Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...365..544b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 365, Dec. 20, 1990, p. 544-558.
Astronomy and Astrophysics
Astrophysics
232
Cosmic Rays, Interstellar Gas, Interstellar Magnetic Fields, Milky Way Galaxy, Particle Acceleration, Solar Neighborhood, Gaseous Diffusion, Gravitational Fields, Hydrostatics, Mass Distribution, Pressure Distribution
Scientific paper
Three gravitational potentials differing in the content of dark matter in the Galactic plane are used to study the structure of the z-distribution of mass and pressure in the solar neighborhood. A P(0) of roughly (3.9 + or - 0.6) x 10 to the -12th dyn/sq cm is obtained, with roughly equal contributions from magnetic field, cosmic ray, and kinetic terms. This boundary condition restricts both the magnitude of gravity and the high z-pressure. It favors lower gravity and higher values for the cosmic ray, magnetic field, and probably the kinetic pressures than have been popular in the past. Inclusion of the warm H(+) distribution carries a significant mass component into the z about 1 kpc regime.
Boulares Ahmed
Cox Donald P.
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