Secondary neutrino and gamma-ray fluxes from SimProp and CRPropa

Autor: Arjen van Vliet, Rafael Alves Batista, Denise Boncioli, Armando di Matteo
Jazyk: angličtina
Rok vydání: 2019
Předmět:
electron
Photon
Astronomy
Astrophysics::High Energy Astrophysical Phenomena
Monte Carlo method
UHE [cosmic radiation]
FOS: Physical sciences
background [photon]
Cosmic ray
ultra high energy cosmic rays
Astrophysics::Cosmology and Extragalactic Astrophysics
7. Clean energy
01 natural sciences
Nuclear physics
Positron
propagation
0103 physical sciences
flux [gamma ray]
ddc:530
cosmic radiation: UHE
gamma ray: flux
spectrum [cosmic radiation]
photon: flux
Monte Carlo
High Energy Astrophysical Phenomena (astro-ph.HE)
flux [photon]
Physics
secondary [neutrino]
cosmic radiation: spectrum
ultra high energy photons and neutrinos
cross section
010308 nuclear & particles physics
Gamma ray
Astrophysics::Instrumentation and Methods for Astrophysics
Astronomy and Astrophysics
Extragalactic background light
Photodisintegration
neutrino: secondary
positron
photon: background
Neutrino
Astrophysics - High Energy Astrophysical Phenomena
Zdroj: Journal of Cosmology and Astroparticle Physics, 2019, 5, pp. 1-27
Journal of Cosmology and Astroparticle Physics
Journal of cosmology and astroparticle physics 1905(05), 006 (2019). doi:10.1088/1475-7516/2019/05/006
Journal of Cosmology and Astroparticle Physics, 2019, 1-27
ISSN: 1475-7516
0021-3640
0004-637X
2041-8205
0067-0049
DOI: 10.3204/PUBDB-2019-02668
Popis: Journal of cosmology and astroparticle physics 1905(05), 006 (2019). doi:10.1088/1475-7516/2019/05/006
The interactions of ultra-high energy cosmic rays (UHECRs) with background photons in extragalactic space generate high-energy neutrinos and photons. Simulating UHECR propagation requires assumptions about physical quantities such as the spectrum of the extragalactic background light (EBL) and photodisintegration cross sections. These assumptions, as well as the approximations used in the codes, may influence the computed predictions both of cosmic-ray spectra and composition, and of cosmogenic neutrino and photon fluxes. Following up on our previous work where we studied the resulting uncertainties on cosmic-ray simulations, here we quantify those on neutrinos and photons, using the Monte Carlo codes CRPropa and SimProp in various source scenarios. We discuss the results in the light of the constraining power of the neutrino and photon spectra on the origin of the UHECRs. We show that cosmogenic neutrino fluxes are more sensitive to the parametrization of the EBL than UHECR spectra, whereas the overall cosmogenic gamma-ray production rates are relatively independent on details of the propagation. We also find large differences between neutrino fluxes predicted by the latest released versions of CRPropa and SimProp, and discuss their causes and possible improvements in future versions of the codes.
Published by IOP, London
Databáze: OpenAIRE
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