{
  "bibcode": "2014GCN.16989....1C",
  "body": "S. B. Cenko (NASA/GSFC) and D. A. Perley (Caltech) report on behalf of a larger collaboration:\n\nWe have imaged the location of the optical afterglow (Gorbovskoy et al., GCN 16972) of the Fermi GBM (Roberts et al., GCN 16971) and LAT (Bissaldi et al., GCN 16969) GRB141028A with the robotic Palomar 60 inch telescope.  Using nearby point sources from the Sloan Digital Sky Survey for reference, we measure the following r'-band magnitudes in our P60 images:\n\nr' = 20.09 +/- 0.06 at dt = 15.8 hr after the burst\nr' = 21.00 +/- 0.05 at dt = 39.3 hr after the burst\n\nBased on these observations, we infer a power-law decay index of alpha ~ 0.9.",
  "circularId": 16989,
  "createdOn": 1414640560000,
  "email": "brad.cenko@nasa.gov",
  "subject": "GRB 141028A: P60 Observations and Decay Index",
  "submitter": "S. Bradley Cenko at NASA/GSFC  <brad.cenko@nasa.gov>",
  "eventId": "GRB 141028A"
}