Gravitational lens effects on the redshift-volume measurement of the density parameter

Details Gravitational lens effects on the redshift-volume measurement of the density parameter Gravitational lens effects on the redshift-volume measurement of the density parameter

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...361...27o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 361, Sept. 20, 1990, p. 27-31.

Mathematics

Logic

11

Cosmology, Gravitational Effects, Gravitational Lenses, Red Shift, Astronomical Models, Mass Distribution, Spatial Distribution

Scientific paper

General formulations are presented for the effects of statistical gravitational amplification effects on the cosmological redshift-volume test. The formulations are used to analyze the data of Loh and Spillar (1986), who measured the number of galaxies with fluxes larger than some threshold flux and the total flux of these galaxies and obtained a value of Omega(0) roughly one. How deeply the amplification affects the resulting values of the cosmological parameters is studied. It is found that the gravitational lens effects on observational cosmology cannot be negligible.

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