{
  "bibcode": "2006GCN..5893....1S",
  "body": "G. Stratta, M. Perri, M.L. Conciatore (ASDC), D. N. Burrows (PSU) and\nT. Sakamoto (NASA/ORAU) report on behalf of the Swift XRT team:\n\nWe have analysed the first five orbits of Swift XRT data on the BAT GRB\n061202 (Sakamoto, et al., GCN Circ. 5886; Sakamoto et al., GCN Circ.\n5887).\nA 7.6ks photon counting mode image provides a refined XRT position:\n\nRA(J2000) = 07h 02m 05.55s\nDec(J2000) = -74d 41m 54.6\"\n\nwith an uncertainty of 3.5\" (90% containment). This is 8.6' away from\nthe centre of the refined BAT position quoted in GCN Circ. 5887 (Sakamoto\net al.), and 4.0\" away from the initial XRT position quoted in\nGCN Circ. 5886 (Sakamoto et al.).\n\nThe early X-ray light curve displays a large flare peaking at a count rate\nof approximately 115 counts/s at T+140s followed by a shallow phase up to\nabout T+13ks. At later times the afterglow curve shows a decline with a\npower-law decay with index alpha=-1.6+/-0.4.\n\nThe X-ray spectrum covering the time period from T+126s to T+310s is well\nfit by an absorbed power-law with a photon index of 1.9+/-0.1 and column\ndensity of (6.0+/-0.5)e21 cm**-2 (errors are at 90% confidence level).\nWe note the Galactic column density in the direction of the source is\n1.16e21 cm**-2. The observed (unabsorbed) 0.3-10 keV flux for this\nspectrum is 1.5e-09 (2.5e-09) erg/cm**2/s.\n\nAssuming the X-ray emission continues to decline at the same rate, we\npredict a 0.3-10 keV XRT count rate of 0.02 count/s at T+24hr, which\ncorresponds to an observed (unabsorbed) 0.3-10 keV flux of\n1.2e-12 (2.0e-12) erg/cm**2/s.\n\nThis circular is an official product of the Swift XRT Team.",
  "circularId": 5893,
  "createdOn": 1165087520000,
  "email": "stratta@asdc.asi.it",
  "subject": "GRB 061202: Swift XRT refined analysis",
  "submitter": "Giulia Stratta at ASDC  <stratta@asdc.asi.it>",
  "eventId": "GRB 061202"
}