Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...131l..11b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 131, no. 2, Feb. 1984, p. L11-L14. Research supported by the Science and Engin
Astronomy and Astrophysics
Astrophysics
29
Electrodynamics, Electron Beams, Plasma Currents, Solar Flares, Electric Fields, Electrostatic Charge, Space Charge, Steady State, X Rays
Scientific paper
The electrodynamics of electron beam neutralisation in solar flares is discussed in order to resolve recent controversy over the origin and evolution of the return current. It is demonstrated that return currents are established electrostatically and that the large radii of flare beams imply a resistive time scale so long that inductive effects are negligible along the finite beam length, even for anomalous conductivities. Consequently the commonly used steady state electrostatic (Knight and Sturrock) treatment of return current dissipation in flares is amply justified.
Bingham Richard
Brown John C.
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