Luminous Matter Distribution, Bulk Flows and Baryon Content in Cosmological Models with a Local Void
نویسندگان
چکیده
منابع مشابه
Luminous Matter Distribution, Bulk Flows and Baryon Content in Cosmological Models with a Local Void
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 in recent redshift surveys, because their inhomogeneity can be weakened by the difference in the feedback system of galaxy formation between the inner and o...
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First galaxy formation is discussed from the viewpoint of hierarchical clustering theory and it is shown that inhomogeneous models with a local void may be compatible with the observed homogeneity of galactic distributions given by recent redshift surveys, because of the difference in the feedback system of galaxy formation in the inner and outer regions. Next it is shown that the observed inho...
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The observational behavior of spherically symmetric inhomogeneous cosmological models is studied, which consist of inner and outer homogeneous regions connected by a shell or an intermediate selfsimilar region. It is assumed that the present matter density parameter in the inner region is smaller than that in the outer region, and the present Hubble parameter in the inner region is larger than ...
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Recent results have suggested that the density of baryons in the Universe, B, is much more uncertain than previously thought, and may be signi cantly higher. We demonstrate that a higher B increases the viability of critical-density cold dark matter (CDM) models. High baryon fraction o ers the twin bene ts of boosting the rst peak in the microwave anisotropy power spectrum and of suppressing sh...
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A local void in the globally Friedmann-Robertson-Walker (FRW) cosmological model is studied. The inhomogeneity is described using the Lemâıtre-Tolman-Bondi (LTB) solution with the spherically symmetric matter distribution based on the faint galaxies number counts. We investigate the effects this has on the measurement of the Hubble constant and the redshift–luminosity distance relation for mode...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 2002
ISSN: 0033-068X,1347-4081
DOI: 10.1143/ptp.108.103