{
  "bibcode": "2012GCN.13394....1L",
  "body": "O.M. Littlejohns, P.A. Evans, K.L. Page (U. Leicester), A. Melandri, P.\nD'Avanzo (INAF-OAB) and J.Racusin (GSFC) reports on behalf of the\nSwift-XRT team:\n\nWe have analysed 10 ks of XRT data for GRB 120624B (Barthelmy  et al.\nGCN Circ. 13381), from 218.7 ks to 260.9 ks after the  BAT trigger. The\ndata are entirely in Photon Counting (PC) mode. Inside the BAT refined\nerror circle (Sakamoto et al. GCN Circ. 13384) we find an uncatalogued\nX-ray source (S1) at RA, Dec = 170.8845, +8.9283 which is equivalent\nto:\n\nRA (J2000): 11 23 32.28\nDec(J2000): +08 55 42.0\n\nwith an uncertainty of 4.3 arcsec (radius, 90% confidence). This source\nlies 40 arcsec from the NIR object reported by D'Avanzo et al. (GCN\nCirc. 13391). We cannot determine at the present time whether the\nsource is fading, the count-rate is approximately 2e-3 ct/sec in XRT.\n\nThere is a second source (S2) at RA, Dec = 170.8670, +8.9319 which is\nequivalent to:\n\nRA (J2000): 11 23 28.07\nDec(J2000): +08 55 54.8\n\nwith an uncertainty of 4.2 arcsec (radius, 90% confidence). This source\nis 70 arcsec away from the BAT refined position, just outside the error\ncircle. This source is 35 arcsec from the NIR counterpart. This source\nhas a count-rate of approximately 1e-3 ct/sec, and again we cannot\nmeasure variability at this time. \n\nAn image of the XRT field, with the two XRT sources, BAT error circle\nand NIR source marked, is available at\nhttp://www.swift.ac.uk/products/GRB120624B.png\n\nFurther observations are planned.\n\nThis circular is an official product of the Swift-XRT team.",
  "circularId": 13394,
  "createdOn": 1340879068000,
  "email": "oml2@le.ac.uk",
  "subject": "GRB 120624B: Swift-XRT observations",
  "submitter": "Owen Littlejohns at U of Leicester  <oml2@le.ac.uk>",
  "eventId": "GRB 120624B"
}