A TURBULENCE-DRIVEN MODEL FOR HEATING AND ACCELERATION OF THE FAST WIND IN CORONAL HOLES

作者:Verdini A*; Velli M; Matthaeus W H; Oughton S; Dmitruk P
来源:Astrophysical Journal Letters, 2010, 708(2): L116-L120.
DOI:10.1088/2041-8205/708/2/L116

摘要

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 upward 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.

  • 出版日期2010-1-10