A Particle Simulation for the Pulsar Magnetosphere: Relationship of Polar Cap, Slot Gap, and Outer Gap
A Particle Simulation for the Pulsar Magnetosphere: Relationship of Polar Cap, Slot Gap, and Outer Gap
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DOI：
10.1093/pasj/64.3.43
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发表时间：
2012-06
影响因子：
2.3
通讯作者：
Yuki Shinya;Shibata Shinpei
中科院分区：
文献类型：
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作者：
Yuki Shinya;Shibata Shinpei
为了解释旋转供能星从射电到γ射线的脉冲发射，提出了极帽模型、缝隙隙模型和外隙模型。最近的观测表明，这些模型很可能在同一个磁层中共存。如果是这样的话，它们的相互关系是已知的麻烦（哈丁2009年），由于边界条件和方向的电流，这是适当地假设在每个加速度模型。我们对全球磁层结构进行了粒子模拟。在此基础上，我们给出了脉冲星磁层全球结构的新图像。研究发现，沿沿着分隔反向电流的电流中性线形成新的死区。我们称之为电流中性区。我们认为，极帽加速器和槽隙位于电流中性区的上方，外部间隙位于电流中性区和传统死区之间。我们也给出了超旋转区域的估计。
To explain the pulsed emission of the rotation powered pulsars from radio to gamma-ray, the polar cap models, the slot gap models, and the outer gap models are proposed. The recent observations suggest that these models are likely to co-exist in the same magnetosphere. If so, their mutual relation is known to be troublesome (Harding 2009) due to the boundary conditions and the direction of the current which are properly assumed in each acceleration models. We performed a particle simulation for the global magnetospheric structure. Based on the simulation, we present a new picture of the global structure of the pulsar magnetosphere. It is found that a new dead zone is formed along the current neutral line which separates the oppositely directed current. We shall call this the current- neutral zone. We suggest that the polar cap accelerators and the slot gaps locate above the current-neutral zone, and the outer gap exist between the current neutral zone and the traditional dead zone. We also give an estimate of the super-rotation region.