Soft gamma rays from low accreting supermassive black holes and connection to energetic neutrinos

  title={Soft gamma rays from low accreting supermassive black holes and connection to energetic neutrinos},
  author={Shigeo S Kimura and Kohta Murase and P{\'e}ter M{\'e}sz{\'a}ros},
  journal={Nature Communications},
The Universe is filled with a diffuse background of MeV gamma-rays and PeV neutrinos, whose origins are unknown. Here, we propose a scenario that can account for both backgrounds simultaneously. Low-luminosity active galactic nuclei have hot accretion flows where thermal electrons naturally emit soft gamma rays via Comptonization of their synchrotron photons. Protons there can be accelerated via turbulence or reconnection, producing high-energy neutrinos via hadronic interactions. We… Expand

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