Results 71 to 80 of about 546,296 (162)

A void in the Hubble tension? The end of the line for the Hubble bubble

, 2022
The Universe may feature large-scale inhomogeneities beyond the standard paradigm, implying that statistical homogeneity and isotropy may be reached only on much larger scales than the usually assumed $\sim$100 Mpc. This means that we are not necessarily
Marra, Valerio, Camarena, David, Clarkson, Chris, Sakr, Ziad   +3 more
core   +1 more source

Hubble News Archive

, 2008
Hubble site this is a collection of all publicly released pictures from the Hubble Space Telescope. Accompanying each photograph is the official news release, an introduction to the object, fast facts, and related frequently asked questions.

core  

A new parametrization of Hubble function and Hubble tension

We present a new Hubble parameterization method and employ observational data from Hubble, Pantheon, and Baryon Acoustic Oscillations to constrain model parameters.
Wang, Zhen-Yu, Han, Zhan-Wen, Yang, Rong-Jia, He, Tong-Yu, Yin, Jia-Jun   +4 more
core   +1 more source

Dark energy in light of DESI DR1 and Hubble tension

Physics Letters B
Recently, Dark Energy Spectroscopic Instrument (DESI) collaboration based on their first year data has reported a  ≳ 3σ evidence for an evolving dark energy (DE) against the cosmological constant (CC), so the standard ΛCDM model. However, it is necessary
Hao Wang, Yun-Song Piao
doaj   +1 more source

A Bayesian Analysis of the Hubble Tension

This paper conducts a Bayesian analysis of the Hubble tension, which addresses the discrepancy between local measurements of the Hubble Constant H0 and the value predicted by the ΛCDM model based on Cosmic Microwave Background data.
Vincenzo Fano, Marco Sanchioni
core   +1 more source

Cascading Dark Energy

The Astrophysical Journal
The standard cosmological model is in the midst of a stress test, thanks to the tension between supernova-based measurements of the Hubble constant H _0 and inferences of its values from cosmic microwave background (CMB) anisotropies.
Kazem Rezazadeh, Amjad Ashoorioon, Daniel Grin   +2 more
doaj   +1 more source

Primordial magnetic fields and the Hubble tension

, 2023
Magnetic fields appear to be present in essentially all astrophysical environments, including galaxies, clusters of galaxies and voids. There are both observational and theoretical motives for considering the possibility of their origin tracing back to ...
Jedamzik, Karsten, Pogosian, Levon
core  

Hubble-constant and -mass determination of Centaurus A and M83 from tip-of-red-giant-branch distances

Astronomy & Astrophysics
An independent determination of the Hubble constant is crucial in light of the persistent tension between early- and late-Universe measurements. In this study, we analysed the dynamics of the Centaurus A (CenA) and M83 galaxies, along with their ...
Faucher Adrian, Benisty David, Mota David F.   +2 more
doaj   +1 more source

Hubble tension and small-scale inhomogeneities on light propagation

Astronomy & Astrophysics
Context. A major observational challenge within the standard cosmological framework is the Hubble tension, a statistically significant (∼5σ) disagreement between the Hubble constant derived from cosmic microwave background measurements and the value ...
Kraiselburd L., Pigozzo C., Landau S. J., Alcaniz J.   +3 more
doaj   +1 more source

Observational constraints on a spinor field generalized Chaplygin gas model in a spherically symmetric FLRW spacetime

European Physical Journal C: Particles and Fields
Despite the remarkable success of the standard $$\Lambda $$ Λ CDM model in describing the evolution of the universe, several unresolved issues remain, such as the true nature of dark energy, fine-tuning problems, and the persistent Hubble tension ...
Mahendra Goray, Bijan Saha
doaj   +1 more source