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- W3102132568 abstract "The spectra of SN 2003dh, identified in the afterglow of GRB 030329, are modeled using radiation transport codes. It is shown that SN 2003dh had a high explosion kinetic energy (~4 × 1052 ergs in spherical symmetry), making it one of the most powerful hypernovae observed so far and supporting the case for association between hypernovae and gamma-ray bursts. However, the light curve derived from fitting the spectra suggests that SN 2003dh was not as bright as SN 1998bw, ejecting only ~0.35 M☉ of 56Ni. The spectra of SN 2003dh resemble those of SN 1998bw around maximum, but later they look more like those of the less energetic hypernova SN 1997ef. The spectra and the inferred light curve can be modeled adopting a density distribution similar to that used for SN 1998bw at v > 25,000 km s-1 but more like that of SN 1997ef at lower velocities. The mass of the ejecta is ~8 M☉, somewhat less than in the other two hypernovae. The progenitor must have been a massive star (M ~ 35-40 M☉), as for other hypernovae. The need to combine different one-dimensional explosion models strongly indicates that SN 2003dh was an asymmetric explosion." @default.
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- W3102132568 date "2003-12-02" @default.
- W3102132568 modified "2023-10-12" @default.
- W3102132568 title "The Type Ic Hypernova SN 2003dh/GRB 030329" @default.
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- W3102132568 doi "https://doi.org/10.1086/381259" @default.
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