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arXiv 2602.23850astro-ph.HE
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脉冲星风驱动的磁流管发光

Magnetic Flux Tubes Illuminated by Pulsar Winds

The University of Hong Kong(香港大学);Hong Kong Institute for Astronomy and Astrophysics, The University of Hong Kong(香港大学天文与天体物理研究所);Southwest Jiaotong University(西南交通大学)

Yifan Sun, C. -Y. Ng, Siming Liu

AI总结:

通过磁流管模型解释脉冲星风驱动的高能电子注入星际介质,并应用于脉冲星尾部和丝状结构的辐射研究。

摘要:

观测到连接脉冲星与伽马射线晕的线性结构揭示了高能电子被注入星际介质的过程。在某些情况下,这可能是由于电子沿大尺度磁场运输时几乎不散射,且沿磁场线缓慢扩散所致。在本工作中,我们通过一个从脉冲星发出并连接到星际介质磁场的磁流管来建模这一过程。我们表明,这些粒子具有各向异性磁场pitch角分布,使得整体辐射高度定向。我们将此模型应用于脉冲星尾部和丝状结构,包括与PSR J1740+1000相关的扩展X射线和TeV辐射以及吉他星云中偏移的X射线喷流,以约束其粒子群体和磁场。

英文摘要:

Observations of linear structure connecting pulsars to gamma-ray halos reveal injection of TeV electrons into the interstellar medium (ISM). In some cases, this could be attributed to nearly scattering-free electron transport along large-scale magnetic fields connected to pulsar winds with very slow diffusion across the field lines. In this work we model this process with a magnetic flux tube emerging from the pulsar and attached to the ISM magnetic field. We show that particles in this case have an anisotropic distribution of magnetic pitch angle, such that the overall emission is highly beamed. We apply this model to pulsar tails and filaments, including the extended X-ray and TeV emission associated with PSR J1740+1000 and the misaligned X-ray jet in the Guitar Nebula, to constrain their particle population and magnetic fields.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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