{
  "body": "V. D'Elia (SSDC & INAF-OAR), A. Tohuvavohu (U. Toronto), D.N. Burrows\n(PSU), J. D. Gropp (PSU), J.P. Osborne (U. Leicester), K.L. Page (U.\nLeicester), A.P. Beardmore (U. Leicester), B. Sbarufatti (INAF-OAB), C.\nSalvaggio (INAF-OAB) and P.A. Evans (U. Leicester) reports on behalf of\nthe Swift-XRT team:\n\nSwift-XRT has performed follow-up observations of the IPN-detected\nburst GRB 240715A, collecting 4.7 ks of Photon Counting (PC) mode data\nbetween T0+36.0 ks and T0+54.3 ks. \n\nThree uncatalogued X-ray sources have been detected, however none of\nthem is above the RASS limit or shows definitive signs of fading.\nTherefore, at the present time we cannot identify which, if any, is the\nafterglow. Details of these sources are given below:\n\nSource 1:\n  RA (J2000.0):  5.2342  =  00:20:56.20\n  Dec (J2000.0): -36.5445  =  -36:32:40.1\n  Error: 6.7 arcsec (radius, 90% conf.)\n  Count-rate: (1.40 [+0.84, -0.62])e-3 ct s^-1\t \n  Distance: 135 arcsec from IPN position.\n\nSource 2:\n  RA (J2000.0):  5.3550  =  00:21:25.20\n  Dec (J2000.0): -36.6383  =  -36:38:17.9\n  Error: 7.8 arcsec (radius, 90% conf.)\n  Count-rate: (1.83 [+1.05, -0.78])e-3 ct s^-1\t \n  Distance: 487 arcsec from IPN position.\n  Flux: (3.3 [+1.9, -1.4])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)\n\nSource 3:\n  RA (J2000.0):  5.1463  =  00:20:35.12\n  Dec (J2000.0): -36.3896  =  -36:23:22.4\n  Error: 5.5 arcsec (radius, 90% conf. [Enhanced position])\n  Count-rate: (4.0 [+1.4, -1.2])e-3 ct s^-1   \n  Distance: 595 arcsec from IPN position.\n  Flux: (6.7 [+2.3, -1.9])e-14 erg cm^-2 s^-1 (observed, 0.3-10 keV)\n\nFurther analysis is ongoing. \n\nThe results of the XRT-team automatic analysis of the XRT observations,\nincluding a position-specific upper limit calculator, are available at\nhttps://www.swift.ac.uk/ToO_GRBs/00021699.\n\nThis circular is an official product of the Swift-XRT team.\n\n",
  "circularId": 36890,
  "eventId": "GRB 240715A",
  "subject": "GRB 240715A: Swift-XRT observations",
  "submitter": "Phil Evans at U of Leicester <pae9@star.le.ac.uk>",
  "bibcode": "2024GCN.36890....1D",
  "createdOn": 1721142905045,
  "submittedHow": "email"
}