{
  "bibcode": "2025GCN.41215....1R",
  "subject": "GRB 250702B: SMA observations",
  "submittedHow": "web",
  "format": "text/plain",
  "createdOn": 1754087066326,
  "eventId": "GRB 250702B",
  "version": 2,
  "body": "L. Rhodes (McGill), P. Atri (Astron), J.S. Bright (Oxford), F. Carotenuto (INAF, Romę), M. Gurwell (Harvard), G.K. Keating (Harvard) and N. Sarin (Cambridge) report:\n\nWe observed the position of GRB 250702B (GCN #40883, #40886, #40890) with the Submillimeter Array (SMA) at a central frequency 225.5GHz for 4.5hours beginning at 06:51UT on 31 July 2025. Vesta and MWC349A were used as the flux calibrator, while 3C84 was used to calibrate the bandpass response. 1743-038 and 1911-201 were used as interleaved complex gain calibrators.\n\nThe data was processed using the COMPASS pipeline (Keating et al, in prep). We do not detect any emission at the position of GRB 250702B (GCN #40924) with a 3sigma upper limit of 0.84mJy/beam. \n\nWe thank the staff at the SMA for carrying out these observations.\n",
  "editedBy": "Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov> on behalf of Vidushi Sharma at NASA GSFC/UMBC <vidushi.sharma@nasa.gov>",
  "submitter": "lauren.rhodes@mcgill.ca",
  "editedOn": 1754284537894,
  "circularId": 41215
}