{
  "eventId": "EP260514a",
  "createdOn": 1778917155215,
  "format": "text/plain",
  "subject": "EP260514a: TRT optical counterpart candidate",
  "body": "X. Liu, (NAOC), S. Tinyanont, R. Anutarawiramkul, P. Butpan, K. Noysena, K. Chanchaiworawit (NARIT), S.Q. Jiang, J. An, Z.P. Zhu, L.B. He, D. Xu, Z. Fan, W.X. Li, N.C. Sun (NAOC), S.Y. Fu (HUST) report:\n\nWe observed the field of EP260514a dtected by EP/WXT (Cheng et al., GCN 44613; Lipunov et al., GCN 44614; Mohan et al., GCN 44619; Sánchez et al., GCN 44632; Li et al., GCN 44638), using the 0.7-m telescope of the Thai Robotic Telescope network (TRT), located at Fresno, California, U.S.A (SRO). Observation started at 2026-05-15 04:25:07 UT, i.e., 0.48 day post-burst, and 6x300 s R-band frames were obtained. \n\nImage subtraction using Legacy-DR10 reveals an uncatalogued optical source within the EP/WXT (Cheng et al., GCN 44613) error circle at coordinates\nR.A. (J2000) = 14:17:10.41\nDec. (J2000) = +49:22:30.9\n\nwith an uncertainty of ~ 1.5 arcsec. The source had R ~ 21.8 mag with SNR of ~3 at a median time of 11.74 hrs post-trigger, calibrated with Pan-STARRS DR2 converted using Lupton (2005) equations and not corrected for Galactic extinction.\n\nThe magnitude is consistent with those reported by SVOM/VT (Li et al., GCN 44638). No NEO would be at the above position at the observational time by checking MPC.\n\nWe think the source could be the optical cointerpart of EP260514a.",
  "bibcode": "2026GCN.44639....1L",
  "submitter": "liuxing@nao.cas.cn",
  "submittedHow": "web",
  "editedOn": 1779057666476,
  "version": 2,
  "editedBy": "Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of liuxing@nao.cas.cn",
  "circularId": 44639
}