Physics – General Physics
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrva..37.3052w&link_type=abstract
Physical Review A - General Physics, 3rd Series (ISSN 0556-2791), vol. 37, April 15, 1988, p. 3052-3057. DOE-sponsored research.
Physics
General Physics
7
Dense Plasmas, Galaxies, Gravitational Effects, Interstellar Matter, Polarization (Charge Separation), Electric Charge, Plasma Composition, Scale Height
Scientific paper
It is generally thought that equilibrium self-gravitating condensations of plasma must be electrically quasi-neutral. While this is true in the case of an atomic plasma, there is a realizable type of plasma in which it is not true. If the massive component of a two-component plasma consists of charged macroscopic solid grains for which the charge-to-mass ratio is of order sq rt G, then self-gravitation and thermalization lead to substantial equilibrium charge separation. Within a thermalized gravitational condensation of this plasma, the scale height of the oppositely charged low-mass component is much larger than that of the grains. Consequently, the large-scale charge-to-mass ratio is also of order sq rt G. There is evidence that an understanding of such condensations may be relevant to the understanding of galaxies.
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