Cosmological observations in an inhomogeneous universe - Distance-redshift relation

Details Cosmological observations in an inhomogeneous universe - Distance-redshift relation Cosmological observations in an inhomogeneous universe - Distance-redshift relation

May 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...355....1w&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 355, May 20, 1990, p. 1-12.

Astronomy and Astrophysics

Astrophysics

31

Astronomical Models, Cosmology, Quasars, Red Shift, Gravitational Lenses, Relativistic Theory, Spatial Distribution, Universe

Scientific paper

The distance-redshift relation (DRR) in an inhomogeneous universe is studied. On the basis of relativistic optical equations, numerical calculations are performed to get a realistic DRR. It is shown that the DRR is coincident with that in the standard Friedmann-Robertson-Walker (FRW) model on average if galaxies or clusters of galaxies are assumed to be completely transparent. It is also shown that the effect of the shear along the light path is small if the scale of inhomogeneities is larger than galactic scale, and that these numerical results are consistent with the analytical investigation of Futamase and Sasaki (1989).

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