Toward a self-consistent treatment of the cyclotron wave heating and acceleration of the solar wind plasma

Details Toward a self-consistent treatment of the cyclotron wave heating and acceleration of the solar wind plasma Toward a self-consistent treatment of the cyclotron wave heating and acceleration of the solar wind plasma

Feb 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jgra..108.1081l&link_type=abstract

Journal of Geophysical Research (Space Physics), Volume 108, Issue A2, pp. SSH 9-1, CiteID 1081, DOI 10.1029/2002JA009479

Physics

Plasma Physics

6

Interplanetary Physics: Solar Wind Plasma, Solar Physics, Astrophysics, And Astronomy: Coronal Holes, Interplanetary Physics: Plasma Waves And Turbulence, Space Plasma Physics: Numerical Simulation Studies

Scientific paper

We have developed a steady state two-fluid description of the radial solar wind expansion close to the coronal base. The model is formulated self-consistently with respect to the radial evolution of turbulence by supplementing the moment equations of the plasma with an equation describing the radial evolution of the Alfvén wave power as originally suggested by Tu et al. [1984]. We assume that there is sufficient wave power in the ion-cyclotron frequency range and determine the resulting acceleration and heating rates of the thermal plasma in the corona and interplanetary space. In improvement of earlier models of the nonlocal dynamics of the expanding corona, the dissipation frequency is determined self-consistently from the ion-cyclotron damping rate. After demonstrating that the time-independent modeling can correctly reproduce the solutions obtained with (in the above sense) non-self-consistent models, the significance of the self-consistent treatment is pointed out. The new solutions are studied in detail, and their implications for the transport of solar energetic particles are discussed.

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