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arXiv 2103.16423astro-ph.HEastro-ph.GAastro-ph.IM
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γ射线作为星系中cosmic-ray传播和相互作用的探针

Gamma rays as probes of cosmic-ray propagation and interactions in galaxies

Luigi Tibaldo, Daniele Gaggero, Pierrick Martin

摘要:

由宇宙射线与星际物质和辐射场相互作用产生的连续γ射线辐射是研究星系中非热粒子布居的一个重要手段。经过几十年来实验技术的不断改进以及天空和能量覆盖范围的不断扩大,伽马射线观测以前所未有的细节揭示了银河系宇宙射线的性质。我们现在可以接触到各种尺度和环境,从太阳附近的本地星际介质和宇宙射线加速器附近,到银河系以及更远的地方,越来越多的伽马射线发射恒星形成星系。伽马射线观测一直在推进我们对星系中宇宙射线生命周期的理解,与相关领域的进展相结合,它们一直在挑战该领域的标准假设,并刺激了建模方法和数据分析方法的新发展。我们提供了一个审查的主题的地位,并讨论未来的进展前景。

英文摘要:

Continuum gamma-ray emission produced by interactions of cosmic rays with interstellar matter and radiation fields is a probe of non-thermal particle populations in galaxies. After decades of continuous improvements in experimental techniques and an ever-increasing sky and energy coverage, gamma-ray observations reveal in unprecedented detail the properties of galactic cosmic rays. A variety of scales and environments are now accessible to us, from the local interstellar medium near the Sun and the vicinity of cosmic-ray accelerators, out to the Milky Way at large and beyond, with a growing number of gamma-ray emitting star-forming galaxies. Gamma-ray observations have been pushing forward our understanding of the life cycle of cosmic rays in galaxies and, combined with advances in related domains, they have been challenging standard assumptions in the field and have spurred new developments in modelling approaches and data analysis methods. We provide a review of the status of the subject and discuss perspectives on future progress.

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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