论文标题

X射线二进制喷气机中的高能宇宙射线生产

High-energy Cosmic Ray production in X-ray Binary Jets

论文作者

Cooper, A. J., Gaggero, D., Markoff, S., Zhang, S.

论文摘要

由于活性银河核(AGN)的较小类似物,X射线二进制(XRB)也能够发射将颗粒加速至高能的喷气机。在这项工作中,我们重新检查XRB喷气机作为高能量宇宙射线(CRS)的潜在来源,并探索它们是否可以为CR光谱提供重要的第二个银河系成分。在最有趣的情况下,XRB-CR可以在$ \ sim 3 \ sim 3 \ times 10^{15} $ eV处主导所谓的“膝盖”功能上方观察到的光谱,从而在从银河系到外层面CRS的过渡区域中为这个过渡区域中的几个关键问题提供了解释。我们讨论如何通过对XRB喷气机的多通信体观察以及弥散的银河中微子通量测量值来探测这种情况。

As smaller analogs of Active Galactic Nuclei (AGN), X-ray Binaries (XRBs) are also capable of launching jets that accelerate particles to high energies. In this work, we reexamine XRB jets as potential sources of high-energy cosmic rays (CRs) and explore whether they could provide a significant second Galactic component to the CR spectrum. In the most intriguing scenario, XRB-CRs could dominate the observed spectrum above the so-called "knee" feature at $\sim 3 \times 10^{15}$ eV, offering an explanation for several key issues in this transition zone from Galactic to extragalactic CRs. We discuss how such a scenario could be probed in the near future via multi-messenger observations of XRB jets, as well as diffuse Galactic neutrino flux measurements.

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