GCN Circular 45114
Subject
GRB 260706A: Further EP-FXT follow-up observation
Event
Date
2026-07-08T13:58:49Z (4 days ago)
From
SVOM_group <svomgroup@bao.ac.cn>
Via
Web form
M. Pillas (IAP), F. Daigne (IAP), Y.F. Liang (PMO), report on behalf of the SVOM and EP collaborations:
EP-FXT performed an additional follow-up observation of GRB 260706A detected by SVOM/ECLAIRs (Alaux et al., GCN 45089) and Fermi/GBM (Fermi GBM Team, GCN 45088). This second follow-up observation epoch started on 2026-07-07 at 19:16:49 (UTC), about 27.1 hr after the SVOM trigger, with a total exposure time of 3 ks.
On-ground analysis of the FXT data still detected an uncatalogued source consistent with the previous EP/FXT detection (Liang et al., GCN 45097). The derived average unabsorbed flux is (2.5+/- 0.5) x 10^(-13) erg/s/cm^2 (0.5-10 keV; 1-sigma uncertainty).
Launched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).