The Bull's-Eye Effect as a Probe of the Mass Density of the Universe

Details The Bull's-Eye Effect as a Probe of the Mass Density of the Universe The Bull's-Eye Effect as a Probe of the Mass Density of the Universe

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...19512501m&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #125.01; Bulletin of the American Astronomical Society, Vol. 31, p.1554

Astronomy and Astrophysics

Astronomy

Scientific paper

In the next few years, we will map an appreciable fraction of the Universe by redshift surveys. Redshift surveys are based on the assumption that recession speed is proportional to distance, which is only true to first order. Motions of galaxies are induced by gravity as part of the ongoing process of structure formation. I will show that such motions tend to enhance structures apparently concentric around the observer's position, and argue that the strength of this effect will be a powerful new probe of the mass density of the Universe.

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