Results 51 to 60 of about 322,153 (182)

Study of Anisotropic Fluid Distributed Hyperbolically in f(R,T,Q) Gravity

open access: yesUniverse, 2022
The core of this manuscript is to conduct a broad investigation into the features of static matter configurations with hyperbolical symmetry, which might possibly serve as formation of corresponding spacetime within the limits of f(R,T,Q) gravity, where (
Hamna Asad, Zeeshan Yousaf
doaj   +1 more source

Planck Quantization of Newton and Einstein Gravitation

open access: yes, 2016
In this paper we rewrite the gravitational constant based on its relationship with the Planck length and based on this, we rewrite the Planck mass in a slightly different form (that gives exactly the same value).
E. Haug
semanticscholar   +1 more source

Radar time delays in the dynamic theory of gravity [PDF]

open access: yesSerbian Astronomical Journal, 2004
There is a new theory gravity called the dynamic theory, which is derived from thermodynamic principles in a five dimensional space, radar signals traveling times and delays are calculated for the major planets in the solar system, and compared to those ...
Haranas I.I.
doaj   +1 more source

Gravitational grating [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2018
9 pages, 6 ...
openaire   +2 more sources

5D World-Universe Model. Gravitation

open access: yes, 2016
5D World-Universe Model is based on the decisive role of the Medium of the World composed of massive particles: protons, electrons, photons, neutrinos, and dark matter particles.
Vladimir S. Netchitailo
semanticscholar   +1 more source

Gravitating fluxbranes [PDF]

open access: yesPhysical Review D, 2001
We consider the effect that gravity has when one tries to set up a constant background form field. We find that in analogy with the Melvin solution, where magnetic field lines self-gravitate to form a flux-tube, the self-gravity of the form field creates fluxbranes.
openaire   +2 more sources

An Objective Classification Scheme for Solar-System Bodies Based on Surface Gravity

open access: yesGalaxies
We introduce succinct and objective definitions of the various classes of objects in the solar system. Unlike the formal definitions adopted by the International Astronomical Union in 2006, group separation is obtained from measured physical properties ...
Dimitris M. Christodoulou   +2 more
doaj   +1 more source

Formation and Clustering of Primordial Black Holes in Brans-Dicke Theory

open access: yesUniverse, 2020
The formation of primordial black holes in the early universe in the Brans-Dicke scalar-tensor theory of gravity is investigated. Corrections to the threshold value of density perturbations are found.
Victor Berezin   +3 more
doaj   +1 more source

Gravitational Viscoelastodynamics

open access: yesActa Geodaetica et Geophysica Hungarica, 2002
We consider a compositionally and entropically stratified, compressible, rotating fluid earth and study gravitational-viscoelastic perturbations of its hydrostatic initial state. Using the Lagrangian representation and assuming infinitesimal perturbations, we deduce the incremental field equations and interface conditions of {\em gravitational ...
openaire   +6 more sources

Cancer Studies under Space Conditions: Finding Answers Abroad

open access: yesBiomedicines, 2021
In this review article, we discuss the current state of knowledge in cancer research under real and simulated microgravity conditions and point out further research directions in this field. Outer space is an extremely hostile environment for human life,
José Luis Cortés-Sánchez   +8 more
doaj   +1 more source

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