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arXiv 0806.3616astro-ph
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来自大质量双星系统的高能γ射线

High energy gamma-rays from massive binary systems

W. Bednarek

摘要:

在过去的几年里,在TeV的伽马射线中发现了一些大质量的双星系统。这种伽马射线发射明显地受到这些双星的轨道周期的调制,这表明它的起源是在双星系统内。在本文中,我们总结了各向异性IC e-p对级联模型作为可能的解释这些意见。我们考虑的情况下,粒子被加速到相对论能量,无论是由于存在一个充满活力的脉冲星内的二进制,或作为吸积过程的结果到紧凑的对象,在此期间,从内部发射的吸积盘,或在碰撞的恒星风从大质量的同伴。

英文摘要:

During last years a few massive binary systems have been detected in the TeV gamma-rays. This gamma-ray emission is clearly modulated with the orbital periods of these binaries suggesting its origin inside the binary system. In this paper we summarize the anisotropic IC e-p pair cascade model as likely explanation of these observations. We consider scenarios in which particles are accelerated to relativistic energies, either due to the presence of an energetic pulsar inside the binary, or as a result of accretion process onto the compact object during which the jet is launched from the inner part of the accretion disk, or in collisions of stellar winds from the massive companions.

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