Multi messenger astronomy and CTA: TeV cosmic rays and electrons

Abstract

Cosmic rays are a sample of solar, galactic and extragalactic matter. Their origin and properties are one of the most intriguing question in modern astrophysics. The most energetic events and active objects in the Universe: supernovae explosion, pulsars, relativistic jets, active galactic nuclei, have been proposed as sources of cosmic rays although unambiguous evidences have still to be found. Electrons, while comprising ~1% of the cosmic radiation, have unique features providing important information regarding the origin and propagation of cosmic rays in the Galaxy that is not accessible from the study of the cosmic-ray nuclear components due to their differing energy-loss processes. In this paper we will analyse, discussing the experimental uncertainties and challenges, the most recent measurements on cosmic-ray nuclei and, in particular, electrons with energies from tens of GeV into the TeV region.

24 pages, 10 figure, to appear in Astroparticle Physics as a special issue on CTA

References in corpus (39)

• Observation of an anomalous positron abundance in the cosmic radiation
• Propagation of cosmic-ray nucleons in the Galaxy
• Measurement of the Cosmic Ray e+ plus e- spectrum from 20 GeV to 1 TeV with the Fermi Large Area Telescope
• Design Concepts for the Cherenkov Telescope Array
• The energy spectrum of cosmic-ray electrons at TeV energies
• Measurement of separate cosmic-ray electron and positron spectra with the Fermi Large Area Telescope
• KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems
• Model-independent implications of the e+, e-, anti-proton cosmic ray spectra on properties of Dark Matter
• High-energy particle acceleration in the shell of a supernova remnant
• Probing the ATIC peak in the cosmic-ray electron spectrum with H.E.S.S
• Parameterization of Gamma, e^+/- and Neutrino Spectra Produced by p-p Interaction in Astronomical Environment
• Fermi LAT observations of cosmic-ray electrons from 7 GeV to 1 TeV
• Cosmic-Ray Proton and Helium Spectra from the First CREAM Flight
• Dissipation of Magnetohydrodynamic Waves on Energetic Particles: Impact on Interstellar Turbulence and Cosmic Ray Transport
• The origin of the positron excess in cosmic rays
• Measurements of Primary and Atmospheric Cosmic-Ray Spectra with the BESS-TeV Spectrometer
• Neutral pion emission from accelerated protons in the supernova remnant W44
• The Most Likely Sources of High Energy Cosmic-Ray Electrons in Supernova Remnants
• Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment
• Kneelike structure in the spectrum of the heavy component of cosmic rays observed with KASCADE-Grande
• Pulsars versus Dark Matter Interpretation of ATIC/PAMELA
• A statistical procedure for the identification of positrons in the PAMELA experiment
• Evidence of X-ray Synchrotron Emission from Electrons Accelerated to 40 TeV in the Supernova Remnant Cassiopeia A
• Models of the Knee in the Energy Spectrum of Cosmic Rays
• Diffusive propagation of cosmic rays from supernova remnants in the Galaxy. II: anisotropy
• Galactic electrons and positrons at the Earth:new estimate of the primary and secondary fluxes
• On cosmic ray acceleration in supernova remnants and the FERMI/PAMELA data
• Three component model of cosmic ray spectra from 10 GeV to 100 PeV
• The Cosmic-Ray Proton and Helium Spectra measured with the CAPRICE98 balloon experiment
• Energy spectra of primary and secondary cosmic-ray nuclei measured with TRACER
• Direct Evidence for Hadronic Cosmic-Ray Acceleration in the Supernova Renmant IC 443
• Inhomogeneity in the Supernova Remnant Distribution as the Origin of the PAMELA Anomaly
• High-energy electron observations by PPB-BETS flight in Antarctica
• Composition of Primary Cosmic-Ray Nuclei at High Energies
• Is the PAMELA anomaly caused by the supernova explosions near the Earth?
• Status of the GAMMA-400 Project
• VHE Gamma-ray supernova remnants
• Measurements of cosmic-ray energy spectra with the 2nd CREAM flight
• Fine structure in the cosmic ray spectrum: Further analysis and the next step

Cited by in corpus (2)

• On the possiblity of using vertically pointing Central Laser Facilities to calibrate the Cherenkov Telescope Array
• CTA: the future of ground-based gamma-ray astrophysics