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Recent Status of Multi-Dimensional Core-Collapse Supernova Models

Published online by Cambridge University Press:  27 October 2016

Kei Kotake ,
Ko Nakamura  and
Tomoya Takiwaki
Kei Kotake
Affiliation:
Department of Applied Physics, Fukuoka University, Jonan, Nanakuma, Fukuoka 814-0180, Japan
Ko Nakamura
Affiliation:
Faculty of Science and Engineering, Waseda University, Ohkubo 3-4-1, Shinjuku, Tokyo 169-8555
Tomoya Takiwaki
Affiliation:
Astrophysical Big Bang Laboratory, RIKEN, Saitama, 351-0198, Japan
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Abstract

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We report a recent status of multi-dimensional neutrino-radiation hydrodynamics simulations for clarifying the explosion mechanism of core-collapse supernovae (CCSNe). In this contribution, we present two results, one from two-dimensional (2D) simulations using multiple progenitor models and another from three-dimensional (3D) rotational core-collapse simulation using a single progenitor. From the first ever systematic 2D simulations, it is shown that the compactness parameter ξ that characterizes the structure of the progenitors is a key to diagnose the explodability of neutrino-driven explosions. In the 3D rotating model, we find a new type of rotation-assisted explosion, which makes the explosion energy bigger than that in the non-rotating model. The unique feature has not been captured in previous 2D self-consistent rotational models because the growth of non-axisymmetric instabilities is the key to foster the explosion by enhancing the energy transport from the proto-neutron star to the gain region.

Keywords

Hydrodynamics—Neutrinos—Supernovae: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29A: Astronomy in Focus , August 2015 , pp. 340 - 344
Copyright
Copyright © International Astronomical Union 2016 

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