Results 31 to 40 of about 71,616 (293)

Dynamical friction in modified Newtonian dynamics [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2008
Accepted for publication in MNRAS. 6 pages, 3 figures. Corrected typo in eq. (8), added panel to Fig. 1, added references and discussion.
NIPOTI, CARLO   +3 more
openaire   +4 more sources

Relativistic theory of the gravitation for Modified Newtonian Dynamics

open access: yesRevista de Investigación de Física, 2023
Modified Newtonian dynamics (MOND) is a hypothesis that proposes a modification of Newton's law of universal gravitation to account for observed properties of galaxies. This theory is an alternative to the hypothesis of dark matter in terms of explaining
Mississippi Valenzuela
doaj   +1 more source

Newtonian Fractional-Dimension Gravity and Galaxies without Dark Matter

open access: yesUniverse, 2023
We apply Newtonian fractional-dimension gravity (NFDG), an alternative gravitational model, to some notable cases of galaxies with little or no dark matter.
Gabriele U. Varieschi
doaj   +1 more source

Dissipationless Collapses in Modified Newtonian Dynamics [PDF]

open access: yesThe Astrophysical Journal, 2007
Dissipationless collapses in modified Newtonian dynamics (MOND) are studied by using a new particle-mesh N-body code based on our numerical MOND potential solver. We found that low surface density end products have shallower inner density profiles, flatter radial velocity dispersion profiles, and more radially anisotropic orbital distributions than ...
NIPOTI, CARLO   +2 more
openaire   +1 more source

Gravitational lensing and modified Newtonian dynamics [PDF]

open access: yes, 2001
Gravitational lensing is most often used as a tool to investigate the distribution of (dark) matter in the universe, but, if the mass distribution is known a priori, it becomes, at least in principle, a powerful probe of gravity itself.
Daniel J. Mortlock   +3 more
core   +8 more sources

A Severe Challenge to the Modified Newtonian Dynamics Phenomenology in Our Galaxy

open access: yesThe Astrophysical Journal, 2023
Modified Newtonian dynamics (MOND) is one of the most popular alternative theories of dark matter to explain the missing mass problem in galaxies. Although it remains controversial regarding MOND as a fundamental theory, MOND phenomenology has been shown
Man Ho Chan, Ka Chung Law
doaj   +1 more source

SPHERICAL COLLAPSE IN MODIFIED NEWTONIAN DYNAMICS [PDF]

open access: yesThe Astrophysical Journal, 2009
23 pages, 7 figures, ApJ ...
Malekjani, M., Rahvar, S., Haghi, H.
openaire   +2 more sources

Newtonian and modified newtonian gravitational simulation of spiral galaxies

open access: yesIraqi Journal of Physics, 2019
One of the most powerful tools for any stellar dynamics is the N-body simulation. In an N-body simulation the motion of N particles is followed under their mutual gravitational attraction.
Bushra A. Ahmed
doaj   +1 more source

Non-relativistic gravity theories in four spacetime dimensions

open access: yesJournal of High Energy Physics, 2023
In this work we present a non-relativistic gravity theory defined in four spacetime dimensions using the MacDowell-Mansouri geometrical formulation. We obtain a Newtonian gravity action which is constructed from the curvature of a Newton-Hooke version of
Patrick Concha   +2 more
doaj   +1 more source

MONDified gravity

open access: yesPhysics Letters B, 2023
A new class of modified gravity theories, made possible by subtle features of the canonical formulation of general covariance, naturally allows MOND-like behavior (MOdified Newtonian Dynamics) in effective space-time solutions without introducing new ...
Martin Bojowald, Erick I. Duque
doaj   +1 more source

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