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arXiv astro-ph/9401034astro-ph
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旋转驱动脉冲星高能辐射的外能隙模型

An Outer Gap Model of High-Energy Emission from Rotation-Powered Pulsars

J. Chiang, R. W. Romani

摘要:

本文根据Cheng,Ho & Ruderman(1986 a,b)的外隙模型,对旋转驱动的类星体的高能辐射进行了精确的计算。我们已经改进了以前的努力,从这些光谱模型(e。G. Cheng,et al. 1986 b; Ho 1989)通过跟踪粒子产生和辐射特性随外隙位置的变化。曲率、同步辐射和逆康普顿散射通量在间隙上显著变化,并且它们的相互作用{ \it via}光子-光子对产生以不同的速率建立辐射电荷群。我们还采用了近似处理的运输间隙发射区之间的粒子和光子通量。这些效应,以及粒子和光子分布的改进计算,提供了非常重要的修改模型的伽马射线通量。特别是,我们试图作出具体的预测脉冲轮廓形状和光谱变化作为脉冲相位的函数,并建议进一步扩展的模型,可以提供准确的计算所观察到的高能量的排放。

英文摘要:

We describe a refined calculation of high energy emission from rotation-powered pulsars based on the Outer Gap model of Cheng, Ho \&~Ruderman (1986a,b). We have improved upon previous efforts to model the spectra from these pulsars (e. g. Cheng, et al. 1986b; Ho 1989) by following the variation in particle production and radiation properties with position in the outer gap. Curvature, synchrotron and inverse-Compton scattering fluxes vary significantly over the gap and their interactions {\it via} photon-photon pair production build up the radiating charge populations at varying rates. We have also incorporated an approximate treatment of the transport of particle and photon fluxes between gap emission zones. These effects, along with improved computations of the particle and photon distributions, provide very important modifications of the model gamma-ray flux. In particular, we attempt to make specific predictions of pulse profile shapes and spectral variations as a function of pulse phase and suggest further extensions to the model which may provide accurate computations of the observed high energy emissions.

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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