{
  "bibcode": "2005GCN..3834....1C",
  "body": "S. Bradley Cenko (Caltech) and Derek B. Fox (Penn State) report on behalf\nof a larger collaboration:\n\nWe have continued to image the afterglow (GCN 3829) of GRB 050820 (GCN\n3830) with the automated Palomar 60-inch telescope.  Using the USNO-B1\nstar located at RA=22:29:39.88, Dec=+19:32:47.5 (USNO-B1 1095-0581263, R =\n15.21) as a reference, we find, after rising to a peak magnitude of R =\n14.7 approximately 7 minutes after the burst, the afterglow has exhibited\na relatively smooth power-law decay with index alpha = -0.9.  In an image\ntaken ~ 93 minutes after the burst, the afterglow has a magnitude of R ~\n17.4.\n\nFurther observations are planned.",
  "circularId": 3834,
  "createdOn": 1124534229000,
  "email": "cenko@srl.caltech.edu",
  "subject": "GRB 050820: P60 Temporal Decay Index",
  "submitter": "S. Bradley Cenko at Caltech  <cenko@srl.caltech.edu>",
  "eventId": "GRB 050820"
}