Contribution of Secondary Neutrinos from Line-of-sight Cosmic Ray Interactions to the IceCube Diffuse Astrophysical Flux

Abstract

In ten years of observations, the IceCube neutrino observatory has revealed a neutrino sky in tension with previous expectations for neutrino point source emissions. Astrophysical objects associated with hadronic processes might act as production sites for neutrinos, observed as point sources at Earth. Instead, a nearly isotropic flux of astrophysical neutrinos is observed up to PeV energies, prompting a reassessment of the assumed transport and production physics. This work applies a new physical explanation for neutrino production from populations of active galactic nuclei (AGN) and starburst galaxies to three years of public IceCube point source data. Specifically, cosmic rays (CRs) produced at such sources might interact with extragalactic background light and gas along the line of sight, generating a secondary neutrino flux. This model is tested alongside a number of typical flux weighting schemes, in all cases the all-sky flux contribution being constrained to percent levels of the reported IceCube diffuse astrophysical flux.

arXiv comment12 pages, 6 figures, 1 table, as accepted to ApJ

References in corpus (44)

• Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
• Neutrino emission from the direction of the blazar TXS 0506+056 prior to the IceCube-170922A alert
• Evidence for strong extragalactic magnetic fields from Fermi observations of TeV blazars
• The IceCube Neutrino Observatory: Instrumentation and Online Systems
• A combined maximum-likelihood analysis of the high-energy astrophysical neutrino flux measured with IceCube
• Time-integrated Neutrino Source Searches with 10 years of IceCube Data
• Particle Acceleration in Relativistic Magnetized Collisionless Electron-Ion Shocks
• The Maximum Energy of Accelerated Particles in Relativistic Collisionless Shocks
• The Fourth Catalog of Active Galactic Nuclei Detected by the Fermi Large Area Telescope
• All-sky search for time-integrated neutrino emission from astrophysical sources with 7 years of IceCube data
• Characteristics of the diffuse astrophysical electron and tau neutrino flux with six years of IceCube high energy cascade data
• The contribution of Fermi-2LAC blazars to the diffuse TeV-PeV neutrino flux
• Blazars as Ultra-High-Energy Cosmic-Ray Sources: Implications for TeV Gamma-Ray Observations
• Time Delay of Cascade Radiation for TeV Blazars and the Measurement of the Intergalactic Magnetic Field
• Constraining High-Energy Cosmic Neutrino Sources: Implications and Prospects
• Evidence for Gamma-Ray Halos Around Active Galactic Nuclei and the First Measurement of Intergalactic Magnetic Fields
• A new interpretation of the gamma-ray observations of active galactic nuclei
• Determination of intergalactic magnetic fields from gamma ray data
• Role of line-of-sight cosmic ray interactions in forming the spectra of distant blazars in TeV gamma rays and high-energy neutrinos
• Secondary photons and neutrinos from cosmic rays produced by distant blazars
• Evidence for GeV Pair Halos around Low Redshift Blazars
• PeV neutrinos from intergalactic interactions of cosmic rays emitted by active galactic nuclei
• Search for steady point-like sources in the astrophysical muon neutrino flux with 8 years of IceCube data
• Astrophysical Sources of High Energy Neutrinos in the IceCube Era
• Acceleration of ultrahigh-energy cosmic rays in starburst superwinds
• Starburst galaxies strike back: a multi-messenger analysis with Fermi-LAT and IceCube data
• TeV gamma rays from blazars beyond z=1?
• Lower limits on ultrahigh-energy cosmic ray and jet powers of TeV blazars
• Active Galactic Nuclei and the Origin of IceCube's Diffuse Neutrino Flux
• Star-Forming Galaxies Significantly Contribute to the Isotropic Gamma-Ray Background
• On weak redshift dependence of gamma-ray spectra of distant blazars
• Extragalactic Magnetic Field and the Highest Energy Cosmic Rays
• Complementarity of Stacking and Multiplet Constraints on the Blazar Contribution to the Cumulative High-Energy Neutrino Intensity
• Revisiting AGN as the Source of IceCube's Diffuse Neutrino Flux
• Time structure of gamma-ray signals generated in line-of-sight interactions of cosmic rays from distant blazars
• Galaxies Correlating with Ultra-high Energy Cosmic Rays
• Are starburst galaxies a common source of high energy neutrinos and cosmic rays?
• Using High-Energy Neutrinos As Cosmic Magnetometers
• Ultrahigh-energy cosmic ray interactions as the origin of very high energy $\gamma -$rays from BL Lacs
• Understanding the spectrum of a distant blazar PKS 1424+240 and its implications
• HESS J1943+213: An Extreme Blazar Shining Through The Galactic Plane
• Prospects for future very high-energy gamma-ray sky survey: impact of secondary gamma rays
• Gamma-ray counterparts of 2WHSP high-synchrotron-peaked BL Lac objects as possible signatures of ultra-high-energy cosmic-ray emission
• Cherenkov telescope array extragalactic survey discovery potential and the impact of axion-like particles and secondary gamma rays

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