{
  "eventId": "GRB 250219A",
  "circularId": 40000,
  "format": "text/plain",
  "submitter": "Daniele B. Malesani at IMAPP / Radboud University <d.malesani@astro.ru.nl>",
  "body": "Daniele B. Malesani (DAWN/NBI and Radboud Univ.), Benjamin Schneider (LAM), Gregory Corcoran (UCD), A. Martin-Carrillo (UCD), and Nikko Pyykkinen (NOT and Turku) report on behalf of a larger collaboration:\n\nWe observed the field of GRB 250219A (Daigne et al., GCN 39376) using the Nordic Optical Telescope (NOT) equipped with the ALFOSC imager. Observations were carried out with the r-band filter and started on 2025 March 26 at 02:18 UT (34.4 days after the GRB), for a total of 50 min on source. Seeing and Moon conditions were favorable.\n\nConsistent with the position of the optical afterglow (Xin et al., GCN 39380; Magnani et al., GCN 39382; Fu et al., GCN 39383), we detect a faint object with AB magnitude r = 25.2 +- 0.3, calibrated against nearby objects from Pan-STARRS.\n\nWhile we note a slight offset (~0.9\") compared to the afterglow position (Fu et al., GCN 39383), we suggest the above object to be a candidate host galaxy of GRB 250219A.\n\nWe thank Liping Xin, Francis Fortin and Susanna Vergani for helpful discussion.\n",
  "bibcode": "2025GCN.40000....1M",
  "submittedHow": "web",
  "createdOn": 1743499698837,
  "subject": "GRB 250219A: NOT candidate host galaxy detection"
}