TITLE: GCN CIRCULAR NUMBER: 42709 SUBJECT: GRB 251116B: EP-FXT follow-up observation DATE: 25/11/17 03:44:02 GMT FROM: EP Team at NAOC/CAS <ep_ta@bao.ac.cn> D.Y. Li, G. J. Yang, C. L. Guo (NAO, CAS), D. Z. Du (ZJU), R. X. Hu (WHU), Q. J. Huang(PMO, CAS), Y. Liu (NAO, CAS) on behalf of the Einstein Probe (EP) team: EP-FXT performed a follow-up observation of the SVOM/ECLAIRs-detected burst GRB 251116B (SVOM/sb25111604, Pillas et al., GCN #42702) at 2025-11-16 17:13:25 (UTC), about 1.7 hours after the SVOM/ECLAIRs trigger, with an exposure time of 5832s. Six 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_J011551.9-410700 RA (J2000): 18.9664 Dec (J2000): -41.1167 Flux: 5.54 x 10^-14 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 1.68 x 10^-14 erg/s/cm2 (1 sigma) EPF_J011518.5-405816 RA (J2000): 18.8272 Dec (J2000): -40.971 Flux: 1.35 x 10^-13 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 4.97 x 10^-14 erg/s/cm2 (1 sigma) EPF_J011442.3-410511 RA (J2000): 18.6761 Dec (J2000): -41.0863 Flux: 4.54 x 10^-14 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 1.58 x 10^-14 erg/s/cm2 (1 sigma) EPF_J011604.1-410246 RA (J2000): 19.0172 Dec (J2000): -41.0461 Flux: 6.74 x 10^-14 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 1.73 x 10^-14 erg/s/cm2 (1 sigma) EPF_J011523.3-410250 RA (J2000): 18.8471 Dec (J2000): -41.0471 Flux: 6.72 x 10^-14 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 2.29 x 10^-14 erg/s/cm2 (1 sigma) EPF_J011535.7-410502 RA (J2000): 18.8988 Dec (J2000): -41.0839 Flux: 7.66 x 10^-14 erg/s/cm2 (observed, 0.5-10 keV) Flux_err: 1.59x 10^-14 erg/s/cm2 (1 sigma) View this GCN Circular online at https://gcn.nasa.gov/circulars/42709. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...