{
  "bibcode": "2002GCN..1362....1R",
  "body": "James Rhoads, Brad Whitmore, Abhijit Saha, Andy Dolphin,\nAndy Fruchter, and Chryssa Kouveliotou report on behalf of a larger\ncollaboration:\n\nWe observed the error circle of GRB 020409 with the 3.5m WIYN\ntelescope + Mini Mosaic imager at Kitt Peak from 02:51 to 04:25 UT\non 2002 April 11, obtaining a total of 2000 seconds integration\nin R band and 1000 seconds each in B and I.\nComparison with the POSS plates shows no new objects brighter than the\nPOSS plate limit.\n\nPreliminary application of the color-color search method (Rhoads 2001,\nApJ 557, 943) in the (B-R) vs (R-I) plane shows no convincing afterglow\ncandidates down to the limit of the B and I images.\n\nThe 5 sigma detection limit in the R band image is estimated to be in\nthe range R = 23.5 to R=24, based on comparison with USNO-A2 photometry.\n\nA second epoch of R band observations is underway.",
  "circularId": 1362,
  "createdOn": 1018580486000,
  "email": "rhoads@stsci.edu",
  "subject": "GRB 020409",
  "submitter": "James Rhoads at STScI  <rhoads@stsci.edu>",
  "eventId": "GRB 020409"
}