Results 101 to 110 of about 400,960 (288)
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
A gauge-invariant analysis of magnetic fields in general-relativistic cosmology [PDF]
, 1997 We provide a fully general-relativistic treatment of cosmological perturbations in a universe permeated by a large-scale primordial magnetic field using the Ellis - Bruni gauge-invariant formalism.
C. Tsagas, J. Barrow
semanticscholar +1 more source
A Comparison of Modeled and Observed Dayside Bow Shock Locations in 8 Years of MMS Data
Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.Abstract The interplay between Earth's magnetic field and the solar wind provides a natural laboratory to study the physics of shock waves in collisionless plasmas. 3D parameterized shape models of Earth's bow shock boundary quantify how this interaction depends on upstream solar wind parameters.
Wenli Mo +4 more
wiley +1 more source
The Solar Wind Interaction With an Orbiting Venus
Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.Abstract Studies of the large‐scale interaction of the solar wind with planets have often been considered along the line of the sun to the planet, neglecting the planet's orbital motion. This paper describes a new refinement in the long history of Venus simulations, the addition of the planet's orbital motion.
Stephen H. Brecht, Stephen A. Ledvina
wiley +1 more source
Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.Abstract The production, attenuation, and absorption of secondary cosmic rays (SCR) are influenced by atmospheric parameters such as air pressure and temperature. To reliably correlate SCR flux measurements with atmospheric ionization driven by energetic particle precipitation, these dependencies must be quantified.
A. Al‐Qaaod +11 more
wiley +1 more source
Principle of «Observability»: Why Cannot the Theory of the Infinite Universe be Realized?
RUDN Journal of Philosophy, 2009 The present work demonstrates that all cosmological theories obey an epistemological relation: all steps cosmology makes in the direction of acquiring the status of a natural science are inversely proportional to its steps in the direction of allowing ...
A N Pavlenko
doaj
What Is Temperature? Modern Outlook on the Concept of Temperature
Entropy, 2020 The meaning and evolution of the notion of “temperature” (which is a key concept for the condensed and gaseous matter theories) are addressed from different points of view.
Edward Bormashenko
doaj +1 more source
Three-dimensional non-relativistic extended supergravity with cosmological constant [PDF]
, 2020 Patrick Concha +5 more
openalex +1 more source
The Astrophysical JournalAn analysis of the cosmological constant Ω _Λ fitted to subsamples of the Pantheon+ Type Ia supernova sample spanning 2 π steradians for a grid of 432 pole positions covering the whole sky reveals two large-scale asymmetries.
Alejandro Clocchiatti +3 more
doaj +1 more source
Cosmological comoving behavior of the configurational entropy
Physics Letters B, 2019 It has been shown that a functional dependence of the configurational entropy (CE) density exhibits a cosmological comoving behavior related to the scale parameter, a, of the FRW flat universe.
A.E. Bernardini, R. da Rocha
doaj +1 more source