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astro-ph2003
Rebrightening of XRF 030723: further evidence for a two-component jet in gamma-ray burst
Y. F. Huang, X. F. Wu, Z. G. Dai +2
Optical afterglows from two-component jets under various configurations are investigated numerically. Generally, the light curve is characterized by a rapid rebrightening when the…
astro-ph2003
GRB 030226 in a Density-Jump Medium
Z. G. Dai, X. F. Wu
We present an explanation for the unusual temporal feature of the GRB 030226 afterglow. The R-band afterglow of this burst faded as ~ t^{-1.2} in ~ 0.2 days after the burst, rebrig…