Bipolar Supernova Explosions: Nucleosynthesis and Implications for Abundances in Extremely Metal-Poor Stars

@article{Maeda2003BipolarSE,
  title={Bipolar Supernova Explosions: Nucleosynthesis and Implications for Abundances in Extremely Metal-Poor Stars},
  author={Keiichi Maeda and Ken’ichi Nomoto},
  journal={The Astrophysical Journal},
  year={2003},
  volume={598},
  pages={1163-1200}
}
Hydrodynamics and explosive nucleosynthesis in bipolar supernova explosions are examined to account for some peculiar properties of hypernovae as well as peculiar abundance patterns of metal-poor stars. The explosion is assumed to be driven by bipolar jets that are powered by accretion onto a central remnant. The energy injection rate by the jets is assumed to be proportional to the accretion rate, i.e., ?jet = ?c2. We explore the features of the explosions with varying progenitors' masses and… Expand
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References

SHOWING 1-10 OF 85 REFERENCES
Jet-induced Explosions of Core Collapse Supernovae
We numerically studied the explosion of a supernova caused by supersonic jets present in its center. The jets are assumed to be generated by a magnetorotational mechanism when a stellar coreExpand
Collapsars: Gamma-ray bursts and explosions in 'failed supernovae'
Using a two-dimensional hydrodynamics code (PROMETHEUS), we explore the continued evolution of rotating helium stars, Mα 10 M☉, in which iron-core collapse does not produce a successful outgoingExpand
Explosive Nucleosynthesis Associated with Formation of Jet-induced Gamma-Ray Bursts in Massive Stars
We perform two-dimensional relativistic hydrodynamic simulations in the context of collapsar model. Calculations of explosive nucleosynthesis are also accomplished. We investigate the influence ofExpand
Peculiar, low-luminosity Type II supernovae: low-energy explosions in massive progenitors?
A number of supernovae, classified as Type II, show remarkably peculiar properties such as an extremely low expansion velocity and an extraordinarily small amount of 5 6 Ni in the ejecta. We presentExpand
Supernovae, Jets, and Collapsars
We continue our study of the possible production of supernovae and a variety of high-energy transients by black hole formation in massive stars endowed with rotation: the "collapsar model." The blackExpand
Asymmetric Supernovae, Pulsars, Magnetars, and Gamma-Ray Bursts
We outline the possible physical processes, associated timescales, and energetics that could lead to the production of pulsars, jets, asymmetric supernovae, and weak ?-ray bursts in routineExpand
Nucleosynthesis in Gamma-Ray Burst Accretion Disks
We follow the nuclear reactions that occur in the accretion disks of stellar-mass black holes that are accret- ing at a very high rate, 0.01-1 Ms � 1 , as is realized in many current models forExpand
Gamma-ray signatures of supernovae and hypernovae
We review the characteristics of nucleosynthesis and radioactivities in “hypernovae”, i.e., supernovae with very large explosion energies (≳1052 ergs) and their γ-ray line signatures. We also discussExpand
Explosive Nucleosynthesis in Aspherical Hypernova Explosions and Late-Time Spectra of SN 1998bw
Aspherical explosion models for the hypernova (hyperenergetic supernova) SN 1998bw are presented. Nucleosynthesis in aspherical explosions is examined with a two-dimensional hydrodynamical code and aExpand
Explosive Nucleosynthesis in Hypernovae
We examine the characteristics of nucleosynthesis in "hypernovae," i.e., supernovae with very large explosion energies (1052 ergs). We carry out detailed nucleosynthesis calculations for theseExpand
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5
...