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

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...

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Detalles Bibliográficos
Autores principales: Biehl, Daniel, Boncioli, Denise, Lunardini, Cecilia, Winter, Walter
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6050258/
https://www.ncbi.nlm.nih.gov/pubmed/30018410
http://dx.doi.org/10.1038/s41598-018-29022-4
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author Biehl, Daniel
Boncioli, Denise
Lunardini, Cecilia
Winter, Walter
author_facet Biehl, Daniel
Boncioli, Denise
Lunardini, Cecilia
Winter, Walter
author_sort Biehl, Daniel
collection PubMed
description 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.
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spelling pubmed-60502582018-07-19 Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies Biehl, Daniel Boncioli, Denise Lunardini, Cecilia Winter, Walter Sci Rep Article 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. Nature Publishing Group UK 2018-07-17 /pmc/articles/PMC6050258/ /pubmed/30018410 http://dx.doi.org/10.1038/s41598-018-29022-4 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Biehl, Daniel
Boncioli, Denise
Lunardini, Cecilia
Winter, Walter
Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
title Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
title_full Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
title_fullStr Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
title_full_unstemmed Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
title_short Tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
title_sort tidally disrupted stars as a possible origin of both cosmic rays and neutrinos at the highest energies
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6050258/
https://www.ncbi.nlm.nih.gov/pubmed/30018410
http://dx.doi.org/10.1038/s41598-018-29022-4
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