Mathematics – Logic
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...344....1g&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 344, Sept. 1, 1989, p. 1-19. Research supported by NSF.
Mathematics
Logic
97
Astronomical Models, Cosmology, Galactic Clusters, Radial Velocity, Dark Matter, Elliptical Galaxies, Many Body Problem, Spiral Galaxies
Scientific paper
By applying the present simple statistics for two-point cosmological peculiar velocity-correlation measurements to the actual data sets of the Local Supercluster spiral galaxy of Aaronson et al. (1982) and the elliptical galaxy sample of Burstein et al. (1987), as well as to the velocity field predicted by the distribution of IRAS galaxies, a coherence length of 1100-1600 km/sec is obtained. Coherence length is defined as that separation at which the correlations drop to half their zero-lag value. These results are compared with predictions from two models of large-scale structure formation: that of cold dark matter and that of baryon isocurvature proposed by Peebles (1980). N-body simulations of these models are performed to check the linear theory predictions and measure sampling fluctuations.
Davis Martin
Górski Krzysztof M.
Strauss Michael A.
White Simon D. M.
Yahil Amos
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