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Magnetic Helicity, Dynamo Action, Reconnection, and Particle Acceleration

Published online by Cambridge University Press:  25 May 2016

G. B. Field  and
E. G. Blackman
G. B. Field
Affiliation:
Harvard-Smithsonian Center for Astrophysics, Cambridge, MA 02138, U.S.A.
E. G. Blackman
Affiliation:
California Institute of Technology, Pasadena, CA 91125, U.S.A.

Abstract

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Blackman & Field have shown that a working α-Ω dynamo requires finite but opposite flows of small- and large-scale magnetic helicity through a body's surface. The helicity is accompanied by magnetic energy available for dissipation. The observed solar coronal nonthermal power is consistent with the derived lower limit required. This link between dynamo field generation and nonthermal emission should generally apply to stars, spiral galaxies, and accretion disks.

Type
Part II: Posters
Information
Symposium - International Astronomical Union , Volume 195: Highly Energetic Physical Processes and Mechanisms , 2000 , pp. 389 - 390
Copyright
Copyright © Astronomical Society of the Pacific 2000 

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