Anisotropy of ultra-high-energy cosmic rays in the single-source diffusion model.

Details Anisotropy of ultra-high-energy cosmic rays in the single-source diffusion model. Anisotropy of ultra-high-energy cosmic rays in the single-source diffusion model.

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989jetp...69..453b&link_type=abstract

Sov. Phys. - JETP, Vol. 69, No. 3, p. 453 - 459

Physics

6

Cosmic Rays: Anisotropy

Scientific paper

The anisotropy of ultra-high-energy (E > 1018eV) cosmic rays is studied in the single-pulsed-source diffusion model. It is shown that for short duration of the production pulse ("instantaneous source") the anisotropy decreases with increasing energy. The increase in anisotropy with energy for longer duration is not as significant as in stationary diffusion models. A model of the origin of the ultra-high-energy (E > 1018 - 1019eV) cosmic rays is considered where they are generated in a nearby active galactic nucleus (NGC 4151 or Cen A). The spectra and their anisotropies are calculated in these models. The anisotropy may be at most 10 - 20% for E ≡ 1019eV.

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