Quasi-linear heating of protons due to resonant interaction with Gaussian and Lorentzian electromagnetic wave spectrum

Details Quasi-linear heating of protons due to resonant interaction with Gaussian and Lorentzian electromagnetic wave spectrum Quasi-linear heating of protons due to resonant interaction with Gaussian and Lorentzian electromagnetic wave spectrum

Dec 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh41a1918m&link_type=abstract

American Geophysical Union, Fall Meeting 2011, abstract #SH41A-1918

Physics

Plasma Physics

[7807] Space Plasma Physics / Charged Particle Motion And Acceleration, [7829] Space Plasma Physics / Kinetic Waves And Instabilities, [7867] Space Plasma Physics / Wave/Particle Interactions

Scientific paper

The problem of the heating of solar wind plasma has received a special attention during the last decades. Recent observations and theoretical results seem to indicate that most of the acceleration process occurs within a few solar radii from the Sun and the main mechanism is due to resonant absorption of ion-cyclotron waves. However, the detailed processes for the energy transfer between waves and different particle species is still an open question. To address these issues, we investigate the wave-particle interaction and evolution of circularly polarized electromagnetic proton-cyclotron waves propagating parallel to the background magnetic field. We have developed a nonlinear theory to study the energy transfer between protons and waves, with the subsequent heating of the particles, to investigate how the shape of the particle velocity distribution functions are controlled and regulated in the solar wind. In particular, we have solved numerically a couple systems of equations for the quasi-linear interaction between a distribution of bi-Maxwellian protons and two kinds of wave spectrum. The first Gaussian and the second Lorentzian. Thus, this way we can compare the results of the wave-particle interaction spectrum with different tails.

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