A theory of local and global processes which affect solar wind electrons. 1: The origin of typical 1 AU velocity distribution functions: Steady state theory

Details A theory of local and global processes which affect solar wind electrons. 1: The origin of typical 1 AU velocity distribution functions: Steady state theory A theory of local and global processes which affect solar wind electrons. 1: The origin of typical 1 AU velocity distribution functions: Steady state theory

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978stin...7831033s&link_type=abstract

A theory of local and global processes which affect solar wind electrons. 1: The origin of typical 1 AU velocity distribution

Physics

Coulomb Collisions, Electron Distribution, Kinetic Theory, Mathematical Models, Particle Theory, Solar Wind, Boltzmann Transport Equation, Distribution Functions, Solar Corona

Scientific paper

A detailed first principle kinetic theory for electrons which is neither a classical fluid treatment nor an exospheric calculation is presented. This theory illustrates the global and local properties of the solar wind expansion that shape the observed features of the electron distribution function, such as its bifurcation, its skewness and the differential temperatures of the thermal and suprathermal subpopulations. Coulomb collisions are substantial mediators of the interplanetary electron velocity distribution function and they place a zone for a bifurcation of the electron distribution function deep in the corona. The local cause and effect precept which permeates the physics of denser media is modified for electrons in the solar wind. The local form of transport laws and equations of state which apply to collision dominated plasmas are replaced with global relations that explicitly depend on the relative position of the observer to the boundaries of the system.

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