{
  "createdOn": 1736495132413,
  "body": "R.-Z. Li (YNAO, CAS), X.-L. Chen (YNU), K. Chatterjee (YNU), Y.-L. Hua (PMO) and Y. Liu (NAOC) report on behalf of the Einstein Probe team:\n\nWe performed a follow-up observation of EP250108a using the FXT onboard the EP. The observation began at 2025-01-09T10:42:46 (UTC, about 22.2 hours post-trigger), with an exposure time of about 6 ks. No new uncatalogued X-ray sources were detected within the EP-WXT error circle (GCN 38861). The 5-sigma upper limit flux is about 3 x 10^-14 erg/s/cm^2 in the 0.5–10 keV range.\n\nLaunched on January 9, 2024, EP is a space X-ray observatory to monitor the soft X-ray sky with onboard X-ray follow-up capability (Yuan et al. 2022, Handbook of X-ray and Gamma-ray Astrophysics).",
  "circularId": 38888,
  "submittedHow": "web",
  "bibcode": "2025GCN.38888....1L",
  "submitter": "EP Team at NAOC/CAS <ep_ta@bao.ac.cn>",
  "eventId": "EP250108a",
  "format": "text/plain",
  "subject": "EP250108a: EP-FXT follow-up observation"
}