On the pattern of perturbations of the Hubble flow

Details On the pattern of perturbations of the Hubble flow On the pattern of perturbations of the Hubble flow

Sep 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...332l...7g&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 332, Sept. 1, 1988, p. L7-L11.

Statistics

Computation

70

Galactic Structure, Gas Flow, Gravitational Effects, Hubble Diagram, Computational Astrophysics, Galactic Evolution, Power Spectra, Radial Velocity, Statistical Correlation

Scientific paper

The average pattern expected for the large-scale distortions of the Hubble flow driven by gravitational instability is examined. Both bulk flow and shearing motions are considered and the probability distributions for observed radial velocities are presented. Statistical tools are introduced that can be used in galaxy peculiar velocity data analysis to distinguish between different competing scenarios for the evolution of large-scale structure in the universe. These statistical measures are very sensitive to differences in power spectra of primordial inhomogeneities when applied in a distance regime accessible to ongoing observational programs.

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