Structure in the early afterglow light curve of the γ-ray burst of 29 March 2003

Makoto Uemura (), Taichi Kato, Ryoko Ishioka, Hitoshi Yamaoka, Berto Monard, Daisaku Nogami, Hiroyuki Maehara, Atsushi Sugie and Susumu Takahashi
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Makoto Uemura: Kyoto University
Taichi Kato: Kyoto University
Ryoko Ishioka: Kyoto University
Hitoshi Yamaoka: Kyushu University
Berto Monard: Bronberg Observatory
Daisaku Nogami: Kyoto University
Hiroyuki Maehara: VSOLJ
Atsushi Sugie: Dynic Astronomical Observatory
Susumu Takahashi: Dynic Astronomical Observatory

Nature, 2003, vol. 423, issue 6942, 843-844

Abstract: Abstract Gamma-ray bursts (GRBs) are energetic explosions that for 0.01–100 s are the brightest γ-ray sources in the sky1,2. Observations of the early evolution of afterglows are expected to provide clues about the nature of the bursts, but their rapid fading has hampered such studies; some recent rapid localizations3,4,5 of bursts have improved the situation. Here we report an early detection of the very bright afterglow of the burst of 29 March 2003 (GRB030329). Our data show that, even early in the afterglow phase, the light curve shows unexpectedly complicated structures superimposed on the fading background.

Date: 2003
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DOI: 10.1038/nature01735

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