{
  "bibcode": "2002GCN..1557....1F",
  "createdOn": 1033335392000,
  "body": "A. Fruchter, L. Strolger, B. Mobasher,  J. Rhoads,  A. Levan, I. Burud\n(STScI),  A. Becker (Lucent) report for a larger collaboration:\n\nWe observed the field of  XRF 020903 on both September 3.1 and 9.1 (UT) using\nthe Mosaic imager on the CTIO 4-m telescope.  Images were taken in B, R and I\non the first night and in only R on the second.  An image subtraction\nperformed shortly after the second night showed no variability consistent with\nthat expected of a GRB/XRF.  \n\nIn light of the report of the possible discovery of a counterpart to this\nobject (GCN 1554) we have re-examined our data.    We find that the object\ncited as the possible counterpart declined by approximately 0.2 mags in R\nbetween our two epochs.   \n\nUnfortunately, we do not have a reliable absolute calibration of the field at\nthis moment.  We expect that a better calibration and more complete analysis\nwill be available on a relatively short timescale.",
  "subject": "XRF 020903: R band observations",
  "editedOn": 1777052644566,
  "submitter": "Andrew S. Fruchter at STScI  <fruchter@mindspring.com>",
  "circularId": 1557,
  "eventId": "XRF 020903",
  "email": "fruchter@mindspring.com",
  "editedBy": "Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov>",
  "version": 2
}