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

Author

Listed:
  • 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)

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.

Suggested Citation

  • Makoto Uemura & Taichi Kato & Ryoko Ishioka & Hitoshi Yamaoka & Berto Monard & Daisaku Nogami & Hiroyuki Maehara & Atsushi Sugie & Susumu Takahashi, 2003. "Structure in the early afterglow light curve of the γ-ray burst of 29 March 2003," Nature, Nature, vol. 423(6942), pages 843-844, June.
    • Handle: RePEc:nat:nature:v:423:y:2003:i:6942:d:10.1038_nature01735
    DOI: 10.1038/nature01735
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