Optical Variability of the Afterglow of GRB 030329

Details Optical Variability of the Afterglow of GRB 030329 Optical Variability of the Afterglow of GRB 030329

Mar 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004pasj...56s..77u&link_type=abstract

Publications of the Astronomical Society of Japan, Vol.56, No.SP1, pp. S77-S81

Astronomy and Astrophysics

Astronomy

3

Gamma Rays: Bursts

Scientific paper

We report on the optical light curve of the afterglow of GRB 030329. Our observation combined with publicly available data sets revealed that the light curve was rich in unexpectedly complicated structures throughout ˜ 6 days after the burst. Our early observation indicates that the light curve can be described by a single power-law model with bumps until a supernova component became dominant. The bumps superimposed on a fading trend had roughly constant amplitudes and colors. The long-lived, large-amplitude variations indicate that additional energy was supplied for the shock region. The refreshed shock scenario is most plausible. The observed slopes of the bumps during early times, however, contradict the prediction of this model.

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