{
  "bibcode": "2007GCN..6280....1B",
  "body": "E. Begrer (Carnegie) reports on behalf of a larger collaboration:\n\n\"We observed the XRT error circle of GRB 070412 (GCN 6273) with GMOS on \nthe Gemini-north telescope for a total of 360 sec in i-band starting on \n2007 Apr 12.229 UT (4 hr after the burst).  Within the XRT error circle we \nfind a single faint object with i=23.9+/-0.2 mag (using the zeropoint on \nthe GMOS website) located at:\n\n \tRA = 12:06:10.585\n \tDEC = +40:08:24.83  (J2000)\n\nwith an uncertainty of about 0.2\".  This position is 3.2\" away from the \ncenter of the XRT error circle (GCN 6273) and 2.1\" away from the I-band \nsource discussed in GCN 6279.  The non-detection of an object at this \nposition in the R-band to a limit of 24 mag at t=1 hr (GCN 6276) indicates \nthat this object (if it is the afterglow) is red, with R-I ~ 1.6 mag for a \nfading rate of t^-1.\"",
  "circularId": 6280,
  "createdOn": 1176362614000,
  "email": "eberger@ociw.edu",
  "subject": "GRB 070412: Gemini/GMOS afterglow candidate",
  "submitter": "Edo Berger at Carnegie Obs  <eberger@ociw.edu>",
  "eventId": "GRB 070412"
}