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Current Sheet as an Optimal Synchrotron Maser on a Radio Pulsar
Astronomy Letters ( IF 0.9 ) Pub Date : 2024-03-22 , DOI: 10.1134/s1063773723120046
S. A. Koryagin

Abstract

Using a relativistic plasma with an isotropic monoenergetic distribution of electrons and positrons as an example, we show that in the maser regime the maximum possible amplification of synchrotron radiation at a distance of one wavelength is achieved in a medium where the magnetic energy density is of the order of the particle energy density. This ratio of the energy densities corresponds to a (Harris-type) current sheet. We have obtained an electron Lorentz factor of 350 and a magnetic field strength of 10 kG in the maser radio emission region for the Crab pulsar. Our estimate suggests that the optical and coherent radio emissions of the object originate from one synchrotron source in the form of a current sheet. The diameter of the source must exceed the light-cylinder radius approximately by a factor of 6 for the maser wave field to interact with particles in the linear regime, in particular, to keep its phase velocity higher than the speed of light in a vacuum—a necessary condition for the synchrotron instability.



中文翻译:

当前表作为射电脉冲星上的最佳同步加速器脉泽

摘要

以电子和正电子各向同性单能分布的相对论等离子体为例,我们表明,在微波激射区,在磁能密度为粒子能量密度的顺序。该能量密度比对应于(哈里斯型)电流片。我们获得了蟹状脉冲星微波激射射电发射区的电子洛伦兹因子为350,磁场强度为10 kG。我们的估计表明,该物体的光学和相干无线电发射源自电流片形式的一个同步加速器源。源的直径必须超过光柱半径约 6 倍,微波激射波场才能与线性区域中的粒子相互作用,特别是要保持其相速度高于真空中的光速 -同步加速器不稳定性的必要条件。

更新日期:2024-03-22
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