{
  "bibcode": "2006GCN..5254....1M",
  "body": "V. Mangano, V. La Parola, E. Troja, G. Cusumano,\nT. Mineo (INAF-IASFPA), A. Parsons (GSFC), J. Kennea (PSU)\non behalf of the Swift-XRT team\n\nWe have analyzed the first two orbits of data of GRB060614\n(Parsons et al 2006, GCN 5252).\nThe XRT data set consists of 370 s exposure in Windowed\nTiming (WT) in the first orbit followed by 2.1 ks exposure\nin Photon Counting (PC) mode in the second orbit.\n\nThe refined position of the source is\n\n     RA  (2000) =  21h 23m 32.00s  \n     Dec (2000) = -53d 01' 39.4\"\n\nwith an uncertainty of 3.7 arcsec (90% containment).\n\nThis position is 7.7 arcsec from the on board\nXRT position, 3.5 arcsec from the UVOT afterglow\nposition and 51.7 arcsec from the BAT position\n(Parsons et al. 2006, GCN 5252).\n\nThe 0.2-10 keV X-ray light curve shows an\nexponential decay with a characteristic decay time\nof 75 s during all the first orbit, and a nearly\nflat behaviour at the level of 0.2 counts/s during\nthe second orbit that starts 4500 s after the trigger.\nThe WT light curve is highly piled-up, with an initial\n(corrected) count rate of about 1300 counts/s.\nFrom the present data we cannot give any reliable prediction\nfor the light curve evolution in the next hours. Further\ndata will be avaliable after the end of the Malidi gap\n(2006 June 15, 1:27 UT).\n\nThe WT data show strong spectral evolution with time,\nwith an average photon index of 1.65 +/- 0.04 in the\ntime interval 90-270 s from the trigger and an\naverage photon index of 2.95 +/- 0.11 in the time\ninterval 270-460 s. WT spectra show evidence of\nabsorption at the level of (1.3 +/- 0.3)e21 cm^-2,\nin excess with respect to the Galactic N_H of 3.e20 cm^-2.\n\nThe PC spectrum extracted from the second orbit of data\nis well fitted by an absorbed power law with photon index\n1.8 +/- 0.2 and N_H consistent with the Galactic value.\nThe average 0.2-10 keV unabsorbed flux during the\nsecond orbit is 9.3e-12 erg cm^-2 s^-1.\n\nThis Circular is an official product of the Swift XRT Team.",
  "circularId": 5254,
  "createdOn": 1150309909000,
  "email": "vanessa@ifc.inaf.it",
  "subject": "GRB060614: Swift-XRT refined analysis",
  "submitter": "Vanessa Mangano at INAF-IASFPA  <vanessa@ifc.inaf.it>",
  "eventId": "GRB 060614"
}