Axisymmetric and stationary magnetic field structures in neutron star crusts under various boundary conditions

Kotaro Fujisawa, Shota Kisaka

研究成果: Chapter

抄録

We have calculated many Hall equilibrium states within the neutron star crust under various boundary conditions in order to investigate the influences of the boundary conditions clearly. We have found two important features of these solutions. First, the magnitude of the core magnetic fields affects the toroidal to total magnetic field energy ratio within the crust (Et /E). If the core magnetic fields are vanished, the crustal toroidal magnetic fields become weak and the typical energy ratio is only Et / E ∼0.1%. If the core magnetic fields are strong, however, the crustal toroidal magnetic fields become strong and the typical ratio reaches Et / E ∼15%. Second, the core toroidal magnetic fields and the twisted magnetosphere around the star make the size of the crustal toroidal magnetic field regions large. Therefore if the strong core magnetic fields have strong toroidal component, both strength and size of the crustal toroidal magnetic fields become large. These results show that the Hall MHD evolutions would be deeply affected by both inner and outer boundary conditions.

本文言語English
ホスト出版物のタイトルProceedings of the International Astronomical Union
出版社Cambridge University Press
ページ427-428
ページ数2
9
S302
ISBN(印刷版)9781107044982
DOI
出版ステータスPublished - 2014
外部発表はい

出版物シリーズ

名前Proceedings of the International Astronomical Union
番号S302
9
ISSN(印刷版)17439213
ISSN(電子版)17439221

ASJC Scopus subject areas

  • 天文学と天体物理学

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