Apparent Acceleration through Large-Scale Inhomogeneities : Post-Friedmannian Effects of Inhomogeneities on the Luminosity Distance(Astrophysics and Relativity)

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概要

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• We re-analyze the observed magnitude-redshift relation of type la supernovae (SNe Ia) and examine the possibility that the apparent acceleration of the cosmic expansion is not caused by dark energy but is instead a consequence of the large-scale inhomogeneities in the universe. We propose a method to phenomenologically describe the effects of the large-scale inhomogeneities without relying on the specific toy models of the inhomogeneous universe. This method clearly illustrates how the post-Friedmannian effects of inhomogeneities, i.e. the effects due to the deviation from a perfectly homogeneous and isotropic model, act as an effective cosmological constant in the magnitude-redshift relation of SNe Ia.

• 理論物理学刊行会の論文
• 2007-06-25

著者

• Kasai Masumi

  Graduate School Of Science And Technology Hirosaki University

関連論文

• Secular Increase of the Astronomical Unit : a Possible Explanation in Terms of the Total Angular-Momentum Conservation Law
• Apparent Acceleration through Large-Scale Inhomogeneities : Post-Friedmannian Effects of Inhomogeneities on the Luminosity Distance(Astrophysics and Relativity)
• Perturbative Approach to the Gravitational Lensing by a Non-Spherically Distorted Compact Object(Astrophysics and Cosmology)
• An Analytical Approximation of the Luminosity Distance in Flat Cosmologies with a Cosmological Constant(Astrophysics and Cosmology)
• An Analytical Approximation of the Luminosity Distance in Flat Cosmologies with a Cosmological Constant

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