High-energy Cosmic Ray production in X-ray Binary Jets. (arXiv:2002.01477v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Cooper_A/0/1/0/all/0/1">A. J. Cooper</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gaggero_D/0/1/0/all/0/1">D. Gaggero</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Markoff_S/0/1/0/all/0/1">S. Markoff</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Zhang_S/0/1/0/all/0/1">S. Zhang</a>
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.
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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