GCN Circular 46216

Subject

GRB 261110A : SVOM/GWAC-F60 optical upper limit

Event

GRB 261110A

Date

2026-11-10T15:44:40Z (a day ago)

Edited On

2026-11-10T16:04:05Z (a day ago)

From

SVOM_group <svomgroup@bao.ac.cn>

Edited By

K.L. Page at U Leicester <klp5@leicester.ac.uk> on behalf of SVOM_group <svomgroup@bao.ac.cn>

Via

Web form

Y.X. Guan, S.J. Yin (GXU), L.P. Xin, C. Wu, X.H. Han, P.P. Zhang, J.L. Wang (NAOC), Y.Y. Shi, J.X. Cao(GXU), W.J. Tan(PKU), X.G. Wang, E.W. Liang(GXU) report on behalf of the SVOM follow-up team:
 
We observed the field of GRB261110A detected by SVOM/ECLAIRs (Wang et al., GCN 46215Loading...
 
 ), with the GWAC-F60 at Xinglong Observatory, China. F60 started observing at 2026-11-10T11:52:02 UTC, ~ 122 s after trigger. 

After coadding the images of R band, we do not find any uncataloged candidate within the SVOM/ECLAIRs error box (Wang et al., GCN 46215Loading...
 
 ). We measure the following upper limit calibrated against the USNO-B1.0 catalog, and not corrected for Galactic extinction: 
R > 20.15 mag (5-sigma, mid-time 16.03 min after the trigger).


Two 60cm GWAC-F60(A/B) are operated by Guangxi University and NAOC, CAS, at Xinglong Observatory, China. The field of view is 19*19 arcmin.