2010年5月
BINARY NEUTRON STARS IN QUASI-EQUILIBRIUM
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
- ,
- 巻
- 188
- 号
- 1
- 開始ページ
- 187
- 終了ページ
- 208
- 記述言語
- 英語
- 掲載種別
- DOI
- 10.1088/0067-0049/188/1/187
- 出版者・発行元
- IOP PUBLISHING LTD
Quasi-equilibrium sequences of binary neutron stars are constructed for a variety of equations of state in general relativity. Einstein's constraint equations in the Isenberg-Wilson-Mathews approximation are solved together with the relativistic equations of hydrostationary equilibrium under the assumption of irrotational flow. We focus on unequal-mass sequences as well as equal-mass sequences, and compare those results. We investigate the behavior of the binding energy and total angular momentum along a quasi-equilibrium sequence, the endpoint of sequences, and the orbital angular velocity as a function of time, changing the mass ratio, the total mass of the binary system, and the equation of state of a neutron star. It is found that the orbital angular velocity at the mass-shedding limit can be determined by an empirical formula derived from an analytic estimation. We also provide tables for 160 sequences, which will be useful as a guideline of numerical simulations for the inspiral and merger performed in the near future.
- リンク情報
-
- DOI
- https://doi.org/10.1088/0067-0049/188/1/187
- arXiv
- http://arxiv.org/abs/arXiv:1005.0958
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000277302500008&DestApp=WOS_CPL
- URL
- http://arxiv.org/abs/1005.0958v1
- URL
- http://arxiv.org/pdf/1005.0958v1 本文へのリンクあり
- ID情報
-
- DOI : 10.1088/0067-0049/188/1/187
- ISSN : 0067-0049
- arXiv ID : arXiv:1005.0958
- Web of Science ID : WOS:000277302500008