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Global Value of Hubble Constant
Publications of the Astronomical Society of Australia, 1982An accurate determination of the global Hubble Constant needs distance to objects well outside the Local Supercluster with redshift greater than ~ 2000 km/s. This is mainly to reduce the effect of the peculiar motion of the Local Group on the measured redshifts as well as to get away from the gravitational influence of the nearby high density regions ...
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Physics Today, 2013
Perhaps the fundamental parameter of cosmology, the ratio of an object’s recessional speed to its distance from us encodes information about the universe’s age, composition, and structure.
Mario Livio, Adam G. Riess
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Perhaps the fundamental parameter of cosmology, the ratio of an object’s recessional speed to its distance from us encodes information about the universe’s age, composition, and structure.
Mario Livio, Adam G. Riess
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Physics Reports, 1998
Abstract Measuring the Hubble constant ( H 0 ), or the rate of expansion of the universe, has proved to be a much more difficult enterprise than originally anticipated. Recent, rapid progress in measuring accurate distances to galaxies, coupled with the prospects for measuring the Hubble constant using other physical techniques offers the promise ...
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Abstract Measuring the Hubble constant ( H 0 ), or the rate of expansion of the universe, has proved to be a much more difficult enterprise than originally anticipated. Recent, rapid progress in measuring accurate distances to galaxies, coupled with the prospects for measuring the Hubble constant using other physical techniques offers the promise ...
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2009
The Hubble diagram of distant type Ia supernovae, zero-pointed by nearby SNe Ia with Cepheid distances from HST observations yields H 0=62.3. The basis of this value has been weakened because the period–luminosity relation of Cepheids is not universal, but depends on their metallicity and possibly other parameters. An independent (Pop.
G. A. Tammann, A. Sandage
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The Hubble diagram of distant type Ia supernovae, zero-pointed by nearby SNe Ia with Cepheid distances from HST observations yields H 0=62.3. The basis of this value has been weakened because the period–luminosity relation of Cepheids is not universal, but depends on their metallicity and possibly other parameters. An independent (Pop.
G. A. Tammann, A. Sandage
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Abstract Einstein believed that any valid solution of his gravitational field equations would demand a universe with matter, but Dutch theorist Willem de Sitter disagreed. He devised an ‘empty’ solution which, although artificial, was still capable of providing physical insight.
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The Hubble Constant: A Discourse
Publications of the Astronomical Society of the Pacific, 1996Multiple evidence is compiled and discussed that the large-scale value of the Hubble constant must lie within the range of 45 < H0 < 65.
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Physics Today, 1986
Hubble's celebrated constant, which relates the recessional velocities of galaxies to their distances, is perhaps the most important number in extragalactic astronomy. Using it, along with their favorite models, astronomers and cosmologists derive the age of the universe, estimate its size, calculate the luminosity of quasars and much more ...
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Hubble's celebrated constant, which relates the recessional velocities of galaxies to their distances, is perhaps the most important number in extragalactic astronomy. Using it, along with their favorite models, astronomers and cosmologists derive the age of the universe, estimate its size, calculate the luminosity of quasars and much more ...
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Cosmological analysis using Panstarrs data: Hubble constant and direction dependence
Physics of the Dark Universe, 2021Meghendra Singh, Shashikant Gupta
exaly
Challenges for the statistical gravitational-wave method to measure the Hubble constant
Physics of the Dark Universe, 2023Emery Trott
exaly