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Detailed Reference Information |
Hollweg, J.V. and Johnson, W. (1988). Transition region, corona, and solar wind in coronal holes: Some two-fluid models. Journal of Geophysical Research 93: doi: 10.1029/88JA00188. issn: 0148-0227. |
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We consider the possibility that the heating of the corona and the heating and acceleration of the solar wind can be described by a single process, namely, the turbulent dissipation of solar-generated Alfven waves at the Kolmogorov rate. The model assumes that Te=Tp in r≤2 RS but drops electron-proton coupling in r>2 Rs. The dissipated wave energy is assumed to heat only the protons. Classical heat conduction is used in r>10 RS, and an electron polytrope is used in r>10 RS. The models have the right qualitative features: a steep temperature rise to T>106 K and acceleration to supersonic speeds. But models with base pressures neT>2¿1014 (cgs) are too slow: v(1 AU)400 km s-1 have lower base pressures: 1014<neT<2¿1014 (cgs). A difficulty with the model is that line-of-sight proton random velocities (thermal plus wave) are larger than values deduced from Lyman &agr; resonant scattering observations in 1.5≤r/RS≤4, and they do not fall off with r to the extent observed. Large random velocities are due in part to a proton temperature peak at r≈3--4 Rs. On the whole, this model seems unsatisfactory, but several possible resolutions are discussed. ¿ American Geophysical Union 1988 |
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Abstract |
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Keywords
Interplanetary Physics, Sources of the solar wind, Interplanetary Physics, MHD waves and turbulence, Solar Physics, Astrophysics, and Astronomy, Corona, Interplanetary Physics, Solar wind plasma |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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