GCN Circular 37490
Subject
GRB 240911A: LCO optical observations
Date
2024-09-13T16:23:30Z (20 days ago)
From
luca.izzo@inaf.it
Via
Web form
L. Izzo (INAF-OACn and DARK/NBI) and D. B. Malesani (DAWN/NBI and Radboud Univ.) report:
We observed the field of GRB 240911A (Schanne et al., GCN #37462) with the Sinistro instrument mounted on the 1-m telescope of the LCO network, located in Sutherland, South Africa. Observations started on 2024 September 11 at 22:30 UT (1.87 hr after the GRB trigger). We obtained a series of 3x180 s images in the SDSS-r filter, and of 5x120 s in the PS1-z filter.
We did not detect any source consistent with the position of either of the two X-ray sources reported by Swift-XRT (Williams et al., GCN #37483) up to a limit of r = 21.0 mag and z = 19.5 mag.
This project has received funding from the European Union's Horizon 2020 research and innovation program under grant agreement No 101004719.