Results 71 to 80 of about 1,848 (175)

Cosmology Due to Thermodynamics of Apparent Horizon

Annalen der Physik, Volume 537, Issue 11, November 2025.
Effective cosmological constant as a function of the Hubble rate H for different entropy parameters b. Figure shows the asymptotic of the effective cosmological constant. At H = 0 the effective cosmological constant vanishes. Abstract This study proposes new entropy of the apparent horizon Sh=(1/β)arctan(βSBH)$S_h=(1/\beta)\arctan (\beta S_{BH ...
S. I. Kruglov
wiley   +1 more source

Varying Fundamental Constants Meet Hubble

Invited chapter for the edited book "The Hubble Constant Tension" (Eds. E. Di Valentino and D. Brout, Springer Singapore, expected in 2024); 20 pages + references, 11 figures, any comments welcome!
Chluba, Jens, Hart, Luke
openaire   +2 more sources

First Detection of [SI] in Near‐IR JWST Observations of Io in Eclipse, and Comparison With SO Emissions, Evolving Volcanic Eruptions, and Prior UV HST‐STIS [SI] Emissions

Journal of Geophysical Research: Planets, Volume 130, Issue 11, November 2025.
Abstract We observed Io with the James Webb Space Telescope (JWST) NIRSpec/Integral Field Unit (1.0–5.3 μm, R∼2700 $R\sim 2700$) in August 2023 while the satellite was in eclipse. Thermal emission from Kanehekili Fluctus is consistent with the cooling of lava flows after a vigorous eruption in November 2022.
Imke de Pater, Darrell F. Strobel, Ashley Gerard Davies, Joachim Saur, Lorenz Roth, Katherine de Kleer, Emmanuel Lellouch, Zachariah Milby, Carl Schmidt, Thierry Fouchet, Michael H. Wong, Leigh N. Fletcher, Jake Harkett, Michael Roman, Richard J. Cartwright, Jason E. Perry, Julie Renaud‐Kim, Carolyn Jordan, Stephan Schlegel, David A. Williams, David M. Nelson   +20 more
wiley   +1 more source

Hints of New Physics for the Hubble Tension: Violation of Cosmological Principle

The Astrophysical Journal Letters
Discrepancy between the measurements of Hubble constant H _0 from the cosmic microwave background and the local distance ladder is the most serious challenge to the standard ΛCDM model.
J. P. Hu, X. D. Jia, J. Hu, F. Y. Wang
doaj   +1 more source

Determining Cosmological-model-independent H 0 with Gravitationally Lensed Supernova Refsdal

The Astrophysical Journal
The reappearance of supernova Refsdal with detailed modeling of the lens cluster allows us to measure the time-delay distance, which serves as a powerful tool to determine the Hubble constant ( H _0 ).
Xiaolei Li, Kai Liao
doaj   +1 more source

Can Inflation Resolve the Hubble Tension?

Universe
In this work, we investigate how a change in the sound horizon due to inflation may affect the value of H0. Performing an analysis using the measurements of BAO, SN Ia, H(z), CMB, and the local H0, we show that the modification in the sound horizon ...
Ione A. Silva, Edésio M. Barboza
doaj   +1 more source

A nuclear data approach for the Hubble constant measurements

EPJ Web of Conferences, 2017
An extraordinary number of Hubble constant measurements challenges physicists with selection of the best numerical value. The standard U.S. Nuclear Data Program (USNDP) codes and procedures have been applied to resolve this issue.
Pritychenko Boris
doaj   +1 more source

The Hubble constant troubled by dark matter in non-standard cosmologies. [PDF]

Sci Rep, 2022
Alcaniz JS, Neto JP, Queiroz FS, da Silva DR, Silva R, Silva R.   +5 more
europepmc   +1 more source

Author Correction: The Hubble constant troubled by dark matter in non-standard cosmologies. [PDF]

Sci Rep, 2023
Alcaniz JS, Neto JP, Queiroz FS, da Silva DR, Silva R.   +4 more
europepmc   +1 more source

Blinded Mock Data Challenge for Gravitational-wave Cosmology. I. Assessing the Robustness of Methods Using Binary Black Hole Mass Spectrum

The Astrophysical Journal
Gravitational wave sources are standard sirens that provide an independent way to map the cosmic expansion history by combining with an independent redshift measurement, either from an electromagnetic counterpart for a bright siren or using different ...
Aman Agarwal, Ulyana Dupletsa, Konstantin Leyde, Suvodip Mukherjee, Benot Revenu, Juan Esteban Rivera, Antonio Enea Romano, Mohit Raj Sah, Sergio Vallejo-Peña, Adrian Avendano, Freija Beirnaert, Gergely Dalya, Miguel Cifuentes Espitia, Christos Karathanasis, Santiago Moreno- Gonzalez, Lucas Quiceno, Federico Stachurski, Juan Garcia-Bellido, Rachel Gray, Nicola Tamanini, Cezary Turski   +20 more
doaj   +1 more source