On the Origin of High-Energy Cosmic Neutrinos

Abstract

Recently, the IceCube collaboration made a big announcement of the first discovery of high-energy cosmic neutrinos. Their origin is a new interesting mystery in astroparticle physics. The present multimessenger data may give us hints of connection to cosmic-ray and/or gamma-ray sources. We look over possible scenarios for the cosmic neutrino signal, and emphasize the importance of multimessenger approaches in identifying the PeV neutrino sources and obtaining crucial clues to the cosmic-ray origin. We also discuss some possibilities to study neutrino properties and probe new physics.

12 pages, 6 figures, based on an invited talk given at the "XXVI International Conference on Neutrino Physics and Astrophysics (Neutrino 2014)", June 2-7, 2014, Boston, USA. To appear in AIP conference proceedings. Figure 2 updated in v2

References in corpus (23)

• Evidence for High-Energy Extraterrestrial Neutrinos at the IceCube Detector
• Observation of High-Energy Astrophysical Neutrinos in Three Years of IceCube Data
• The COS-Halos Survey: Physical Conditions and Baryonic Mass in the Low-Redshift Circumgalactic Medium
• The Spectrum of the Isotropic Diffuse Gamma-Ray Emission Derived From First-Year Fermi Large Area Telescope Data
• Diffuse Neutrino Intensity from the Inner Jets of Active Galactic Nuclei: Impacts of External Photon Fields and the Blazar Sequence
• The Fermi Bubbles: Giant, Multi-Billion-Year-Old Reservoirs of Galactic Center Cosmic Rays
• Star-forming galaxies as the origin of diffuse high-energy backgrounds: Gamma-ray and neutrino connections, and implications for starburst history
• Cosmic neutrino cascades from secret neutrino interactions
• High energy neutrino early afterglows from gamma-ray bursts revisited
• Neutrino Decays over Cosmological Distances and the Implications for Neutrino Telescopes
• High-energy Cosmic Rays and Neutrinos from Semi-relativistic Hypernovae
• Constraining Very Heavy Dark Matter Using Diffuse Backgrounds of Neutrinos and Cascaded Gamma Rays
• A Galactic Halo Origin of the Neutrinos Detected by IceCube
• Neutrino Spectra from Low and High Luminosity Populations of Gamma Ray Bursts
• Gamma-Ray and Neutrino Backgrounds as Probes of the High-Energy Universe: Hints of Cascades, General Constraints, and Implications for TeV Searches
• Reconciling neutrino flux from heavy dark matter decay and recent events at IceCube
• Cosmogenic neutrinos as a probe of the transition from Galactic to extragalactic cosmic rays
• CνB absorption line in the neutrino spectrum at IceCube
• Propagation of Superluminal PeV IceCube Neutrinos: A High Energy Spectral Cutoff or New Constraints on Lorentz Invariance Violation
• Galaxy Mergers as a Source of Cosmic Rays, Neutrinos, and Gamma Rays
• Neutrino Lighthouse at Sagittarius A*
• Gamma rays and neutrinos from a cosmic ray source in the Galactic Center region
• Large Scale Anisotropy of Cosmic Rays and Directional Neutrino Signals from Galactic Sources

Cited by in corpus (36)

• Hidden Cosmic-Ray Accelerators as an Origin of TeV-PeV Cosmic Neutrinos
• Choked Jets and Low-Luminosity Gamma-Ray Bursts as Hidden Neutrino Sources
• Theoretically palatable flavor combinations of astrophysical neutrinos
• Probing BSM Neutrino Physics with Flavor and Spectral Distortions: Prospects for Future High-Energy Neutrino Telescopes
• Testing decay of astrophysical neutrinos with incomplete information
• First all-flavour Neutrino Point-like Source Search with the ANTARES Neutrino Telescope
• Can tidal disruption events produce the IceCube neutrinos?
• Astrophysical Sources of High Energy Neutrinos in the IceCube Era
• MeV scale leptonic force for cosmic neutrino spectrum and muon anomalous magnetic moment
• A Possible Two-component Flux for the High Energy Neutrino Events at IceCube
• Type IIn supernovae as sources of high energy astrophysical neutrinos
• Decaying Leptophilic Dark Matter at IceCube
• Astrophysical neutrinos flavored with Beyond the Standard Model physics
• Heavy right-handed neutrino dark matter and PeV neutrinos at IceCube
• Analysis of the 4-year IceCube high-energy starting events
• A Combined Astrophysical and Dark Matter Interpretation of the IceCube HESE and Throughgoing Muon Events
• Update on decaying and annihilating heavy dark matter with the 6-year IceCube HESE data
• Star-Forming Galaxies Significantly Contribute to the Isotropic Gamma-Ray Background
• A consistent model for leptogenesis, dark matter and the IceCube signal
• A Consistent Theory of Decaying Dark Matter Connecting IceCube to the Sesame Street
• Constraints on Minute-Scale Transient Astrophysical Neutrino Sources
• Boosted Dark Matter and its implications for the features in IceCube HESE data
• Identifying Ultrahigh-Energy Cosmic-Ray Accelerators with Future Ultrahigh-Energy Neutrino Detectors
• Revisiting the Contributions of Supernova and Hypernova Remnants to the Diffuse High-Energy Backgrounds: Constraints on Very-High-Redshift Injections
• Do high energy astrophysical neutrinos trace star formation?
• Prospects of type-II seesaw at future colliders in light of the DAMPE $e^{+}{e}^{-}$ excess
• Search for Spatial Correlations of Neutrinos with Ultra-High-Energy Cosmic Rays
• PeV IceCube signals and Dark Matter relic abundance in modified cosmologies
• Cosmogenic neutrino fluxes under the effect of active-sterile secret interactions
• Observable features in (ultra)high energy neutrinos due to active-sterile secret interactions
• Cutoff of IceCube Neutrino Spectrum due to t-channel Resonant Absorption by C$\nu$B
• A Search for Cosmic Neutrino and Gamma-Ray Emitting Transients in 7.3 Years of ANTARES and Fermi LAT Data
• Early Decay of Peccei-Quinn Fermion and the IceCube Neutrino Events
• Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay
• Phenomenology of Colored Radiative Neutrino Mass Model and Its Implications on the Cosmic-ray Observations
• Explanation of IceCube spectrum with $\nu \to 3\nu$ neutrino splitting in a $\nu$2HDM model