Rotating neutron stars without light cylinders
Rotating neutron stars without light cylinders
复制标题
没有光柱的旋转中子星
DOI：
10.1093/mnras/stac868
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发表时间：
2022
影响因子：
4.8
通讯作者：
Sharma, Praveen
中科院分区：
文献类型：
--
作者：
Lyutikov, Maxim;Sharma, Praveen
我们发现了一类扭曲的和差异旋转的中子星星磁层，没有光柱，不产生风，因此不自旋。磁层由嵌入的差动旋转通量表面组成，角速度以Ω <$1/r的速度减小（相当于在更靠近旋转轴的脚点处变小）。对于每个给定的南北自相似扭曲轮廓，存在一组自相似角速度轮廓（从上面限制），其具有延伸到无穷远的“平滑”的偶极状磁场结构。当自旋参数大于某个临界值时，轻圆柱出现，磁层打开，风产生。
We find a class of twisted and differentially rotating neutron star magnetospheres that do not have a light cylinder, generate no wind, and thus do not spin-down. The magnetosphere is composed of embedded differentially rotating flux surfaces, with the angular velocity decreasing as Ω ∝ 1/r(equivalently, becoming smaller at the foot-points closer to the axis of rotation). For each given North–South self-similar twist profile there is a set of self-similar angular velocity profiles (limited from above) with a ‘smooth’, dipolar-like magnetic field structure extending to infinity. For spin parameters larger than some critical value, the light cylinder appears, magnetosphere opens up, and the wind is generated.