Results 51 to 60 of about 114,518 (203)
On the measurement of the Hubble constant in a local low-density universe [PDF]
, 1994 Astrophysical observations indicate that the ``Local Universe" has a relatively lower matter density ($\Omega_0$) than the predictions of the standard inflation cosmology and the large-scale motions of galaxies which provide a mean mass density to be ...
Bo Qin +6 more
core +2 more sources
Price of shifting the Hubble constant [PDF]
Physical Review D, 2018 33 pages, 25 PDF ...
Evslin, Jarah, Sen, Anjan A, Ruchika
openaire +2 more sources
A Possible Solution to the Mystery of the ANITA Anomalous Events
Annalen der Physik, Volume 538, Issue 4, April 2026.In 2006 and 2014, the Antarctic Impulsive Transient Antenna (ANITA), a balloon‐borne radio observatory flying over Antarctica, detected two strange upward‐going radio pulse events that have not yet been explained by our current understanding of physics.
Massimo Villata
wiley +1 more source
The Hubble Constant from Blue Type Ia Supernovae
The Astrophysical JournalThere 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 +3 more
doaj +1 more source
Simple quantum cosmology: Vacuum energy and initial state
, 2005 A static non-singular 10-dimensional closed Friedmann universe of Planck size, filled with a perfect fluid with an equation of state with w = -2/3, can arise spontaneously by a quantum fluctuation from nothing in 11-dimensional spacetime.
D. Spergel +8 more
core +2 more sources
, 2022 Article de publication proposant une explication de la tension sur la constante de Hubble partir du mod le d'Univers imagin dans le Mod le des Aions : Site ...
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Redshift in Hubble's constant [PDF]
International Journal of Theoretical Physics, 1997 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +2 more sources
Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
The Global Hubble Constant [PDF]
Australian Journal of Physics, 1990 A review of large-scale investigations of the determination of H is presented. The infrared period-luminosity relation of Cepheids gives distances accurate to -2% to nearby galaxies. Based on the distances of M31, MH, N300 and N2403, a DM of 31 ·30 ±O· 20 has been derived to the nearby Virgo cluster from the TF relation of spirals at four wavebands ...
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Kaniadakis Holographic Dark Energy Behavior in f(Q) Theory
Fortschritte der Physik, Volume 74, Issue 4, April 2026.ABSTRACT In this study, the cosmological behavior of the Kaniadakis holographic dark energy model is investigated under the f(Q)$f(Q)$ theory within the framework of a flat Friedmann–Robertson–Walker (FRW) universe. The generalized holographic energy density based on Kaniadakis entropy is modeled using the Hubble horizon infrared cutoff scale, and the ...
Sinem Kalkan, Can Aktaş
wiley +1 more source