Transport of solar wind fluctuations: A two-component model

Details Transport of solar wind fluctuations: A two-component model Transport of solar wind fluctuations: A two-component model

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011jgra..11608105o&link_type=abstract

Journal of Geophysical Research, Volume 116, Issue A8, CiteID A08105

Physics

Plasma Physics

3

Interplanetary Physics: Interplanetary Magnetic Fields, Interplanetary Physics: Mhd Waves And Turbulence (2752, 6050, 7836), Interplanetary Physics: Pickup Ions, Space Plasma Physics: Transport Processes

Scientific paper

We present a new model for the transport of solar wind fluctuations which treats them as two interacting incompressible components: quasi-two-dimensional turbulence and a wave-like piece. Quantities solved for include the energy, cross helicity, and characteristic transverse length scale of each component, plus the proton temperature. The development of the model is outlined and numerical solutions are compared with spacecraft observations. Compared to previous single-component models, this new model incorporates a more physically realistic treatment of fluctuations induced by pickup ions and yields improved agreement with observed values of the correlation length, while maintaining good observational accord with the energy, cross helicity, and temperature.

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