{
  "bibcode": "2007GCN..6294....1R",
  "body": "E. Rol, N. Tanvir (U. of Leicester), A. Levan (U. of Warwick), L. Fuhrman \n(JAC), report for a larger collaboration:\n\nWe observed the field of GRB070412 between 4.3 and 5.4 hours after the GRB \ntrigger (Romano et al., GCNC 6273). At the position of the X-ray \nafterglow (Romano et al., GCNC 6282), we detect no source. We place the \nfollowing 5-sigma limiting magnitudes at this position:\n\n      J    20.7\n      H    20.1\n      K    19.8\n\nThe magnitudes are calibrated with respect to the 2MASS catalogue.",
  "circularId": 6294,
  "createdOn": 1176414409000,
  "email": "er45@star.le.ac.uk",
  "subject": "GRB070412: UKIRT-WFCAM JHK upper limits",
  "submitter": "Evert Rol at U.Leicester  <er45@star.le.ac.uk>",
  "eventId": "GRB 070412"
}