Physics
Scientific paper
Jan 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aipc..385..185r&link_type=abstract
Scientific basis for robotic exploration close to the sun. AIP Conference Proceedings, Volume 385, pp. 185-188 (1997).
Physics
2
Particle Emission, Solar Wind, Magnetohydrodynamics And Plasmas, Solar Wind Plasma, Sources Of Solar Wind
Scientific paper
Spacecraft measurements and MHD simulations strongly suggest the following conclusions on the role of waves, turbulence, and structures in the heating and acceleration of the solar wind: If waves heat and accelerate the solar wind, whether or not by a turbulence mechanism, these waves are not those observed in situ at 0.3 AU and beyond; the relevant waves will have been mostly dissipated by then. The solar surface is not likely to be the source of waves that heat or accelerate, because the surface motions do not produce flat enough spectra. Finally, the wave heating and acceleration picture is a highly constrained, finely tuned version of the ``microflare'' scenario because a wave source in the lower coronal or below must tap magnetic field structures or bulk flow energy and microflares are the most natural source of these. The main problem for wave and related models is that of finding an energy source for short time-scale fluctuations.
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