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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >Appearance of the prolate and the toroidal magnetic field dominated stars: Analytic approach
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Appearance of the prolate and the toroidal magnetic field dominated stars: Analytic approach

机译：扁长形和环形磁场主导的恒星的外观：解析方法

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摘要

We have analyzed magnetized equilibrium states and shown a condition for the appearance of the prolate and the toroidal magnetic field-dominated stars using analytic approaches. Both observations and numerical stability analysis support that the magnetized star would have prolate and large internal toroidal magnetic fields. In this context, many investigations concerning magnetized equilibrium states have been tried to obtain the prolate and the toroidal dominant solutions, but many of them have failed to obtain such configurations. Since the Lorentz force is a cross-product of current density and magnetic field, the prolate-shaped configurations and the large toroidal magnetic fields in stars require a special relation between current density and the Lorentz force. We have analyzed simple analytical solutions and found that the prolate and the toroidal-dominant configuration require non-force-free toroidal current density that flows in the opposite direction with respect to the bulk current within the star. Such current density results in the Lorentz force which makes the stellar shape prolate. Satisfying this special relation between the current density and the Lorentz force is a key to the appearance of the prolate and the toroidal magnetic field-dominated magnetized star.
机译：我们已经分析了磁化的平衡态，并使用解析方法显示了扁长和以环形磁场为主的恒星出现的条件。观测和数值稳定性分析均支持磁化星具有扁长且较大的内部环形磁场。在这种情况下，已经进行了许多有关磁化平衡态的研究，以获得扁长态和环型主解，但其中许多失败了。由于洛伦兹力是电流密度和磁场的叉积，因此恒星的扁长形状和大环形磁场要求电流密度和洛伦兹力之间存在特殊关系。我们分析了简单的分析解决方案，发现扁长体和环形主导结构要求非自由力的环形电流密度，该电流相对于恒星内部的大电流以相反的方向流动。这样的电流密度导致洛伦兹力，该力使恒星形状呈扁长形。满足电流密度和洛伦兹力之间的这种特殊关系是长圆形和以环形磁场为主的磁​​化恒星出现的关键。

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