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THE 1% CONCORDANCE HUBBLE CONSTANT [PDF]

open access: yesThe Astrophysical Journal, 2014
9 pages, 4 figures, v2 reformatted in emulateapj, updated to match accepted ...
Bennett, C. L.   +3 more
openaire   +2 more sources

Hubble Tension: The Evidence of New Physics

open access: yesUniverse, 2023
The ΛCDM model provides a good fit to most astronomical observations but harbors large areas of phenomenology and ignorance. With the improvements in the precision and number of observations, discrepancies between key cosmological parameters of this ...
Jian-Ping Hu, Fa-Yin Wang
doaj   +1 more source

MEASURING THE HUBBLE CONSTANT WITH THE HUBBLE SPACE TELESCOPE [PDF]

open access: yesProceedings of the International Astronomical Union, 1995
AbstractTen years ago our team completed the Hubble Space Telescope Key Project on the extragalactic distance scale. Cepheids were detected in some 25 galaxies and used to calibrate four secondary distance indicators that reach out into the expansion field beyond the noise of galaxy peculiar velocities.
Freedman, W., Kennicutt, R., Mould, J.
openaire   +3 more sources

The Hubble Constant [PDF]

open access: yesPublications of the Astronomical Society of Australia, 2000
AbstractWith the completion of the Hubble Space Telescope (HST) Key Project on the Extragalactic Distance Scale, it is interesting to form the dimensionless quantity H0t0 by multiplying the Hubble Constant by the age of the Universe. In a matter dominated decelerating Universe with a density exceeding 0·26 of the critical value, H0t0 < 1; in an ...
openaire   +2 more sources

A bias using the ages of the oldest astrophysical objects to address the Hubble tension

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
Recently different cosmological measurements have shown a tension in the value of the Hubble constant, $$H_0.$$ H 0 . Assuming the $$\Lambda $$ Λ CDM model, the Planck satellite mission has inferred the Hubble constant from the cosmic microwave ...
André A. Costa, Zelin Ren, Zhixiang Yin
doaj   +1 more source

A Gravitational-wave Measurement of the Hubble Constant Following the Second Observing Run of Advanced LIGO and Virgo

open access: yesThe Astrophysical Journal, 2021
This paper presents the gravitational-wave measurement of the Hubble constant ( H _0 ) using the detections from the first and second observing runs of the Advanced LIGO and Virgo detector network.
B. P. Abbott   +1189 more
doaj   +1 more source

Connecting Infrared Surface Brightness Fluctuation Distances to Type Ia Supernova Hosts: Testing the Top Rung of the Distance Ladder

open access: yesThe Astrophysical Journal, 2023
We compare infrared surface brightness fluctuation (IR SBF) distances measured in galaxies that have hosted type Ia supernovae (SNe Ia) to distances estimated from SNe Ia light-curve fits.
Peter Garnavich   +8 more
doaj   +1 more source

Investigating the Hubble tension: Effect of cepheid calibration

open access: yesPhysics Letters B, 2023
Recent observations of Type Ia supernovae (SNe) by SH0ES collaboration (R11 and R16) diverge from the value reported by recent CMBR observations utilising the Planck satellite and application of the ΛCDM cosmological model by at least 3σ. It is among the
Rahul Kumar Thakur   +4 more
doaj   +1 more source

H0 tension in torsion-based modified gravity

open access: yesNuclear Physics B, 2023
The rising concern in the Hubble constant tension (H0 tension) of the cosmological models motivates the scientific community to search for alternative cosmological scenarios that could resolve the H0 tension.
Sanjay Mandal   +3 more
doaj   +1 more source

Revisiting the Oldest Stars as Cosmological Probes: New Constraints on the Hubble Constant

open access: yesThe Astrophysical Journal, 2023
Despite the tremendous advance of observational cosmology, the value of the Hubble constant ( H _0 ) is still controversial (the so-called “Hubble tension”) because of the inconsistency between local/late-time measurements and those derived from the ...
Andrea Cimatti, Michele Moresco
doaj   +1 more source

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