English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

The origin of the diffuse astrophysical neutrino flux observed by the IceCubeexperiment is still under debate. In recent years there have been associationsof neutrino events with individual blazars, which are active galaxies withrelativistic jets pointing toward Earth, such as the source TXS 0506+056. Froma theoretical perspective, the properties of these sources as neutrino emittersare not yet well understood. In this work we model a sample of 324 blazarsdetected by the Fermi Large Area Telescope (LAT), most of which areflat-spectrum radio quasars (FSRQs). This amounts to 34% of all FSRQs in thelatest Fermi catalog. By numerically modelling the interactions of cosmic-rayelectrons and protons, we explain the emitted multi-wavelength fluxes from eachsource and self-consistently predict the emitted neutrino spectrum. Wedemonstrate that the optical and GeV gamma-ray broadband features are generallywell described by electron emission. For 33% of the blazars in our sample, adescription of the observed X-ray spectrum benefits from an additionalcomponent from proton interactions, in agreement with recent studies ofindividual IceCube candidate blazars. We conclude that blazars that arebrighter in GeV gamma rays tend to have a higher neutrino production efficiencybut a lower best-fit baryonic loading. The predicted neutrino luminosity showsa positive correlation with the observed GeV gamma-ray flux and with thepredicted MeV gamma-ray flux. By extrapolating the results for this sample, weshow that the diffuse neutrino flux from the population of gamma-ray-brightblazars may be at the level of about 20% of the IceCube flux, in agreement withcurrent limits from stacking analyses. We discuss the implications of ourresults for future neutrino searches and suggest promising sources forpotential detections with future experiments.

Leptohadronic Multimessenger Modeling of 324 Gamma-Ray Blazars