TITLE: GCN CIRCULAR NUMBER: 43721 SUBJECT: GRB 260211A: EP-FXT follow-up observation DATE: 26/02/13 14:06:23 GMT FROM: EP Team at NAOC/CAS <ep_ta@bao.ac.cn> R.D. Liang, M. J. Liu (NAOC), H. Z. Wu (HUST), H. Sun (NAOC) on behalf of the Einstein Probe (EP) team: EP-FXT performed a follow-up observation of the SVOM/ECLAIRs-detected burst GRB 260211A (SVOM/sb26021102, Gotz et al., GCN 43705) at 2026-02-11 21:16:34 (UTC), about 52 minutes after the SVOM/ECLAIRs trigger, with an exposure time of 4569 s. Two uncataloged sources are detected within the ECLAIRs error circle. Preliminary analysis on these sources is automatically conducted, and the details are listed as follows. EPF_J054755.7-002705 RA (J2000): 86.9816 Dec (J2000): -0.4505 Flux: 1.2432 x 10^-12 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 2.2401 x 10^-13 erg/s/cm2 (1 sigma) EPF_J054802.6-002834 RA (J2000): 87.0127 Dec (J2000): -0.4750 Flux: 3.1645 x 10^-13 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 4.0267x 10^-14 erg/s/cm2 (1 sigma) Note that the position of the second candidate is consistent with a known X-ray source 1eRASS J054803.1-002833. 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). View this GCN Circular online at https://gcn.nasa.gov/circulars/43721. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...