{
  "body": "Roberto Ricci (U Rome), Muskan Yadav (U Rome), Rosa L. Becerra (U Rome), Yu-Han Yang (U Rome) and Eleonora Troja (U Rome) report:\n\nWe observed the field of the short GRB 250128B discovered by Fermi/GBM (Fermi GMB team, GCN 39057) and\nSwift/BAT (Evans et al. GCN 39058) with the Very Large Array at the centre frequency of 6 GHz (C band)\nwith a bandwidth 4 GHz. The observations started on 2025-01-29 at 12:48 UT and lasted for 47 mins,\nresulting in a mid elapsed time of 20.8 hours after trigger. The primary calibrator was 3C286 and\nthe phase calibrator J1546+0026.\n\nWithin the enhanced Swift/XRT position (Evans et al., GCN 39069) no counterpart is found down\nto a 3-sigma upper limit of 15 microJy. Additional follow-up is planned. \n\nWe thank the VLA staff for promptly observing the target.",
  "subject": "GRB 250128B: VLA radio upper limit",
  "submittedHow": "web",
  "format": "text/plain",
  "createdOn": 1738218937185,
  "submitter": "Eleonora Troja <nora.gsfc@gmail.com>",
  "bibcode": "2025GCN.39093....1R",
  "circularId": 39093,
  "eventId": "GRB 250128B"
}