto de Astrofisica de Canarias ipf@iac.es
A. Huertas Ferrer, B. Armas-Chinea, F. Dobrindt, P. Escudero-Coca, G. Fernández-Rodríguez, Á. García Lozano, C. Méndez-Lapido, I. Ortega-Casas, M. Torreiro Martínez, G. Villa (all ULL), S.R. Berlanas (IAC and ULL), and I. Pérez-Fournon (IAC and ULL)
We report on optical follow-up observations of GRB 241113A detected by Swift BAT, XRT, and UVOT (Siegel et al.; GCN circular 38194).
We observed the field of GRB 2411113A with one of the two Las Cumbres Observatory Global telescope network (LCOGT) Planewave Delta Rho 350 telescopes and QHY600 CMOS cameras located at the LCOGT node at Haleakala Observatory (Maui, Hawaii, USA) in the SDSS i' filter, in a single exposure of 600 sec. We detect a faint optical counterpart at a position consistent with the Swift UVOT detection (Siegel et al.; GCN circular 38194) with magnitude of i' = 19.48 +/- 0.35 starting at 2024-11-13 09:02:49 UT (about 1.24 hours after the Swift trigger) calibrated against the PanSTARRS DR2 catalog and without corrections for Galactic extinction.
This optical counterpart has also been detected by MASTER (Francile et al.; GCN 38195).
These results are based on observations made with the Las Cumbres Observatory’s education network telescopes that were upgraded through generous support from the Gordon and Betty Moore Foundation, as part of a course on Astrophysical Techniques of the Master in Astrophysics of the Universidad de La Laguna, Tenerife, Spain (LCOGT observing programme IAC2024B-010, ULL-ASTRO-MASTER).
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