Possible physics scenarios behind cosmic-ray "anomalies"

Abstract

Direct techniques for cosmic ray observations have reached an unprecedented level of precision, unveiling fine-details of the energy spectra. I will introduce the evidence for new spectral features which has been accumulated by new experiments over the past few years, and review the main ideas invoked in the theoretical explanations of the revealed spectral breaks and elemental spectra non-universality. I will also briefly comment on the complementary situation of antimatter observations.

16 pages, 4 figures. Highlight talk contribution to the Proceeding of the 34th International Cosmic Ray Conference, The Hague, The Netherlands

References in corpus (11)

• Observation of an anomalous positron abundance in the cosmic radiation
• Spectral breaks as a signature of cosmic ray induced turbulence in the Galaxy
• Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment
• Measurement of boron and carbon fluxes in cosmic rays with the PAMELA experiment
• High-energy antiprotons from old supernova remnants
• AMS-02 Antiprotons Reloaded
• Cosmic-Ray Hardenings in the Light of AMS-02
• "Discrepant hardenings" in cosmic ray spectra: a first estimate of the effects on secondary antiproton and diffuse gamma-ray yields
• Can AMS-02 discriminate the origin of an anti-proton signal?
• Positrons from pulsar winds
• Space-Based Cosmic-Ray and Gamma-Ray Detectors: a Review

Cited by in corpus (6)

• Cosmic-ray transport from AMS-02 B/C data: benchmark models and interpretation
• Acceleration of Cosmic Rays in Supernova Shocks: elemental selectivity of the injection mechanism
• A Genetic Algorithm for Astroparticle Physics Studies
• Plus Charge Prevalence in Cosmic Rays: Room for Dark Matter in the Positron Spectrum
• Testing universality of cosmic-ray acceleration with proton/helium data from AMS and Voyager-1
• Spectral features in galactic cosmic rays