{
  "format": "text/plain",
  "body": "Roberto Ricci (U Rome), Yu-Han Yang (U Rome), Rosa L. Becerra (U Rome) and Eleonora Troja (U Rome) report on behalf of the ERC BHianca team:\n\nWe observed the field of GRB 250601A (Fermi GBM team GCN 40596; DeLaunay et al., GCN 40600) with the FORS2 imager on the ESO VLT UT1 (Antu). Observations began 29.8 hours after the trigger and were carried out in the R filter with an average airmass of ~2.3. \n\nOur field covers the candidates reported by Swift/XRT (Page et al. GCN 40604, Salvaggio et al., GCN 40606) and EP/FXT  (Liu et al., GCN 40607). Compared with the Legacy Survey DR10 (Dey et al. 2019) catalogue, we do not detect any uncatalogued source down to R>24 AB (3-sigma).\n\nFurther observations are planned.\n\nWe thank the staff at the VLT for the rapid execution of these observations. \n",
  "circularId": 40622,
  "eventId": "GRB 250601A",
  "subject": "GRB 250601A: VLT/FORS2 Optical Observation",
  "submittedHow": "web",
  "bibcode": "2025GCN.40622....1R",
  "createdOn": 1748979094706,
  "submitter": "Roberto Ricci at INAF-IRA <ricci@ira.inaf.it>"
}