Acceleration of solar wind in polar coronal holes by induction heating

Details Acceleration of solar wind in polar coronal holes by induction heating Acceleration of solar wind in polar coronal holes by induction heating

Jun 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995sowi.confr..67c&link_type=abstract

Saint Petersburg State Univ., International Solar Wind 8 Conference, p. 67

Physics

Solar Wind, Coronal Holes, Solar Corona, Induction Heating, Magnetic Fields, Energy Transfer, Plasma Heating, Flux Density, Dissipation, High Speed, Streams

Scientific paper

The universal induction heating mechanism supplying with the energy all the processes of coronal heating and the solar wind acceleration is developed. The observed relative 'trembling' of photospheric super-large scale magnetic fields with quasi-periods of 1-4 days amounts 30-40 percent in amplitude. The inductive electric field appears in the corona. The electric currents cause the Joule dissipation. The uneven heating leads to the solar wind acceleration. A model is suggested in which high-speed streams in space are caused by the combination of the enhanced inductive energy flux from the solar coronal active regions; the work against the regular magnetic field; losses from coronal emission. The consideration is made in terms of the dissipative solar wind theory with the finite electrical conductivity of plasma. The leakage of plasma and the energy flux across the magnetic field, caused by the induction heating processes, are taken into account. The polar coronal holes (and the mid-latitude ones) are indicators of energy transfer balance but not direct sources of high-speed streams in the solar wind.

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