GCN Circular 46251
Subject
GRB 261113A: Xinglong 2.16m optical afterglow detection
Event
Date
2026-11-13T17:06:29Z (2 days ago)
From
SVOM_group <svomgroup@bao.ac.cn>
Via
Web form
L. J. Chen, C. Wu, L. P. Xin, H.L. Li, Y. N. Ma, Y. L. Qiu, J. Wang, X. H. Han, P. P. Zhang, J. Zheng, J. J. Jia, Z. Fan, J. Y. Wei (NAOC), Q. Zhao report on behalf of SVOM follow-up team:
We observed the field of GRB 261113A triggered by SVOM/ECLAIRs (sb26111302, Saccardi et al., GCN 46244) using the 2.16m telescope located at Xinglong observatory, China, equipped with the BFOSC camera. We obtained 6*60s frames in R-band, starting at 15:07:13 UT on 2026-11-13, about 36 min after the trigger.
The optical counterpart (Lin et al., GCN 46247; Lei et al., GCN 46248; Li et al., GCN 46249; Yin et al., GCN 46250) was well detected in our R-band image.
We measure a magnitude of R ~ 18.9 for the optical afterglow.
We thank the staff at Xinglong observatory for their excellent support.