A 450 Day Light Curve of the Radio Afterglow of GRB 970508: Fireball Calorimetry

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A 450-day Light Curve of the Radio Afterglow of GRB 970508: Fireball Calorimetry

We report on the results of an extensive monitoring campaign of the radio afterglow of GRB 970508, lasting 450 days after the burst. The spectral and temporal radio behavior indicate that the fireball has undergone a transition to sub-relativistic expansion at t ∼ 100 days. This allows us to perform “calorimetry” of the explosion. The derived total energy, E0 ∼ 5 × 10 50 erg is well below the ∼...

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ژورنال

عنوان ژورنال: The Astrophysical Journal

سال: 2000

ISSN: 0004-637X,1538-4357

DOI: 10.1086/309024