Production of anomalous cosmic rays from pick-up ions and their inward diffusion from the termination shock of the solar wind

Details Production of anomalous cosmic rays from pick-up ions and their inward diffusion from the termination shock of the solar wind Production of anomalous cosmic rays from pick-up ions and their inward diffusion from the termination shock of the solar wind

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...284..599f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 284, no. 2, p. 599-611

Astronomy and Astrophysics

Astrophysics

16

Cosmic Rays, Hydrodynamic Equations, Ions, Particle Diffusion, Shock Waves, Solar Wind, Anomalies, Interplanetary Medium, Photoionization

Scientific paper

An investigation of the upwind-downwind asymmetries in the heliospheric pressure distributions of the anomalous cosmic ray species is presented. The time-independent hydrodynamic cosmic ray diffusion equation is solved analytically starting from precalculated element-specific source distributions of the high energy particles at the solar wind termination shock which serves as their source surface. The source distributions are derived from the strongly asymmetric pick-up ion fluxes which arrive at the termination shock and represent the seed-population for the anomalous components. The resulting upwind-downwind asymmetries of the cosmic ray pressure distributions in the heliosphere are calculated assuming that the source surface is spherically symmetric with a nearly linear dependence of the source strength on the local pick-up ion fluxes.

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