{
  "bibcode": "2009GCN..9984....1H",
  "body": "J. Haislip, D. Reichart, K. Ivarsen, A. LaCluyze, A. Foster, J. Moore, A. \nOza, M. Schubel, J. Styblova, A. Trotter, J. A. Crain, and M. Nysewander \nreport:\n\nSkynet has continued to observe the afterglow (Haislip et al., GCN 9937) of \nGRB 090926A (Bissaldi, GCN 9933) with four of the 16\" PROMPT telescopes at \nCTIO in BVRI.\n\nAfter peaking in brightness approximately 1 day after the trigger (Haislip \net al., GCN 9953), the afterglow had been fading with a power-law index of \napproximately -1.4 until approximately 4 days after the trigger (Haislip, \net al., GCN 9982).\n\nBetween 4 and 6 days after the trigger, the afterglow has been fading with \na shallower power-law index of approximately -0.8.\n\nAt 6.1 days after the trigger, its magnitude is R = 20.40 +0.11 -0.10 \n(statistical) +/-  0.57 (systematic; calibrated to 172 USNO B1 stars).\n\nSkynet's most recent BVRI light curve, calibrated to USNO B1 and NOMAD \nstars, can be found here:\n\nhttp://skynet.unc.edu/grb/grb090926a.jpg",
  "circularId": 9984,
  "createdOn": 1254602953000,
  "email": "haislip@physics.unc.edu",
  "subject": "GRB 090926A: Skynet/PROMPT Observations of Day 4 - 6 Fading Rate",
  "submitter": "Josh Haislip at U.North Carolina  <haislip@physics.unc.edu>",
  "eventId": "GRB 090926A"
}