论文标题
关于沿着活性银核的射流轴的辐射发射过程的相对重要性
On the relative importance of hadronic emission processes along the jet axis of Active Galactic Nuclei
论文作者
论文摘要
随着伽马射线耀斑的一致检测和来自Blazar TXS 0506+056的中微子，活跃的银河核（AGN）已被焦点放在弥漫性中微子中微子通量的可能来源中。我们提出了一个假定沿相对速度沿AGN射流轴的浆液的高能颗粒发射的空间和时间分辨模型。这是通过修改公开可用的CRPROPA（版本3.1+）传播框架来实现的，在我们的工作中，该框架能够通过子KPC量表应用于源物理。原代质子种群的传播是在纯粹的湍流磁场中建模的，我们考虑了这些质子与从增生盘散射的光子的相互作用，由环境相对论电子发出的同步辐射，以及与自己以及其他环境物质。我们的模型产生的PEV-Neutrino耀斑主要是由原始与积聚盘场的光 - 辐射相互作用引起的。次级高能量伽玛射线部分通过环境光子场的一部分减弱，其组合的光学深度可实现其对10 TEV左右的光子的最小不透明度。因此，我们的模型能够很好地产生中微子耀斑，并具有明显减少带有HADRONIC JET成分的喷气机中伽马射线的发射，这将来可以适合特定的AGN耀斑场景。
With the coincident detection of a gamma-ray flare and a neutrino from the blazar TXS 0506+056, Active Galactic Nuclei (AGN) have been put into focus as possible sources of the diffuse neutrino flux. We present a space and time-resolved model of the high-energy particle emission of a plasmoid assumed to travel along the axis of an AGN jet at relativistic speed. This was achieved by modifying the publicly available CRPropa (version 3.1+) propagation framework which in our work is capable of being applied to source physics on sub-kpc scales. The propagation of a population of primary protons is modelled in a purely turbulent magnetic field and we take into account interactions of these protons with photons scattered from the accretion disc, synchrotron radiation emitted by ambient relativistic electrons, as well with themselves and with other ambient matter. Our model produces a PeV-neutrino flare caused mainly by photo-hadronic interactions of primaries with the accretion disc field. Secondary high-energy gamma-rays partly attenuate with the ambient photon fields whose combined optical depths achieve their minimal opacity for photons of around 10 TeV. Thus, our model is well capable of producing neutrino flares with a significantly reduced emission of gamma-rays in jets with a hadronic jet component which in the future can be fit to specific AGN flare scenarios.
