TITLE: GCN CIRCULAR NUMBER: 42986 SUBJECT: GRB 251203C: EP-FXT follow-up observation DATE: 25/12/04 14:02:16 GMT FROM: EP Team at NAOC/CAS <ep_ta@bao.ac.cn> H.Z. Wu (HUST), Y. Wu (NJU), H. Y. Ren, Tian-Yu Liu, G. J. Yang, W. D. Zhang (NAO, CAS) on behalf of the Einstein Probe (EP) team: EP-FXT performed a follow-up observation of the SVOM/ECLAIRs-detected burst GRB 251203C (SVOM/sb25120305, Brunet et al., GCN #42976) at 2025-12-03 20:12:47 (UTC), about 52 minutes after the SVOM/ECLAIRs trigger, with an exposure time of 4569 s. Four 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_J032718.1-071802 RA (J2000): 51.8268 Dec (J2000): -7.3024 Flux: 9.24 x 10^-14 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 2.78 x 10^-14 erg/s/cm2 (1 sigma) EPF_J032703.9-072334 RA (J2000): 51.7662 Dec (J2000): -7.3929 Flux: 1.07 x 10^-13 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 3.23 x 10^-14 erg/s/cm2 (1 sigma) EPF_J032718.1-071802 RA (J2000): 51.8255 Dec (J2000): -7.3005 Flux: 5.85 x 10^-14 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 2.12 x 10^-14 erg/s/cm2 (1 sigma) EPF_J032658.4-072128 RA (J2000): 51.7434 Dec (J2000): -7.3577 Flux: 1.12 x 10^-13 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 2.77x 10^-14 erg/s/cm2 (1 sigma) 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/42986. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...