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Contributions to the Local Gravitational Field from Beyond the Virgo Supercluster

Published online by Cambridge University Press:  19 July 2016

Amos Yahil
Amos Yahil*
Affiliation:
State University of New York, Stony Brook, NY 11794-2100, USA

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In the last decade, the inter-relation between the density structure and velocity perturbations in the local Virgo Supercluster (VSC) has provided a major means of determining the cosmological density parameter Ωo. The underlying dynamics, the so-called Virgocentric Flow Model (VFM), assumes that the relevant peculiar gravitational field in the VSC is dominated by the monopole term, due to material inside the VSC. Over the past year, however, this premise has been called into question, on both observational and theoretical grounds. It has become clear that the contributions to the local gravitational field from beyond the VSC cannot be neglected. The major new developments are summarized here. A more detailed review is given elsewhere (Yahil 1987).

Type
Chapter III. The Classical Quantities of Cosmology
Information
Symposium - International Astronomical Union , Volume 124: Observational Cosmology , 1987 , pp. 247 - 250
Copyright
Copyright © Reidel 1987 

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