{
  "createdOn": 1739401394506,
  "format": "text/plain",
  "subject": "EP trigger 10202399251 (possibly EP250212a): NOT J-band upper limit",
  "submittedHow": "web",
  "submitter": "Daniele B. Malesani at IMAPP / Radboud University <d.malesani@astro.ru.nl>",
  "bibcode": "2025GCN.39306....1M",
  "eventId": "EP250212a",
  "body": "D. B. Malesani (DAWN/NBI and Radboud Univ.), A. Martin-Carrillo (UCD), P. G. Jonker (Radboud), L. Galbany (ICE-CSIC), K. Phan (ICE-CSIC), B. Hauptmann (NOT and DTU Space) report on behalf of a larger collaboration:\n\nWe observed the field of the EP trigger 10202399251, which occurred on 2025 Feb 12 (possibly named EP250212a), using the Nordic Optical Telescope (NOT) equipped with the NOTCam near-infrared imager. Observations were conducted in the J band, for a total of 18x60 s exposures, with a mid time of 2025 Feb 12.837 UT (12.3 hr after the EP trigger).\n\nWithin the error circle of the EP/FXT X-ray counterpart, we detect no new sources down to a limiting magnitude of J = 20.9 (Vega), calibrated against nearby stars from the 2MASS catalog.\n\n",
  "circularId": 39306
}