Results 31 to 40 of about 114,518 (203)

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

Measuring Hubble's Constant in our Inhomogeneous Universe [PDF]

open access: yes, 1995
Recent observations of Cepheids in the Virgo cluster have bolstered the evidence that supports a Hubble constant in 70-90 km/s/Mpc range. This evidence, by and large, probes the expansion of the Universe within 100 Mpc.
Dursi, L. Jonathan   +2 more
core   +2 more sources

An independent determination of the local Hubble constant [PDF]

open access: yes, 2017
The relationship between the integrated H$\beta$ line luminosity and the velocity dispersion of the ionized gas of HII galaxies and giant HII regions represents an exciting standard candle that presently can be used up to redshifts z ~ 4.
Basilakos, Spyros   +8 more
core   +2 more sources

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

The Far‐Field Hubble Constant

open access: yesThe Astrophysical Journal, 1998
18 pages; figure[1-2,7-9].ps are EPS files included in body of text, figure[3-6].jpg are JPEG images not included; LaTeX (AASTeX v4.0); Submitted to The Astrophysical Journal. Compressed PostScript of entire paper with all figures included is available at ftp://mars.tuc.noao.edu/sbf/hubble.ps ...
Lauer, Tod R.   +4 more
openaire   +2 more sources

Unimodular Theory of Gravity in Light of the Latest Cosmological Data

open access: yesUniverse, 2023
The unimodular theory of gravity is an alternative perspective to the traditional general relativity of Einstein and opens new possibilities for exploring its implications in cosmology.
Naveen K. Singh, Gopal Kashyap
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

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

Home - About - Disclaimer - Privacy