{
  "format": "text/plain",
  "submittedHow": "email",
  "editedOn": 1743171108258,
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Alexei Pozanenko at IKI, Moscow <grb.alex@gmail.com>",
  "createdOn": 1743169248330,
  "version": 2,
  "subject": "EP250302a: SPI-ACS/INTEGRAL Upper Limit",
  "circularId": 39907,
  "submitter": "Alexei Pozanenko at IKI, Moscow <grb.alex@gmail.com>",
  "bibcode": "2025GCN.39907....1M",
  "body": "P. Minaev (IKI), A. Pozanenko (IKI), S. Grebenev (IKI), I. Chelovekov (IKI)\nand IKI GRB-FuN\n\nWe searched the INTEGRAL dataset for gamma-ray emission from the X-ray\ntransient EP250302a, detected with WXT EP (Dai et al., GCN 39556). No\nsignificant excess above the background was detected during the EP250302a\nin any of the detectors. The source EP250302a is located 71 degrees\noff-axis of the INTEGRAL telescopes' field of view. In particular, for the\nSPI-ACS detector, the upper limit (3-sigma) for the fluence from an event\nwith a duration of 100 sec (during the first and second EP250302a episodes)\nis 3.2e-6 erg*cm^-2 using the softest simulated CPL spectrum with Ep = 20\nkeV. The SPI-ACS estimating is based on the calibration given in the paper\nhttps://ui.adsabs.harvard.edu/abs/2023MNRAS.525.2411M\n\nWe thank the INTEGRAL Observatory and all the staff who have served it for\nover 22 years. Blessed be the memory of its deeds.\n",
  "eventId": "EP250302a"
}