GCN Circular 46274
Subject
GRB 261113A: SVOM/GWAC bright optical counterpart
Event
Date
2026-11-14T14:53:35Z (a day ago)
Edited On
2026-11-14T20:08:12Z (20 hours ago)
From
Liping Xin at NAOC, SVOM <xlp@nao.cas.cn>
Edited By
K.L. Page at U Leicester <klp5@leicester.ac.uk> on behalf of Huali Li at at NAOC, SVOM <lhl@nao.cas.cn>
Via
Web form
J. Y. Wei, L. P. Xin, Y. Xu, J. R. Xu, X. H. Han, H. L. Li, J. Wang, L. Huang, Y. L. Qiu, L.J. Wang, H. B. Cai, C. Wu, L. J. Chen, Y. T. Zheng, W. L. Dong, P. P. Zhang, Y. J. Xiao , Y. N. Ma , S., Jin, Z. R. Cui, W. J. Xie, J. S. Deng (NAOC), Z. G. Dai (USTC), X. Y. Wang (NJU), E. W. Liang (GXU), X. G. Wang (GXU) report on behalf of SVOM/GWAC team.
The field of GRB 261113A triggered by SVOM/Eclairs (sb26111302, Saccardi et al., GCN 46244, Dagoneau et al., GCN 46270) was monitored by GWAC system continuously during about 4 hrs before and 12 minutes post trigger. The exposure time for each frame is 3 sec.
The optical counterpart (Lin et al., GCN 46247; Lei et al., GCN 46248; Li et al., GCN 46249; Yin et al., GCN 46250; Chen et al., GCN 46251; Wu et al., GCN 46252; Zhao et al., GCN 46253; Li et al., GCN 46254; Saikia et al., GCN 46256; Adami et al., GCN 46257; Gress et al., GCN 46258; Izzo et al., GCN 46259; Brivio et al., GCN 46260; Maksut et al., GCN 46262; Moskvitin et al., GCN 46263; Perez-Garcia et al., 46264; Dimple et al., GCN 46266; Jelinek et al., GCN 46271) was clearly detected in single frames with a peak brightness of W~11 mag at around 10 seconds after the burst. The magnitude is calibrated to the GAIA G-band and not corrected for Galactic extinction.