Anisotropy of the Hubble Constant in a Cosmological Model with a Local Void on Scales of ~ 200 Mpc

Abstract

A spherical cosmological model with a local void on scales of $\sim 200$ Mpc and with an inhomogeneous Hubble constant was proposed in recent two papers. This model explains consistently the observed properties of the cosmic bulk flow, the accelerating behavior of type Ia supernovae and the CMB dipole anisotropy without invoking a cosmological constant. As we are in a position deviated from the center in the model, the anisotropy of the Hubble constant appears owing to the directional difference of the distance from the observer to the boundary of the void region. It is found that the anisotropy is maximally about 6% of the constant in the region of $200\sim 500$ Mpc from us. This inhomogeneity and anisotropy of the Hubble constant are not so large as to be inconsistent with the present observation. The detection of this anisotropy in the future will be useful to clarify the implication of the inhomogeneity of the Hubble constant.

9 pages, 3 figures. Accepted in Prog. Theor. Phys.(2001)

References in corpus (12)

• The Hubble Space Telescope Key Project on the Extragalactic Distance Scale XXIV: The Calibration of Tully-Fisher Relations and the Value of the Hubble Constant
• The Type Ia Supernova 1998bu in M96 and the Hubble Constant
• A Local Hubble Bubble from SNe Ia?
• A Large-Scale Bulk Flow of Galaxy Clusters
• The Velocity Field from Type Ia Supernovae Matches the Gravity Field from Galaxy Surveys
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• The LCO/Palomar 10,000 km/sec Cluster Survey. II. Constraints on Large-Scale Streaming
• Bulk flows and CMB dipole anisotropy in cosmological void models
• Seeking the Local Convergence Depth. The Abell Cluster Dipole Flow to 200 Mpc/h
• Expectations for the Difference Between Local and Global Measurements of the Hubble Constant
• No Hubble Bubble in the Local Universe
• Implications of Cosmic Microwave Background Anisotropies for Large Scale Variations in Hubble's Constant

Cited by in corpus (14)

• A Local Void and the Accelerating Universe
• Accelerated expansion from structure formation
• Local Voids as the Origin of Large-angle Cosmic Microwave Background Anomalies I
• Local Voids as the Origin of Large-angle Cosmic Microwave Background Anomalies: The Effect of a Cosmological Constant
• Local Void vs Dark Energy: Confrontation with WMAP and Type Ia Supernovae
• Constraints on large scale inhomogeneities from WMAP-5 and SDSS: confrontation with recent observations
• Reconciling the local void with the CMB
• Redshift Drift in LTB Void Universes
• Swiss Cheese and a Cheesy CMB
• Is the evidence for dark energy secure?
• CMB observations in LTB universes: Part I: Matching peak positions in the CMB spectrum
• Searching for Cosmological Preferred Axis using cosmographic approach
• Voids as Alternatives to Dark Energy and the Propagation of Gamma Rays through the Universe
• Effect of inhomogeneity of the Universe on a gravitationally bound local system: A no-go result for explaining the secular increase in the astronomical unit