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arXiv 1212.1985astro-ph.HE
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银河系Cosmic Ray起源地:超新星遗迹和超级气泡

Galactic Cosmic Ray Origin Sites: Supernova Remnants and Superbubbles

A. M. Bykov, D. C. Ellison, P. E. Gladilin, S. M. Osipov

摘要:

我们讨论的过程中银河宇宙线(GCR)加速网站-超新星遗迹,年轻的大质量恒星的紧凑协会,和超级气泡。讨论了由超新星激波和年轻恒星的快速恒星风驱动的外流的机械能有效转换为磁场和相对论粒子的机制。源中粒子加速的高效率意味着共生关系中非线性反馈效应的重要性,其中加速CR所需的磁湍流是由加速的CR本身产生的。由相对论粒子(包括那些被限制在宇宙加速器中的粒子和那些从宇宙加速器中逃逸的粒子)产生的非热辐射可以用来约束GCR源的基本物理模型。高分辨率X射线同步辐射成像技术与GeV-TeV γ射线能谱相结合,是探测加速粒子最大能量的有力工具。未来的MeV体制光谱学将提供关于加速粒子组成的独特信息。

英文摘要:

We discuss processes in galactic cosmic ray (GCR) acceleration sites - supernova remnants, compact associations of young massive stars, and superbubbles. Mechanisms of efficient conversion of the mechanical power of the outflows driven by supernova shocks and fast stellar winds of young stars into magnetic fields and relativistic particles are discussed. The high efficiency of particle acceleration in the sources implies the importance of nonlinear feedback effects in a symbiotic relationship where the magnetic turbulence required to accelerate the CRs is created by the accelerated CRs themselves. Non-thermal emission produced by relativistic particles (both those confined in and those that escape from the cosmic accelerators) can be used to constrain the basic physical models of the GCR sources. High resolution X-ray synchrotron imaging, combined with GeV-TeV gamma ray spectra, is a powerful tool to probe the maximum energies of accelerated particles. Future MeV regime spectroscopy will provide unique information on the composition of accelerated particles.

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