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Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies.

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 is developed by photo-hadronic interactions.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Biehl D,Boncioli D,Lunardini C,Winter W

doi

10.1038/s41598-018-29022-4

subject

Has Abstract

pub_date

2018-07-17 00:00:00

pages

10828

issue

1

issn

2045-2322

pii

10.1038/s41598-018-29022-4

journal_volume

8

pub_type

杂志文章

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