标题： 物质吸积在天体喷流中的辐射：活动星系核的情况 显示英文标题

标题： Radiation from matter entrainment in astrophysical jets: the AGN case

摘要： 喷流出现在各种天体物理源中，从年轻的恒星物体到活动星系核。 在所有情况下，喷流以超音速通过外部介质传播，该介质可能是不均匀的，不均匀性可能渗透到喷流中。 喷流物质与障碍物的相互作用会在喷流中产生弓形激波，在其中粒子可以被加速到相对论能量并发射高能光子。 在本研究中，我们探讨了活动星系核的情景，重点研究不同喷流高度处相互作用的动力学和辐射后果。 我们发现所产生的高能辐射可能被当前的伽马射线望远镜探测到。 一般来说，喷流-团块相互作用是许多存在喷流的天体物理源中产生（稳定或爆发）高能辐射的一种可能机制。 显示英文摘要

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.