Cosmological observations in an inhomogeneous universe

Details Cosmological observations in an inhomogeneous universe Cosmological observations in an inhomogeneous universe

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989dmsu.conf...11w&link_type=abstract

Proceedings of Workshop on Dark Matter and the Structure of the Universe, held at the Research Institute for Theoretical Physics

Astronomy and Astrophysics

Astrophysics

1

Cosmology, Red Shift, Universe, Astrophysics, Doppler Effect

Scientific paper

The distance-redshift relation in an inhomogeneous universe is studied. On the basis of relativistic optical equations, numerical calculations are performed to get a realistic distance-redshift relation. It is shown that the distance-redshift relation 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. Researchers also show that the effect of shear along the light path is small if the scale of inhomogeneities is larger than galactic scale and that numerical results are consistent with the analytical investigation recently done by Futamase and Sasaki.

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