{
  "bibcode": "2008GCN..8282....1S",
  "body": "B. Sbarufatti, V. La Parola, V. Mangano (INAF-IASFPa), on behalf of the Swift-XRT team\n\n  At 2008-09-22 14:54UT Swift performed a TOO observation of the INTEGRAL\nburst GRB 080922 (Mereghetti et al., GCN Circ. 8281), 3h52m after the\nINTEGRAL trigger.\n\n   No X-ray source was found in or near the IBAS error circle in a 5.9ks\nexposure Swift/XRT Photon Counting mode image down to a 3 sigma limiting 0.3-10keV count\nrate of 4.3e-3 count/s. Assuming a power-law spectrum of photon index 2\nabsorbed by the Galactic column density of 1.14e22 cm-2 in the direction\nof the burst, this corresponds to an observed 0.3-10keV flux limit of\n2.55e-13 erg cm-2 s-1.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 8282,
  "createdOn": 1222154166000,
  "email": "laparola@ifc.inaf.it",
  "subject": "GRB080922: Swift-XRT upper limit",
  "submitter": "Valentina La Parola at INAF-IASPA  <laparola@ifc.inaf.it>",
  "eventId": "GRB 080922"
}