Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
arXiv:1711.03555 · doi:10.1038/s41598-018-29022-4
Abstract
Tidal Disruption Events (TDEs) are processes where stars are torn apart by the strong gravitational force near to a massive or supermassive black hole. If a jet is launched in such a process, particle acceleration may take place in internal shocks. We demonstrate that jetted TDEs can simultaneously describe the observed neutrino and cosmic ray fluxes at the highest energies if stars with heavier compositions, such as carbon-oxygen white dwarfs, are tidally disrupted and these events are sufficiently abundant. We simulate the photo-hadronic interactions both in the TDE jet and in the propagation through the extragalactic space and we show that the simultaneous description of Ultra-High Energy Cosmic Ray (UHECR) and PeV neutrino data implies that a nuclear cascade in the jet develops by photo-hadronic interactions.
13 pages, 9 figures. An updated version of this manuscript has been published at https://www.nature.com/articles/s41598-018-29022-4 (open access)
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