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Structure and evolutionary history of the solar system. III.Analysis of the plasma processes and the hydromagnetic aspects involved in the evolution of the solar system. In order to reduce the speculative element as far as possible, the present analysis tries to connect the cosmogonic processes as directly as possible to laboratory plasma physics and to space phenomena actually observed today. Models of the Laplacian type have been made obsolete by magnetohydrodynamics. Furthermore they are in conflict with observations. A new model is suggested. A plasma surrounding a rotating central body may attain a state of partial corotation which is determined by the balance between gravitation and the centrifugal force acting on a plasma in a dipole field. Condensation from a partially corotating plasma results in grains orbiting in ellipses with e = 1/3 and finally accreting to bodies at 2/3 of the central distance of the point of condensation. An application of the theory of the Saturnian rings and to the asteroidal belt shows that the fall-down ratio 2/3 (derived from the geometry of a dipole field) is essential for the understanding of their structure. The structure of the groups of planets and satellites is also discussed, but only in a preliminary way.
Document ID
19730050982
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Alfven, H.
Arrhenius, G.
(California, University La Jolla, Calif., United States)
Date Acquired
August 7, 2013
Publication Date
March 1, 1973
Publication Information
Publication: Astrophysics and Space Science
Volume: 21
Subject Category
Space Sciences
Accession Number
73A35784
Funding Number(s)
CONTRACT_GRANT: NGR-05-009-110
CONTRACT_GRANT: NGL-05-009-002
Distribution Limits
Public
Copyright
Other

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