{
  "bibcode": "2006GCN..4768....1R",
  "body": "D. Reichart, A. LaCluyze, M. Nysewander, and J. Haislip report on behalf of\nthe UNC team of the FUN GRB collaboration:\n\nIn addition to detecting the afterglow (Fynbo et al., GCN 4683) of GRB\n060206 (Morris et al., GCN 4682) in I band 27.0 hours after the burst with\nPROMPT (Kirschbrown et al., GCN 4712; LaCluyze et al., GCN 4750) and 51.3\nhours after the burst with SOAR (LaCluyze et al., GCN 4750), we detected\nthe afterglow in i' band 26.0 hours after the burst with PROMPT, in V band\n51.7 hours after the burst with SOAR, and in R band 51.9 hours after the\nburst with SOAR.\n\nAt 26.0 hours after the burst, we measure i' = 19.83 +/- 0.22 mag.\n\nFrom our V and R photometry and a simple model of the Ly-alpha forest, we\ninfer i' = 21.55 +/- 0.08 mag at 51.8 hours after the burst.  (As a check,\nsimple interpolation between our R and I photometry yeilds i' = 21.36 +/-\n0.05 mag at 51.6 hours after the burst.)  This implies a temporal index of\n-2.3 +/- 0.3 between 26.0 and 51.8 hours after the burst, which is\nconsistent with and independent of our measurement of -2.20 +/- 0.26\nbetween 27.0 and 51.3 hours after the burst in I band (LaCluyze et al., GCN\n4750).\n\nPROMPT and SOAR light curves can be viewed at:\n\nhttp://www.physics.unc.edu/~reichart/grb060206.eps\n\nContinued monitoring is strongly encouraged, particularly given that no\nbreak is observed in X rays (Morris et al., GCN 4764).",
  "circularId": 4768,
  "createdOn": 1140154262000,
  "email": "reichart@physics.unc.edu",
  "subject": "GRB 060206: Confirmation of Rapid Fading at Optical Wavelengths",
  "submitter": "Daniel E. Reichart at U.North Carolina  <reichart@physics.unc.edu>",
  "eventId": "GRB 060206"
}