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arXiv 1012.0915astro-ph.HE
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天体物理喷流中物质卷吸的辐射:AGN情况

Radiation from matter entrainment in astrophysical jets: the AGN case

Anabella T. Araudo, Valenti Bosch-Ramon, Gustavo E. Romero

摘要:

喷流存在于各种天体物理来源中,从年轻的恒星到活动星系核。在所有情况下,射流以超音速传播通过外部介质,该外部介质可以是不均匀的,并且不均匀性可以渗透到射流中。射流物质与障碍物的相互作用在射流中产生弓形激波,其中粒子可以被加速到相对论能量并发射高能光子。在这项工作中,我们探讨了活动星系核的情况下,专注于在不同的喷流高度的相互作用的动力学和辐射的后果。我们发现产生的高能辐射可以被目前的伽马射线望远镜探测到。一般来说,喷流-团簇相互作用是许多存在喷流的天体物理源产生(稳定或闪耀)高能辐射的可能机制。

英文摘要:

Jets are found in a variety of astrophysical sources, from young stellar objects to active galactic nuclei. In all the cases the jet propagates with a supersonic velocity through the external medium, which can be inhomogeneous, and inhomogeneities could penetrate into the jet. The interaction of the jet material with an obstacle produces a bow shock in the jet in which particles can be accelerated up to relativistic energies and emit high-energy photons. In this work, we explore the active galactic nuclei scenario, focusing on the dynamical and radiative consequences of the interaction at different jet heights. We find that the produced high-energy emission could be detectable by the current gamma-ray telescopes. In general, the jet-clump interactions are a possible mechanism to produce (steady or flaring) high-energy emission in many astrophysical sources in which jets are present.

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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