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arXiv 0807.1969astro-ph
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黑体光子场中逆康普顿过程电子辐射功率的近似计算

Approximation for radiation power of electrons due to inverse-Compton process in the black-body photon field

O. Petruk

摘要:

本文提出了各向同性黑体光子场中电子的逆康普顿辐射功率的近似计算方法。近似允许一个计算逆康普顿发射率作为积分的入射电子的能量,而不是超过场光子能量。这种方法允许在CPU资源有限的情况下,对具有不同于幂律的能谱的电子的IC发射进行精确建模。这种近似的高精度允许人们在广泛的条件下使用它,从汤姆逊到极端的克莱因-西那极限。该方法采用的结果也在一些新的解析表达式代表已知的结果在汤姆逊极限。

英文摘要:

An approximation for the inverse-Compton radiation power of electrons in the isotropic black-body photon field is presented. The approximation allows one to calculate inverse-Compton emissivity as integral over the energies of incident electrons rather than over the field photon energies. Such an approach allows for accurate modeling of IC emission of electrons with energy spectra being different from power-law, in situation where the CPU resources are limited. High accuracy of this approximation allows one to use it in a wide range of conditions, from Thomson to extreme Klein-Nishina limits. The approach adopted results also in some new analytic expressions representing known results in the Thomson limit.

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