TITLE: GCN CIRCULAR NUMBER: 43867 SUBJECT: EP/WXT trigger 01709258681 (EP260227a?): LCO candidate afterglow DATE: 26/02/27 23:33:12 GMT FROM: Daniele Bjørn Malesani at Cosmic Dawn Center, Niels Bohr Institute <daniele.malesani@nbi.ku.dk> R. A. J. Eyles-Ferris (Leicester), D. B. Malesani (DAWN/NBI and Radboud), A. Martin-Carrillo (UCD), J. N. D. van Dalen (Radboud), J. Chacón (PUC), report on behalf of a larger collaboration: We observed the field of the EP/WXT trigger 01709258681 (likely EP260227a) using the Sinistro instrument on the 1-m telescope in Sutherland (South Africa), part of the LCO network. Six 300 s observations were secured in the SDSS r band, with mean time 2026 Feb 27.945 UT (2.47 hr after the WXT trigger). Comparison of our images with archival templates from the Legacy Survey reveals a new object at coordinates (J2000): RA = 14:52:19.94 Dec = -11:24:23.9 Photometry yields r = 20.18 +/- 0.04 (AB) calibrated against nearby stars from the Pan-STARRS catalog, and not corrected for Galactic extinction. We suggest this is the optical counterpart of the EP/WXT trigger 01709258681. View this GCN Circular online at https://gcn.nasa.gov/circulars/43867. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...