{
  "bibcode": "2004GCN..2741....1F",
  "body": "D.B. Fox (Caltech) reports on behalf of a larger collaboration:\n\n\"Further analysis of our Robotic P60 observations of the candidate\noptical afterglow of GRB040924 (GCNs 2734, 2735) reveals that the\ncandidate afterglow fades by 0.87 +/- 0.08 mag from our first exposure\n(mean epoch 12:07:57 UT) to our last exposure (mean epoch 12:42:09\nUT).  Referenced to the time of the burst this corresponds to a decay\nwith power-law index alpha approximately equal to -0.7.\n\nThe coordinates of the candidate referenced to the GSC-2.2 are:\n\n    RA 02:06:22.55, Dec +16:06:48.8 (J2000)\n\nwith coordinate uncertainties of approximately 0.2\".  \n\nPhotometric calibration of the data against the F-emulsion magnitudes\nof the GSC-2.2 yields an R-band magnitude of the candidate at our\nfirst epoch (945 sec after the burst) of R=18.0 mag.\n\nImages and a finding chart for the candidate may be found at:\n <http://www.astro.caltech.edu/~derekfox/grb040924/>.\"",
  "circularId": 2741,
  "createdOn": 1096090279000,
  "email": "derekfox@astro.caltech.edu",
  "subject": "GRB040924:  Optical afterglow properties",
  "submitter": "Derek Fox at CIT  <derekfox@astro.caltech.edu>",
  "eventId": "GRB 040924"
}