The Bull's-Eye Effect as a Probe of $Ω$

Details The Bull's-Eye Effect as a Probe of $Ω$ The Bull's-Eye Effect as a Probe of $Ω$

1998-01-15

arxiv.org/abs/astro-ph/9801154v2

Astrophys.J. 496 (1998) L85

Astronomy and Astrophysics

Astrophysics

Minor revisions; final version accepted for publication in ApJ Letters. Latex, 16 pages, including 3 figures. Higher resolutio

Scientific paper

10.1086/311248

We compare the statistical properties of structures normal and transverse to the line of sight which appear in theoretical N-body simulations of structure formation, and seem also to be present in observational data from redshift surveys. We present a statistic which can quantify this effect in a conceptually different way from standard analyses of distortions of the power-spectrum or correlation function. From tests with $N$--body experiments, we argue that this statistic represents a new and potentially powerful diagnostic of the cosmological density parameter, $\Omega_0$.

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