Two-Dimensional Simulation of Core-Collapse Supernovae: Role of Anisotropic Neutrino Radiation on Explosion Dynamics

Astronomy and Astrophysics – Astrophysics

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Supernovae, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages

Scientific paper

We perform two-dimensional numerical simulations of core-collapse supernovae. Starting from a rotating progenitor, we obtain a deformed neutrino sphere in a oblate shape in which the ratio of the polar axis to the equatorial one is ~ 5%. This implies anisotropy of ~ 5% in the emerging neutrino flux. Combined with our previous results, this anisotropy in neutrino radiation is sufficient to increase the explosion energy compared with that of spherical models, and can lead to a successful explosion.

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