{
  "bibcode": "2005GCN..4347....1L",
  "body": "V. La Parola, V. Mangano, G. Cusumano (INAF-IASF), C. Pagani (INAF-OAB), and D. N. \nBurrows (PSU), D. Hinshaw (GSFC-SPSYS), F. Marshall (GSFC),  report on behalf of the Swift XRT team:\n\nWe report on further analysis of the XRT observation of GRB051211B (Mereghetti et al., GCN 4327; Pagani et al, GCN 4332; La Parola et al., GCN 4338).\n\nThe XRT observation begins 10.8 ksec after the INTEGRAL trigger.\nWe see a flat phase with a break at 18 ksec from the burst trigger, then the X-ray light-curve decays as a powerlaw with slope -1.16 +/- 0.18. \n\nThe spectrum of the PC data can be modelled with an absorbed power-law\nwith photon index Gamma = 2.0+/-0.3 (90% confidence level).\nThe absorbing column best fit value is (4.1 +/- 1.3)e21 cm-2, consistent with the Galactic value of 3.3e21 cm-2 \n\nThe flux at T+24h is 4.4e-13 erg cm^-2 s^-1",
  "circularId": 4347,
  "createdOn": 1134489865000,
  "email": "laparola@ifc.inaf.it",
  "subject": "GRB051211B: XRT refined analysis",
  "submitter": "Valentina La Parola at INAF-IASPA  <laparola@ifc.inaf.it>",
  "eventId": "GRB 051211B"
}