Astronomy and Astrophysics – Astrophysics
Scientific paper
Jan 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...209...21b&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 209, no. 1-2, Jan. 1989, p. 21-26.
Astronomy and Astrophysics
Astrophysics
8
Dark Matter, Interstellar Gas, Oort Cloud, Cosmic Rays, Galactic Structure, Gravitational Fields, Interstellar Magnetic Fields, Star Distribution
Scientific paper
The contribution of all nondark matter to gravitational acceleration 300-500 kpc off the galactic plane is shown to be increased by more than 20 percent when actual observations of the gas distribution are included in the calculations. The requirements for a dark-matter component are thus reduced by about 40 percent with no change in the estimated midplane density of the observed matter. The present theory involved a reduction of the Oort limit itself by about 20 percent.
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