{
  "bibcode": "2025GCN.39310....1R",
  "body": "R. Ricci (U Rome), E. Troja (U Rome) and B. O'Connor (Carnegie Mellon) on behalf of a larger collaboration:  \n\nWe observed the Fast X-ray Transient EP250207b discovered by Einstein Probe (Zhou et al. GCN 39266) at the FXT position (Zhou et al. 39266) with the Very Large Array at the frequency of 6 GHz with a bandwidth of 4 GHz on Feb 12th 07:29 UT mid-time (i.e. 4.40 days after the EP trigger).\nThe primary calibrator was 3C286 and the phase calibrator J1130-1449. The data were calibrated,\nimaged and analysed in CASA using standard procedures. \n\nThe target source was not detected in the final cleaned image down to 3-sigma flux upper limit of \n21 microJy.  \n\nWe thank the VLA staff for promptly executing the observations.\n",
  "eventId": "EP250207b",
  "subject": "EP250207b: VLA radio upper limits",
  "submitter": "Roberto Ricci at INAF-IRA <ricci@ira.inaf.it>",
  "circularId": 39310,
  "submittedHow": "web",
  "createdOn": 1739460582556,
  "format": "text/plain"
}