{
  "bibcode": "2006GCN..4733....1B",
  "body": "A.P. Beardmore, S. Mateos, K.L. Page (UL), D.N. Burrows (PSU) report on\nbehalf of the Swift XRT Team.\n\nWe have analysed the Swift XRT data from the first 3 orbits of GRB\n060210 (Beardmore et al, GCN 4724). The refined XRT position from 2.5 ks\nof photon counting mode data is\n\nRA(J2000)  =   3h 50m 57.4s\nDec(J2000) = +27d 01' 36.4\"\n\nwith an estimated uncertainty of 3.6 arcsec (90% containment).\nThis position is 29.5 arcseconds from the BAT position given in GCN 4724\nand 2.0 arcseconds from the optical afterglow position reported in GCN\n4726 (Mundell et al).\n\nThe fading X-ray light curve shows 2 strong flares 200 s and 385 s\nafter the BAT trigger. Fitting a power law to the data\nafter the flares gives a late time decay slope of 0.7.\n\nThe X-ray spectrum from the first orbit (T+103s to T+600s) is well fit\nby an absorbed power law, with a photon index of 1.93+/-0.03 and a\ncolumn density of 1.64+/-0.3 e22 cm**-2 in the rest frame of the burst\n(assuming z = 3.91; Cucchiara et al, GCN 4729), in addition to the\nGalactic value of 8.5e20 cm**-2. The observed 0.2-10 keV flux is\n9.4e-10 ergs cm**-2 s**-1, which corresponds to an unabsorbed flux of\n1.3e-09 ergs cm**-2 s**-1.\n\nAssuming the X-ray emission from the GRB continues to decay at the\nsame rate, the predicted count rate 24 hrs after the burst trigger is\n0.1 count/s, which corresponds to an observed (unabsorbed) 0.2-10 keV\nflux of 3.4e-12 (4.8e-12) ergs cm**-2 s**-1.\n\nThis circular is an official product of the Swift XRT Team.",
  "circularId": 4733,
  "createdOn": 1139578613000,
  "email": "apb@star.le.ac.uk",
  "subject": "GRB060210: Swift XRT Refined Analysis",
  "submitter": "Andy Beardmore at U Leicester  <apb@star.le.ac.uk>",
  "eventId": "GRB 060210"
}