The Dipole anisotropy in the Decaying-Particle Universe Models with Nonzero Cosmological Constant
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概要
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The ratio (φ) of 4π times the velocity perturbations to the dipole moment of the galactic density perturbations is derived in decaying-particle universe models with nonzero cosmological constant in two cases: the first case of only massless daughter particles and the second case in which the daughter particles consist of a massless particle and a massive particle. For the various values of τ_d (=the decay time × the Hubble constant), the curves of constant φ are shown in the (Ω_0,λ_0) diagram, and the allowable regions satisfying the observational relation φ≃0.9 in it are examined. For a comparison the curves in the non-decay dust universe models also are shown.
- 理論物理学刊行会の論文
- 1987-12-25
著者
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TOMITA Kenji
Research Institute for Theoretical Physics Hiroshima University
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Sugiyama Naoshi
Research Institute For Theoretical Physics Hiroshima University
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