Rotational stellar structures based on the Lagrangian variational principle

Nobutoshi Yasutake; Kotaro Fujisawa; Shoichi Yamada

doi:10.1088/1742-6596/861/1/012006

Rotational stellar structures based on the Lagrangian variational principle

Nobutoshi Yasutake^*, Kotaro Fujisawa, Shoichi Yamada

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

A new method for multi-dimensional stellar structures is proposed in this study. As for stellar evolution calculations, the Heney method is the defacto standard now, but basically assumed to be spherical symmetric. It is one of the difficulties for deformed stellar-evolution calculations to trace the potentially complex movements of each fluid element. On the other hand, our new method is very suitable to follow such movements, since it is based on the Lagrange coordinate. This scheme is also based on the variational principle, which is adopted to the studies for the pasta structures inside of neutron stars. Our scheme could be a major break through for evolution calculations of any types of deformed stars: proto-planets, proto-stars, and proto-neutron stars, etc.

Original language	English
Article number	012006
Journal	Journal of Physics: Conference Series
Volume	861
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/861/1/012006
Publication status	Published - 2017 Jun 13
Event	5th International Workshop Compact Stars in the QCD Phase Diagram, CSQCD 2016 - L'Aquila, Italy Duration: 2016 May 23 → 2016 May 27

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1088/1742-6596/861/1/012006

Cite this

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title = "Rotational stellar structures based on the Lagrangian variational principle",

abstract = "A new method for multi-dimensional stellar structures is proposed in this study. As for stellar evolution calculations, the Heney method is the defacto standard now, but basically assumed to be spherical symmetric. It is one of the difficulties for deformed stellar-evolution calculations to trace the potentially complex movements of each fluid element. On the other hand, our new method is very suitable to follow such movements, since it is based on the Lagrange coordinate. This scheme is also based on the variational principle, which is adopted to the studies for the pasta structures inside of neutron stars. Our scheme could be a major break through for evolution calculations of any types of deformed stars: proto-planets, proto-stars, and proto-neutron stars, etc.",

author = "Nobutoshi Yasutake and Kotaro Fujisawa and Shoichi Yamada",

note = "Publisher Copyright: {\textcopyright} Published under licence by IOP Publishing Ltd.; 5th International Workshop Compact Stars in the QCD Phase Diagram, CSQCD 2016 ; Conference date: 23-05-2016 Through 27-05-2016",

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TY - JOUR

T1 - Rotational stellar structures based on the Lagrangian variational principle

AU - Yasutake, Nobutoshi

AU - Fujisawa, Kotaro

AU - Yamada, Shoichi

N1 - Publisher Copyright: © Published under licence by IOP Publishing Ltd.

PY - 2017/6/13

Y1 - 2017/6/13

N2 - A new method for multi-dimensional stellar structures is proposed in this study. As for stellar evolution calculations, the Heney method is the defacto standard now, but basically assumed to be spherical symmetric. It is one of the difficulties for deformed stellar-evolution calculations to trace the potentially complex movements of each fluid element. On the other hand, our new method is very suitable to follow such movements, since it is based on the Lagrange coordinate. This scheme is also based on the variational principle, which is adopted to the studies for the pasta structures inside of neutron stars. Our scheme could be a major break through for evolution calculations of any types of deformed stars: proto-planets, proto-stars, and proto-neutron stars, etc.

AB - A new method for multi-dimensional stellar structures is proposed in this study. As for stellar evolution calculations, the Heney method is the defacto standard now, but basically assumed to be spherical symmetric. It is one of the difficulties for deformed stellar-evolution calculations to trace the potentially complex movements of each fluid element. On the other hand, our new method is very suitable to follow such movements, since it is based on the Lagrange coordinate. This scheme is also based on the variational principle, which is adopted to the studies for the pasta structures inside of neutron stars. Our scheme could be a major break through for evolution calculations of any types of deformed stars: proto-planets, proto-stars, and proto-neutron stars, etc.

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Rotational stellar structures based on the Lagrangian variational principle

Abstract

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