Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...238.1088l&link_type=abstract
Astrophysical Journal, Part 1, vol. 238, June 15, 1980, p. 1088-1100.
Astronomy and Astrophysics
Astrophysics
5
Gravitational Effects, Magnetic Field Configurations, Magnetostatic Fields, Plasma Cylinders, Plasma Equilibrium, Polytropic Processes, Astronomical Models, Interstellar Matter, Magnetohydrodynamic Stability, Plasma Clouds, Plasma Pinch
Scientific paper
Exact analytic solutions for the static equilibrium of a gravitating plasma polytrope in the presence of magnetic fields are presented. The means of generating various equilibrium configurations to illustrate directly the complex physical relationships between pressure, magnetic fields, and gravity in self-gravitating systems is demonstrated. One of the solutions is used to model interstellar clouds suspended by magnetic fields against the galactic gravity such as may be formed by the Parker (1966) instability. It is concluded that the pinching effect of closed loops of magnetic fields in the clouds may be a dominant agent in further collapsing the clouds following their formation.
Chye Low Boon
Lerche Ian
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