{
  "bibcode": "2011GCN.11990....1K",
  "body": "H. A. Krimm (GSFC/USRA),V. D'Elia (ASDC) and G. Stratta (ASDC), report on\nbehalf of the Swift team:\n\nSwift XRT and UVOT instruments observed the center of the error rectangle\nfor the MAXI-detected GRB 110426A (Nakahira et al, GCN Circ. 11980) on\ntwo occasions.  The first observation was for 5 ks starting 7 ks after\nthe MAXI trigger.  In this observation four point sources were found.\nOne is consistent with a source in the Digitized Sky Survey and the other\nthree were  of <3-sigma significance.  The second observation, also 5 ks,\nbegan 250 ks after then trigger.  In the second observation, the DSS source\nwas detected without having faded and two other weak sources were seen at\ndifferent locations.  Since there is no evidence for a fading source in\nthe XRT field of view, we conclude that we have not detected the afterglow\nof GRB 110426A.\n     However, we note that the reported 90% error box for GRB 110426A\n(Nakahira et al, GCN Circ. 11980) is approximately eight times the size\nof the XRT field of view. Therefore, it is likely that the true GRB\nlocation is outside the observed field.",
  "circularId": 11990,
  "createdOn": 1304430705000,
  "email": "hans.krimm@nasa.gov",
  "subject": "GRB 110426A:  Swift/XRT non-detection",
  "submitter": "Hans Krimm at NASA-GSFC  <hans.krimm@nasa.gov>",
  "eventId": "GRB 110426A"
}