Luminous Matter Distribution, Bulk Flows and Baryon Contents in Cosmological Models with a Local Void

Details Luminous Matter Distribution, Bulk Flows and Baryon Contents in Cosmological Models with a Local Void Luminous Matter Distribution, Bulk Flows and Baryon Contents in Cosmological Models with a Local Void

2002-03-08

arxiv.org/abs/astro-ph/0203125v3

Prog.Theor.Phys. 108 (2002) 103

Astronomy and Astrophysics

Astrophysics

15 pages, 5 figures

Scientific paper

10.1143/PTP.108.103

First, we consider galaxy formation from the viewpoint of hierarchical clustering theory and discuss the possibility that inhomogeneous models with a local void may be compatible with the observed homogeneity of galactic distributions found by recent redshift surveys, because their inhomogeneity can be weakened by the difference in the feedback system of galaxy formation between the inner and outer regions. Next, it is shown with the results of numerical simulations that the observed inhomogeneity of two-point correlations of galaxies can be accounted for by these models. Also, the natural appearance of bulk flows for an off-central observer is shown. Finally the inhomogeneity of baryon contents is discussed from the viewpoint of our inhomogeneous models.

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