Large-scale galaxy flow from a non-gravitational impulse

Details Large-scale galaxy flow from a non-gravitational impulse Large-scale galaxy flow from a non-gravitational impulse

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.237p..31h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 237, March 1, 1989, p. 31P-38P. Research supported by t

Astronomy and Astrophysics

Astronomy

2

Galactic Clusters, Galactic Evolution, Radiation Pressure, Solar Gravitation, Dark Matter, Flow Velocity, Perturbation Theory, Pressure Gradients

Scientific paper

A theory is presented describing linear perturbations of an expanding universe containing multiple, independently perturbed, collisionless, gravitationally coupled constituents. Solutions are found in the limit where one initially unperturbed component dominates the total density. The theory is applied to perturbations generated by a nongravitational process in one or more of the light components, as would occur in explosive or radiation-pressure-instability theories of galaxy formation. The apparent dynamical density parameter and correlations between density and velocity amplitude for various populations, are evaluated as a function of cosmic scale factor.

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