Dominant two-dimensional solar wind turbulence with implications for cosmic ray transport

Details Dominant two-dimensional solar wind turbulence with implications for cosmic ray transport Dominant two-dimensional solar wind turbulence with implications for cosmic ray transport

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996jgr...101.2511b&link_type=abstract

Journal of Geophysical Research, Volume 101, Issue A2, p. 2511-2522

Physics

252

Interplanetary Physics: Cosmic Rays, Interplanetary Physics: Mhd Waves And Turbulence, Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Energetic Particles, Solar

Scientific paper

Two new methods for distinguishing two-dimensional (2D) turbulence from slab turbulence are applied to Helios magnetometer data. Two-component models with varying slab and 2D ingredients are considered. Both methods indicate that solar wind magnetic turbulence possesses a dominant (~85% by energy) 2D component. The presence of such a large 2D component provides a natural solution to the long-standing problem of ``too small'' cosmic ray mean free paths derived from quasilinear scattering theory when using the slab model.

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