Journal
ASTROPHYSICAL JOURNAL LETTERS
Volume 708, Issue 2, Pages L116-L120Publisher
IOP PUBLISHING LTD
DOI: 10.1088/2041-8205/708/2/L116
Keywords
MHD; solar wind; turbulence; waves
Categories
Funding
- NASA [NNX08AI47G]
- NSF [ATM-0539995, ATM-0752135]
- Belgian Federal Science Policy Office
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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.
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