Results 61 to 70 of about 546,296 (162)

Decaying Dark Matter and the Hubble Tension

, 2023
Decaying dark matter models generically modify the equation of state around the time of dark matter decay, and this in turn modifies the expansion rate of the Universe through the Friedmann equation.
Nygaard, Andreas, Tram, Thomas, Holm, Emil Brinch, Hannestad, Steen   +3 more
core  

Structure of Jupiter's High‐Latitude Storms: Folded Filamentary Regions Revealed by Juno

Journal of Geophysical Research: Planets, Volume 131, Issue 1, January 2026.
Abstract Sprawling, turbulent cloud formations dominate the meteorology of Jupiter's mid‐to‐high latitudes, known as Folded Filamentary Regions (FFRs). A multi‐wavelength characterization by Juno reveals the spatial distribution, vertical structure, and energetics of the FFRs.
L. N. Fletcher, Z. Zhang, S. Brown, F. A. Oyafuso, J. H. Rogers, M. H. Wong, A. Mura, G. Eichstädt, G. S. Orton, S. Brueshaber, R. Sankar, C. Li, S. M. Levin, F. Biagiotti, T. Guillot, A. P. Ingersoll, D. Grassi, C. J. Hansen, S. Bolton, J. H. Waite   +19 more
wiley   +1 more source

The Hubble Constant from Blue Type Ia Supernovae

The Astrophysical Journal
There is a persistent tension of about 5 σ –6 σ between the value of the Hubble constant, as derived from the local distance ladder versus the cosmic microwave background, signaling either unaccounted for systematics in the measurements or “new physics,”
Christa Gall, Luca Izzo, Radosław Wojtak, Jens Hjorth   +3 more
doaj   +1 more source

A Fundamental Solution of the Hubble Tension

Foundations
Einstein derived the expansion of space ever since the Big Bang started and introduced the possible cosmological constant Λ. The expansion of space and the present-day expansion rate H0, the Hubble constant, has been discovered by Hubble.
Hans-Otto Carmesin
doaj   +1 more source

Dynamical Dark Sector: A Joint Two‐Scalar‐Field Model for Dark Matter and Quintessence

Advances in Astronomy, Volume 2026, Issue 1, 2026.
The physical nature of dark matter and dark energy remains one of the most pressing questions in modern cosmology. This work presents a phenomenological model where the entire dark sector is described by two minimally coupled scalar fields within general relativity.
Silvio A. Corrêa Junior, Jianguo Yan
wiley   +1 more source

Gravitational Time Potential Energy

Advances in Astronomy, Volume 2026, Issue 1, 2026.
We extend the Einstein equivalence principle via a supplementary local energy equivalence postulate and propose the gravitational time potential energy (GTP) framework: a time‐dimensional scalar potential accumulating continuously with the proper duration of gravitational action. This framework may provide a potential classical interpretation for alpha
Ne Allen, Mohammad Rezwan Habib
wiley   +1 more source

Resolving the Hubble tension with Early Dark Energy [PDF]

, 2023
Verschiedene Messungen der Hubble-Konstante, einem Maß für die Ausdehnungsgeschwindigkeit des Universums, ergeben abweichendeWerte. Kann diese Diskrepanz – bekannt als “Hubble-Tension” – nicht durch systematische Fehler in den Messungen erklärt werden ...
Herold, Laura
core   +1 more source

The Hubble tension: Relativistic dark matter production from long-lived particles

Nuclear Physics B
The tension between direct measurements of the Hubble constant and those stemming from Cosmic Microwave Background probes has triggered a multitude of studies.
Alvaro S. de Jesus, Matheus M.A. Paixão, Dêivid R. da Silva, Farinaldo S. Queiroz, Nelson Pinto-Neto   +4 more
doaj   +1 more source

Hubble tension and dark electromagnetism

, 2021
We begin by discussing the essential concepts within the standard cosmology where the dark matter is "cold" and collisionless. We consider the structure formation in the dark matter component and present problems faced by the standard cosmology as well
Polus, Aku
core  

Information Dark Energy Can Resolve the Hubble Tension and Is Falsifiable by Experiment. [PDF]

Entropy (Basel), 2022
Gough MP.
europepmc   +1 more source