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相关论文: MOND effects in the inner solar system

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We point out an interesting theoretical prediction for elliptical galaxies residing inside galaxy clusters in the framework of modified Newtonian dynamics (MOND), that could be used to test this paradigm. Apart from the central brightest…

宇宙学与河外天体物理 · 物理学 2015-05-19 Xufen Wu , HongSheng Zhao , Benoit Famaey

The ultra-diffuse dwarf galaxy NGC 1052-DF2 (DF2) has ten (eleven) measured globular clusters (GCs) with a line-of-sight velocity dispersion of $\sigma=7.8^{+5.2}_{-2.2}\,$km/s ($\sigma=10.6^{+3.9}_{-2.3}\,$km/s). Our conventional…

The observed dynamics of gas and stars on galactic and larger scales cannot be accounted for by self-gravity, indicating that there are large quantities of unseen matter, or that gravity is non-Newtonian in these regimes. Milgrom's MOdified…

天体物理学 · 物理学 2019-08-17 Anthony Aguirre , Joop Schaye , Eliot Quataert

(doctoral thesis of Michal Bilek, finished on June 19, 2015) MOND is an observational rule for predicting the acceleration of stars and galaxies from the distribution of the visible matter. It possibly stems from a new law of physics. I…

星系天体物理 · 物理学 2016-01-07 Michal Bílek

A model based on simple assumptions about 4-dimensional space-time being closed and isotropic, and embedded in a 5th large-scale dimension, r, representing the radius of curvature of space-time, has been used in an application of Newton's…

广义相对论与量子宇宙学 · 物理学 2007-10-10 M. B. Gerrard , T. J. Sumner

A speculative mathematical model is used to generate the modified Newtonian dynamics called MOND from fluctuations of the number of quanta of quantized acceleration. The one new parameter can be chosen either to make the transition to…

天体物理学 · 物理学 2007-05-23 Thomas F. Jordan

Bimetric MOND (BIMOND) is used as a platform for variable-$G$ theories that have MOND-specific idiosyncrasies. E.g., MOND premises dictate return to standard dynamics in the high-acceleration limit, predicting the standard value of $G$ for…

宇宙学与河外天体物理 · 物理学 2026-03-09 Mordehai Milgrom

Modified Newtonian Dynamics (MOND) at low acceleration has been astonishingly powerful at explaining the flat rotation curve of galaxies and the relation between the baryonic content of the galaxies and their observed circular velocity,…

星系天体物理 · 物理学 2021-06-30 Mohammadtaher Safarzadeh , Abraham Loeb

The possibility that the apparent anomalous acceleration of the Pioneer 10 and 11 spacecraft may be due, at least in part, to a chameleon field effect is examined. A small spacecraft, with no thin shell, can have a more pronounced anomalous…

广义相对论与量子宇宙学 · 物理学 2012-07-24 John D. Anderson , J. R. Morris

The self-binding energy and stability of a galaxy in MOND-based gravity are curiously decreasing functions of its center of mass acceleration towards neighbouring mass concentrations. A tentative indication of this breaking of the Strong…

天体物理学 · 物理学 2009-11-13 Xufen Wu , HongSheng Zhao , Benoit Famaey , G. Gentile , O. Tiret , F. Combes , G. W. Angus , A. C. Robin

A new formulation of MOND as a modified-potential theory of gravity is propounded. In effect, the theory dictates that the MOND potential phi produced by a mass distribution rho is a solution of the Poisson equation for the modified source…

宇宙学与河外天体物理 · 物理学 2014-11-20 Mordehai Milgrom

McGaugh et al. (2016) have used their extensive SPARC sample to update the well-known mass-discrepancy-acceleration relation (MDAR), which is one of the major predicted "MOND laws". This is not a newly discovered relation. Rather, it…

星系天体物理 · 物理学 2016-10-10 Mordehai Milgrom

The conjecture is considered that every body induces the wave field which imposes oscillations on the gravitational potential of a body. The function for oscillations is chosen to prevent the gravitational collapse of the matter at the…

综合物理 · 物理学 2007-05-23 D. L. Khokhlov

We study a general relativistic gravitomagnetic 3-body effect induced by the spin angular momentum ${\boldsymbol S}_\textrm{X}$ of a rotating mass $M_\textrm{X}$ orbited at distance $r_\textrm{X}$ by a local gravitationally bound restricted…

广义相对论与量子宇宙学 · 物理学 2019-06-18 Lorenzo Iorio

Modified Newtonian Dynamics (MOND) is a possible solution for the missing mass problem in galactic dynamics; its predictions are in good agreement with observations in the limit of weak accelerations. However, MOND does not derive from a…

星系天体物理 · 物理学 2017-01-18 Sascha Trippe

We investigate particle laws of motion derived from nonstandard kinetic actions of a special form. We are guided by a phenomenological scheme--the modified dynamics (MOND)--that imputes the mass discrepancy observed in galactic systems to a…

天体物理学 · 物理学 2008-11-26 M. Milgrom

I describe a heuristic model where MOND dynamics emerge in a universe viewed as a nearly spherical brane embedded in a higher-dimensional flat space. The brane, described by $\xi(\Omega)$, is of density $\sigma$ ($\xi$ and $\Omega$ are the…

广义相对论与量子宇宙学 · 物理学 2019-07-30 Mordehai Milgrom

A collection is made of presently unexplained phenomena within our Solar system and in the universe. These phenomena are (i) the Pioneer anomaly, (ii) the flyby anomaly, (iii) the increase of the Astronomical Unit, (iv) the quadrupole and…

广义相对论与量子宇宙学 · 物理学 2007-05-23 C. Lämmerzahl , O. Preuss , H. Dittus

The MOND limit is shown to follow from a requirement of space-time scale invariance of the equations of motion for nonrelativistic, purely gravitational systems; i.e., invariance of the equations of motion under (t,r) goes to (qt,qr), in…

天体物理学 · 物理学 2010-05-05 Mordehai Milgrom

We have recently discovered that the modified dynamics (MOND) implies some universal upper bound on the acceleration that can be contributed by a `dark halo'--assumed in a Newtonian analysis to account for the effects of MOND. Not…

天体物理学 · 物理学 2011-02-11 Rafael Brada , Mordehai Milgrom