N-body experiments and missing mass in clusters of galaxies

Details N-body experiments and missing mass in clusters of galaxies N-body experiments and missing mass in clusters of galaxies

Dec 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...234l..97s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 234, Dec. 1, 1979, p. L97-L99.

Astronomy and Astrophysics

Astrophysics

16

Galactic Clusters, Many Body Problem, Mass Distribution, Missing Mass (Astrophysics), Stellar Mass, Astronomical Models, Radial Velocity, Velocity Distribution

Scientific paper

It is commonly assumed that the distributions of surface density and radial-velocity dispersion in clusters of galaxies are sensitive tracers of the underlying distribution of any unseen mass. N-body experiments have been used to test this assumption. Calculations with equal-mass systems indicate that the effects of the underlying mass distribution cannot be detected by observations of the surface-density or radial-velocity distributions, and the existence of an extended binding mass in all well-studied clusters would be consistent with available observations.

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