{
  "bibcode": "2010GCN.10942....1B",
  "body": "E. Berger (Harvard) reports:\n\n\"We observed the field of the short GRB 100628 (GCN 10895) with the\nChandra X-ray Observatory starting on 2010 July 2.79 UT for a total of\n19.8 ksec.  Within the XRT error circle (GCN 10907) we detect a single\npoint source at the following coordinates (J2000):\n\n       RA = 15:03:53.33\n       DEC = -31:39:50.5\n\nThis object is coincident with the bright core of the galaxy \"G1\"\n(GCNs 10902,10908).  The flux of the object is about 4.8e-14\nerg/cm^2/s, in good agreement with the flux measured with the\nSwift/XRT of about 4.6e-14 erg/cm^2/s (see Swift/XRT GRB lightcurve\nrepository: http://www.swift.ac.uk/xrt_curves/00426114/).  Given the\nposition of the source and its constant flux we conclude that it is\ndue to AGN activity and is therefore not related to GRB 100628 (see\nalso GCN 10941).\n\nFurthermore, we do not detect any emission at the location of the new\nand possibly fading XRT source (GCN 10941) to a 3-sigma limit of\n<5e-15 erg/cm^2/s, about a factor of 15 times fainter than the initial\nXRT detection.\n\nWe thank Harvey Tananbaum and the CXO scheduling staff for rapidly\napproving and executing this observation.\"",
  "circularId": 10942,
  "createdOn": 1278455235000,
  "email": "eberger@cfa.harvard.edu",
  "subject": "GRB 100628A:  Chandra observations",
  "submitter": "Edo Berger at Harvard  <eberger@cfa.harvard.edu>",
  "eventId": "GRB 100628A"
}