{
  "bibcode": "2000GCN...600....1R",
  "body": "James Rhoads and Andy Fruchter (STScI) report:\n \nWe observed the candidate counterpart of GRB 000301c again on March 8.590\nin the K' filter using the NASA IRTF + NSFCam.  The magnitude of the transient\nrelative to the reference star 6\" west has decayed further to +3.32 +- 0.09,\ngiving K'=19.28 +- 0.09 (statistical error only).\nThis is a decay of 0.72 magnitudes in the two days since our preceding\nobservation (on March 6.595 UT).\n\nThis continued decay is in marked contrast to the \"standstill\" of the\noptical flux reported by Bernabei et al (GCNC 599), and leads us to\nbelieve that the source most likely is the transient counterpart of\nGRB 000301c despite its erratic behavior.  The near-IR flux showed a\ncomparable \"standstill\" behavior earlier (GCNC 572, 577, 586, 587) and then\nentered a steeper decline.  The total decay to date in K' has been 1.76\nmagnitudes, and during the 72 hours preceding this observation the K' flux\ndecayed approximately as t**(-2.2).\n\nExtrapolation of this object's light curve from earlier data appears\nfraught with difficulty.  Further observation is therefore strongly\nurged at all wavelengths.",
  "circularId": 600,
  "createdOn": 952614132000,
  "email": "rhoads@stsci.edu",
  "subject": "GRB 000301c: K' observations",
  "submitter": "James Rhoads at STScI  <rhoads@stsci.edu>",
  "eventId": "GRB 000301C"
}