Potential, velocity, and density fields from redshift-distance samples: Application - Cosmography within 6000 kilometers per second

Details Potential, velocity, and density fields from redshift-distance samples: Application - Cosmography within 6000 kilometers per second Potential, velocity, and density fields from redshift-distance samples: Application - Cosmography within 6000 kilometers per second

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...364..370b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 364, Dec. 1, 1990, p. 370-395. Research supported by the U.S. - Israel Bina

Statistics

Computation

238

Dark Matter, Galactic Clusters, Galactic Evolution, Potential Fields, Radial Velocity, Red Shift, Space Density, Algorithms, Astronomical Maps, Computational Astrophysics, Cosmology, Density Distribution, Monte Carlo Method

Scientific paper

A potential flow reconstruction algorithm has been applied to the real universe to reconstruct the three-dimensional potential, velocity, and mass density fields smoothed on large scales. The results are shown as maps of these fields, revealing the three-dimensional structure within 6000 km/s distance from the Local Group. The dominant structure is an extended deep potential well in the Hydra-Centaurus region, stretching across the Galactic plane toward Pavo, broadly confirming the Great Attractor (GA) model of Lynden-Bell et al. (1988). The Local Supercluster appears to be an extended ridge on the near flank of the GA, proceeding through the Virgo Southern Extension to the Virgo and Ursa Major clusters. The Virgo cluster and the Local Group are both falling toward the bottom of the GA potential well with peculiar velocities of 658 + or - 121 km/s and 565 + or - 125 km/s, respectively.

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