Luminous Matter Distribution, Bulk Flows and Baryon Content in Cosmological Models with a Local Void | Zendy

Kenji Tomita | Zendy

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

Author(s) -

Kenji Tomita

Publication year - 2002

Publication title -

progress of theoretical physics

Language(s) - English

Resource type - Journals

eISSN - 1347-4081

pISSN - 0033-068X

DOI - 10.1143/ptp.108.103

Subject(s) - physics , local void , void (composites) , homogeneity (statistics) , baryon , galaxy , redshift , statistical physics , dark matter , content (measure theory) , astrophysics , theoretical physics , mechanics , statistics , mathematical analysis , two phase flow , flow (mathematics) , materials science , mathematics , composite material

First, we consider galaxy formation from the viewpoint of hierarchicalclustering theory and discuss the possibility that inhomogeneous models with alocal void may be compatible with the observed homogeneity of galacticdistributions found by recent redshift surveys, because their inhomogeneity canbe weakened by the difference in the feedback system of galaxy formationbetween the inner and outer regions. Next, it is shown with the results ofnumerical simulations that the observed inhomogeneity of two-point correlationsof galaxies can be accounted for by these models. Also, the natural appearanceof bulk flows for an off-central observer is shown. Finally the inhomogeneityof baryon contents is discussed from the viewpoint of our inhomogeneous models.Comment: 15 pages, 5 figure

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