Physics
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufmsh21a0278i&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SH21A-0278
Physics
2149 Mhd Waves And Turbulence (2752, 6050, 7836), 2164 Solar Wind Plasma, 7511 Coronal Holes, 7827 Kinetic And Mhd Theory
Scientific paper
Kinetic models of solar wind generation are essential in order to accurately test detailed mechanisms for producing the required ion acceleration and heating in the collisionless coronal hole. Among the large-scale effects that must be included in such models is the non-resonant ponderomotive force (PMF) due to parallel- propagating low-frequency Alfven waves emitted by the Sun. However, a kinetic description of this force does not seem to exist, and the well-known fluid expressions are not applicable to this problem. We present a kinetic analysis of the PMF which leads to new terms in the kinetic guiding center equation used to describe the evolution of an ion distribution in the solar wind. We discuss the physical basis for these terms and incorporate them into our kinetic model for the preferential acceleration of heavy ions in coronal holes.
Isenberg Philip A.
Vasquez Bernard J.
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