Axisymmetric and stationary structures of magnetized barotropic stars with extremely strong magnetic fields deep inside

Kotaro Fujisawa, Shin'ichirou Yoshida, Yoshiharu Eriguchi

研究成果: Article

34 引用 (Scopus)

抄録

We have succeeded in obtaining magnetized star models that have extremely strong magnetic fields in the interior of the star. In our formulation, arbitrary functions of the magnetic flux function appear in the expression for the current density. By appropriately choosing the functional form for one of the arbitrary functions that corresponds to the distribution of the toroidal current density, we have obtained configurations with magnetic field distributions that are highly localized within the central part and near the magnetic axis region. The absolute values of the central magnetic fields are stronger than those of the surface region by two orders of magnitude. By applying our results to magnetars, the internal magnetic poloidal fields could be 10 17G, although the surface magnetic fields are about 10 15G in the case of magnetars. For white dwarfs, the internal magnetic poloidal fields could be 10 12G, when the surface magnetic fields are 10 9-10 10G.

元の言語English
ページ(範囲)434-448
ページ数15
ジャーナルMonthly Notices of the Royal Astronomical Society
422
発行部数1
DOI
出版物ステータスPublished - 2012 5
外部発表Yes

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magnetic field
stars
magnetars
magnetic fields
current density
magnetic flux
density current
formulations
configurations
distribution

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

これを引用

Axisymmetric and stationary structures of magnetized barotropic stars with extremely strong magnetic fields deep inside. / Fujisawa, Kotaro; Yoshida, Shin'ichirou; Eriguchi, Yoshiharu.

:: Monthly Notices of the Royal Astronomical Society, 巻 422, 番号 1, 05.2012, p. 434-448.

研究成果: Article

Fujisawa, Kotaro ; Yoshida, Shin'ichirou ; Eriguchi, Yoshiharu. / Axisymmetric and stationary structures of magnetized barotropic stars with extremely strong magnetic fields deep inside. :: Monthly Notices of the Royal Astronomical Society. 2012 ; 巻 422, 番号 1. pp. 434-448.
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