Nature and distribution of dark matter. II - Binaries, groups, and clusters

Details Nature and distribution of dark matter. II - Binaries, groups, and clusters Nature and distribution of dark matter. II - Binaries, groups, and clusters

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989japa...10..425v&link_type=abstract

Journal of Astrophysics and Astronomy (ISSN 0250-6335), vol. 10, Dec. 1989, p. 425-432.

Astronomy and Astrophysics

Astrophysics

1

Dark Matter, Galactic Clusters, Mass Distribution, Celestial Mechanics, Gravitational Effects, Halos

Scientific paper

The mass-radius relationship for aggregates of galaxies (binaries, small groups, and clusters) is studied using a simple best-fit analysis. It is found that the binaries are just two galaxies, each with an individual isothermal dark matter halo, moving under mutual gravitational attraction. Power-law relations to describe the groups and clusters are examined, suggesting that two components exist in dark matter: one clustered around the galaxies, and one distributed smoothly.

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