{
  "bibcode": "2004GCN..2548....1T",
  "body": "A.Tiengo, S.Mereghetti, A.De Luca (IASF-Milano) report:\n\nA preliminary analysis of the XMM-Newton TOO observation (Gonzalez-Riestra\nand Rodriguez-Pascual GCN 2533) of the INTEGRAL GRB 040223 (Gotz et al.\nGCN 2525) gives the following results for the X-ray afterglow:\n\nThe average spectrum is well fit by a steep power law with photon index\n2.8+/-0.2, absorption (1.75+/-0.2)x10^22 cm^-2, and observed flux\n2.6x10^-13 erg cm^-2 s^-1 (2-10 keV).\n\nThe source is fading, with a temporal decay well described by a power law\nwith index (1.0+/-0.2).\n\nThe ~40 ksec long XMM-Newton observation started at 18:54 UT of February\n23, 2004.\n\nThis message may be cited.",
  "circularId": 2548,
  "createdOn": 1079544793000,
  "email": "sandro@mi.iasf.cnr.it",
  "subject": "GRB 040223: XMM-Newton results",
  "submitter": "Sandro Mereghetti at IASF/CNR  <sandro@mi.iasf.cnr.it>",
  "eventId": "GRB 040223"
}