{
  "bibcode": "2008GCN..8273....1C",
  "body": "C. Clemens (MPE Garching), A. Rossi (Tautenburg Obs.), J. Greiner, S. McBreen, \nT. Kruehler, A. Yoldas (all MPE Garching), A. Kupcu Yoldas (ESO) and G. \nSzokoly (Eoetvoes Univ., Budapest) report on behalf of the GROND team:\n\nWe observed the field of GRB 080916C for a second time with GROND at 08:04 UT \non September 19th, 2008, 3.3 d after the GBM trigger with 54 min of effective \nexposures. Observations were performed at an average seeing of 1.7\" and at an \naverage airmass of 1.7.\n\nWe do not detect the afterglow candidate first reported by Clemens et al. (GCN \n#8257) with the following 5-sigma upper limits:\n\nz' > 22.7 mag.\n\nThese measurements strongly indicate a fading of the source compared to our \nfirst epoch observations. We therefore propose this is to be the afterglow of \nGRB 080916C.",
  "circularId": 8273,
  "createdOn": 1221818887000,
  "email": "cclemens@mpe.mpg.de",
  "subject": "GRB 080916C: GROND Confirmation of the Optical Afterglow",
  "submitter": "Christian Clemens at MPE  <cclemens@mpe.mpg.de>",
  "eventId": "GRB 080916C"
}