A turbulence-driven model for heating and acceleration of the fast wind in coronal holes

Details A turbulence-driven model for heating and acceleration of the fast wind in coronal holes A turbulence-driven model for heating and acceleration of the fast wind in coronal holes

2009-11-27

arxiv.org/abs/0911.5221v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

accepted for publication in ApJL

Scientific paper

A model is presented for generation of fast solar wind in coronal holes, relying on heating that is dominated by turbulent dissipation of MHD fluctuations transported upwards in the solar atmosphere. Scale-separated transport equations include large-scale fields, transverse Alfvenic fluctuations, and a small compressive dissipation due to parallel shears near the transition region. The model accounts for proton temperature, density, wind speed, and fluctuation amplitude as observed in remote sensing and in situ satellite data.

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