The history of re-connection and the concept of the solar wind plasma with relatively small electrical conductivity

Details The history of re-connection and the concept of the solar wind plasma with relatively small electrical conductivity The history of re-connection and the concept of the solar wind plasma with relatively small electrical conductivity

Jun 1995

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

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

Computer Science

Solar Wind, Magnetohydrodynamics, Plasma Interactions, Boundary Value Problems, Low Conductivity, Boundary Conditions, Electric Fields, Electrical Resistivity, Entropy, Thermodynamic Equilibrium

Scientific paper

Petschek's 're-connection' model, aspiring to be universal, treated as a boundary problem meets unresolvable difficulties connected with impossibility to specify correctly boundary and initial conditions. This problem was incorrectly formulated. Hence, ineradicable logarithmic singularities occurred on the boundary surfaces. Attempts to eliminate them by incorporating the finite electrical conductivity are incorrect. This should lead to the change in the equation type, boundary condition type and in consequence to the change in solutions. Besides, the slow mode shocks cannot be driven by small internal source. As an alternative a new plasma concept is suggested. The state of fully ionized plasma in space depends completely on the entropy of the plasma heating source and on the process in which plasma is involved. The presumptive source of the solar wind creation - the induction electric field of the solar origin - has very low entropy. The state of plasma should be very far from the thermodynamic equilibrium. Debye's screening is not complete. The excitation of the powerful resonant self-consistent electric fields in plasma provides low electric conductivity. The MHD problems should be treated in frameworks of dissipative theories.

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