Results 1 to 10 of about 243,756 (306)

Toward inference of overlapping gravitational-wave signals [PDF]

, 2022
Elia Pizzati, S. Sachdev, Anuradha Gupta, B. S. Sathyaprakash   +3 more
openalex   +1 more source

Routing in multi-sink sensor networks based on gravitation field

Tongxin xuebao, 2008
The process of data forwarding in sensor networks was analogy to electric charge moving in electrostatic field. By this analogy, a method which abstracted a sensor networks to a Gravitation Field was proposed.
doaj   +2 more sources

Modified model of Newtonian gravitation.

Тонкие химические технологии, 2011
Within the limits of the classical mechanics for planets of the Solar system a new form of gravitational potential is suggested. The following effects are considered: perihelion advance of the planets, deviation of light beams in the field of the Sun ...
E. Kh. Nasretdinova, E. S. Savin
doaj  

Satellite Galaxy Velocity Dispersions in the SDSS and Modified Gravity Models

Galaxies, 2014
The Sloan Digital Sky Survey (SDSS) provides data on several hundred thousand galaxies. The precise location of these galaxies in the sky, along with information about their luminosities and line-of-sight (Doppler) velocities, allows one to construct a ...
John W. Moffat, Viktor T. Toth
doaj   +1 more source

Extended Theories of Gravitation

EPJ Web of Conferences, 2013
Extended theories of gravitation are naturally singled out by an analysis inspired by the Ehelers-Pirani-Schild framework. In this framework the structure of spacetime is described by a Weyl geometry which is enforced by dynamics.
Fatibene Lorenzo, Ferraris Marco, Francaviglia Mauro, Magnano Guido   +3 more
doaj   +1 more source

Lower-order zonal gravitational coefficients caused by zonal circulations inside gaseous planets: Convective flows and numerical comparison between modeling approaches

Earth and Planetary Physics, 2020
To infer the internal equilibrium structure of a gaseous planet, especially the equation of state (EOS) and size of its inner core, requires accurate determination of lower-order zonal gravitational coefficients.
DaLi Kong, KeKe Zhang
doaj   +1 more source

What if Newton’s Gravitational Constant Was Negative?

Galaxies, 2019
In this work, we seek a cosmological mechanism that may define the sign of the effective gravitational coupling constant, G. To this end, we consider general scalar-tensor gravity theories as they provide the field theory natural framework for the ...
Ismael Ayuso, José P. Mimoso, Nelson J. Nunes   +2 more
doaj   +1 more source

Teoria quântica da gravitação: cordas e teoria M

Revista Brasileira de Ensino de Física
Discutimos aqui a junção da relatividade geral e da mecânica quântica como necessidade tanto teórica quanto experimental da Física, e suas conseqüências na compreensão do Universo, de seu início e sua evolução.
Elcio Abdalla
doaj   +1 more source

Modeling the Rising Tails of Galaxy Rotation Curves

Galaxies, 2019
It is well known, but under-appreciated in astrophysical applications, that it is possible for gravity to take on a life of its own in the form of Weyl-curvature-only metrics (note that we are referring to the Weyl-only solutions of ordinary General ...
Fan Zhang
doaj   +1 more source

Mie's Theories of Matter and Gravitation [PDF]

, 2007
Unifying physics by describing a variety of interactions – or even all interactions – within a common framework has long been an alluring goal for physicists. One of the most ambitious attempts at unification was made in the 1910s by Gustav Mie.
Smeenk, Chris
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