The bump in the ultrahigh energy cosmic ray spectrum

Details The bump in the ultrahigh energy cosmic ray spectrum The bump in the ultrahigh energy cosmic ray spectrum

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987zhetf..93..812b&link_type=abstract

Zhurnal Eksperimental'noi i Teoreticheskoi Fiziki (ISSN 0044-4510), vol. 93, Sept. 1987, p. 812-824. In Russian.

Astronomy and Astrophysics

Astronomy

8

Cosmic Rays, Elementary Particle Interactions, Energetic Particles, Energy Spectra, Electron-Positron Pairs, Energy Dissipation, Local Group (Astronomy), Pair Production, Proton Scattering, Relic Radiation

Scientific paper

The interaction between ultrahigh energy cosmic-ray protons and 27 K microwave radiation leads to such features in the differential energy spectrum as a bump due to electron-positron pair production, a dip in electron-positron pair production, a photopion bump, and a 'black-body cut-off'; these features appear consecutively with increasing energy. The spectrum from a single source is calculated as well as those from many sources (diffuse spectra). In Local Supercluster models, the bump is predicted for a large interval of propagation times.

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