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arXiv 1608.07421astro-ph.HE
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cosmic-ray与环星系气体相互作用的漫射γ射线和中微子通量

Fluxes of diffuse gamma rays and neutrinos from cosmic-ray interactions with circumgalactic gas

Oleg Kalashev, Sergey Troitsky

摘要:

银河系被一个引力束缚的气体日冕所包围,气体日冕一直延伸到银河系的维里半径。宇宙射线粒子与这种气体的相互作用产生了高能次级伽马射线和中微子。我们提出了一个定量分析的中微子和伽马射线通量的日冕的银河系连同其他星系的日冕的综合贡献。高能中微子通量不足以解释冰立方的结果,而对费米-LAT扩散γ射线通量的贡献是不可忽略的。

英文摘要:

The Milky Way is surrounded by a gravitationally bound gas corona extending up to the Galaxy's virial radius. Interactions of cosmic-ray particles with this gas give rise to energetic secondary gamma rays and neutrinos. We present a quantitative analysis of the neutrino and gamma-ray fluxes from the corona of the Milky Way together with a combined contribution of coronae of other galaxies. The high-energy neutrino flux is insufficient to explain the IceCube results, while the contribution to the FERMI-LAT diffuse gamma-ray flux is not negligible.

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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