Problems in High Energy Astrophysics

Abstract

This contribution discusses some of the main problems in high energy astrophysics, and the perspectives to solve them using different types of "messengers": cosmic rays, photons and neutrinos

Talk given at the workshop "Neutrino Oscillations in Venice" (april 2008)

References in corpus (25)

• Correlation of the highest energy cosmic rays with nearby extragalactic objects
• First Observation of the Greisen-Zatsepin-Kuzmin Suppression
• KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems
• High-energy particle acceleration in the shell of a supernova remnant
• Correlation of the highest-energy cosmic rays with the positions of nearby active galactic nuclei
• Primary particle acceleration above 100 TeV in the shell-type Supernova Remnant RX J1713.7-3946 with deep H.E.S.S. observations
• The all-particle spectrum of primary cosmic rays in the wide energy range from 10^14 eV to 10^17 eV observed with the Tibet-III air-shower array
• Benchmarks for the Forward Observables at RHIC, the Tevatron-run II and the LHC
• Dip in UHECR spectrum as signature of proton interaction with CMB
• Measurement of the Cosmic Ray Energy Spectrum and Composition from 10^{17} to 10^{18.3} eV Using a Hybrid Fluorescence Technique
• Search for Correlations between HiRes Stereo Events and Active Galactic Nuclei
• On the generation of UHECRs in GRBs: a reappraisal
• Cosmic Rays: Recent Progress and some Current Questions
• Neutrinos from galactic sources of cosmic rays with known gamma-ray spectra
• Study of the Cosmic Ray Composition above 0.4 EeV using the Longitudinal Profiles of Showers observed at the Pierre Auger Observatory
• A theory of Cosmic Rays
• Proton-proton Cross Section at sqrt(s) \sim 30 TeV
• Measurement of the UHECR energy spectrum using data from the Surface Detector of the Pierre Auger Observatory
• Perspectives of High Energy Neutrino Astronomy
• On the interpretation of the cosmic-ray anisotropy at ultra-high energies
• On Gamma Ray Burst and Blazar AGN Origins of the Ultra-High Energy Cosmic Rays in Light of First Results from Auger
• A search for Extragalactic Sources of Ultrahigh-Energy Cosmic Rays
• Correlation of the HIghest Energy Cosmic Rays with the Supergalactic Plane
• A solution of a hoary conundrum: the origin and properties of cosmic rays
• The vicissitudes of "cannonballs": a response to criticisms by A.M. Hillas and a brief review of our claims