A late, infrared flash from the afterglow of GRB 050319
  We report the detection of a bright, near-infrared flash from the afterglow of GRB 050319, 6.15 hours after the burst. The IR flash faded rapidly from J=13.12 mag. to J > 15.5 mag. in about 4 minutes. There are no reported simultaneous observations at other wavelengths making it an unique event. We study the implications of its late timing in the context of current theoretical models for GRB afterglows. 
Koshy George, Dipankar P.K. Banerjee, Thyagarajan Chandrasekahar,   Nagarhalli M. Ashok