Results 21 to 30 of about 4,727,160 (263)
Modified Newtonian dynamics at all astrophysical scales [PDF]
, 2008 In this thesis I test the modified Newtonian dynamics as an alternative to the cold dark matter hypothesis. In the Milky Way, I show that the dynamics of the dwarf galaxies are well described by the paradigm and I confirm its distant low surface ...
Angus, Garry W.
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A DERIVATION OF MODIFIED NEWTONIAN DYNAMICS [PDF]
Journal of The Korean Astronomical Society, 2013 4 pages, 1 figure; to appear in JKAS (received 2013 February 14; revised 2013 March 22; accepted 2013 March 28)
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Modified Newtonian dynamics and non-relativistic ChSAS gravity
Physics Letters B, 2018 In the context of the non-relativistic theories, a generalization of the Chern–Weil-theorem allows us to show that extended Chern–Simons actions for gravity in d=4 invariant under some specific non-relativistic groups lead to modified Poisson equations ...
G. Rubio, P. Salgado
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Non-relativistic gravity theories in four spacetime dimensions
Journal 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
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SPHERICAL COLLAPSE IN MODIFIED NEWTONIAN DYNAMICS [PDF]
The Astrophysical Journal, 2009 23 pages, 7 figures, ApJ ...
Malekjani, M., Rahvar, S., Haghi, H.
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Physics 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
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Quadratic gravity potentials in de Sitter spacetime from Feynman diagrams
Journal of High Energy Physics, 2023 We employ a manifestly covariant formalism to compute the tree-level amputated Green’s function of non-minimally coupled scalar fields in quadratic gravity in a de Sitter background.
Renata Ferrero, Chris Ripken
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GravitoMagnetic force in modified Newtonian dynamics [PDF]
Journal of Cosmology and Astroparticle Physics, 2013 We introduce the Gauge Vector-Tensor (GVT) theory by extending the AQUAL's approach to the GravitoElectroMagnetism (GEM) approximation of gravity. GVT is a generally covariant theory of gravity composed of a pseudo Riemannian metric and two U(1) gauge connections that reproduces MOND in the limit of very weak gravitational fields while remains ...
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Testing modified Newtonian dynamics in the Milky Way [PDF]
Physical Review D, 2015 Modified Newtonian dynamics (MOND) is an empirical theory originally proposed to explain the rotation curves of spiral galaxies by modifying the gravitational acceleration, rather than by invoking dark matter. Here,we set constraints on MOND using an up-to-date compilation of kinematic tracers of the Milky Way and a comprehensive collection of ...
Iocco F., Pato M., Bertone G.
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Modified inertia from extended uncertainty principle(s) and its relation to MoND
European Physical Journal C: Particles and Fields, 2020 In this paper we show that Modified Inertia, i.e., the modification of inertia predicted by some alternative theories of gravity at cosmic scales, can be naturally derived within the framework of the extended uncertainty principle (EUP). Specifically, we
Jaume Giné, Giuseppe Gaetano Luciano
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