Unifying all mass discrepancies with one effective gravity law?

Zhao, Hongsheng; Famaey, Benoît

doi:10.1103/physrevd.86.067301

Cited by 43 publications

(44 citation statements)

References 24 publications

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“…Sanders 2003). One possible solution is Extended MOND (EMOND, Zhao & Famaey 2012) which posits that the acceleration scale a 0 increases with the potential depth |Φ| such that it has the standard value of 1.2 × 10 −10 m/s 2 for |Φ| Φ0 but is larger in regions with a deeper potential, such as galaxy clusters. So far, this appears to be a promising way to resolve the difficulties typically faced by MOND in such systems (Hodson & Zhao 2017).…”

Section: Discussionmentioning

confidence: 99%

The escape velocity curve of the Milky Way in modified Newtonian dynamics

Banik

Zhao

2017

Monthly Notices of the Royal Astronomical Society

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We determine the escape velocity from the Milky Way (MW) at a range of Galactocentric radii in the context of Modified Newtonian Dynamics (MOND). Due to its non-linear nature, escape is possible if the MW is considered embedded in a constant external gravitational field (EF) from distant objects. We model this situation using a fully self-consistent method based on a direct solution of the governing equations out to several thousand disk scale lengths. We try out a range of EF strengths and mass models for the MW in an attempt to match the escape velocity measurements of Williams et al. (2017).A reasonable match is found if the EF on the MW is ∼ 0.03a 0 , towards the higher end of the range considered. Our models include a hot gas corona surrounding the MW, but our results suggest that this should have a very low mass of ∼ 2 × 10 10 M to avoid pushing the escape velocity too high. Our analysis favours a slightly lower baryonic disk mass than the ∼ 7 × 10 10 M required to explain its rotation curve in MOND. However, given the uncertainties, MOND is consistent with both the locally measured amplitude of the MW rotation curve and its escape velocity over Galactocentric distances of 8−50 kpc.

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Section: Discussionmentioning

confidence: 99%

The escape velocity curve of the Milky Way in modified Newtonian dynamics

Banik

Zhao

2017

Monthly Notices of the Royal Astronomical Society

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“…The maximum amplitude of A0 has been detected observationally as discussed in (Zhao and Famaey, 2012;Hodson and Zhao, 2017). By the way, Tully-Fisher relation normalization factor is limited to a maximum A0 as A0,m.…”

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confidence: 83%

“…Another assumption, it is massive neutrinos (Sanders, 2003;Angus et al, 2008). Bekenstein (2011) proposed that the Milgrom constant a0 is a monotonically increasing function of potential depth Which boosts the Milgrom MOND in galaxy clusters by a factor of a few, and Zhao and Famaey (2012) have proposed EMOND to resolve the puzzle of clusters by handy effective changes in the Migrom MOND as a generalized Milgrom constant…”

Section: The Discrepancy By External and Internal Field Effects And Tully-fisher Relation Discrepancy In Context Of The Observable Mattermentioning

confidence: 99%

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Explosion of the Science Modification of Newtonian Dynamics Via Mach’s Inertia Principle and Generalization in Gravitational Quantum Bound Systems and Finite Range of the Gravity-Carriers, Consistent Merely On the Bosons and the Fermions

Lutephy

2020

Physics International

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Newtonian gravity is modified here via Mach's inertia principle (inertia fully governed by universe) and it is generalized to gravitationally quantum bound systems, resulting scale invariant fully relational dynamics (mere ordering upon actual objects), answering to rotation curves and velocity dispersions of the galaxies and clusters (large scale quantum bound systems), successful in all dimensions and scales from particle to the universe. Against the Milgrom's theory, no fundamental acceleration to separate the physical systems to the low and large accelerations, on the contrary the Newtonian regime of HSB galaxies sourced by natural inertia constancy there. All phenomenological paradigms are argued here via Machian modified gravity generalized to quantum gravity, especially Milgrom empirical paradigms and even we have resolved the mystery of missing dark matter in newly discovered Ultra Diffuse Galaxies (UDGs) for potential hollow in host galaxy generated by sub quantum bound system of the globular clusters. Also we see that the strong nuclear force (Yukawa force) is in reality, the enhanced gravity for limitation of the gravitational potential because finite-range of the Compton wavelength of hadronic gravity-carriers in the nucleuses, reasoning to resolve ultimately, one of the biggest questions in the physics, that is, so called the fine structure constant and answering to mysterious saturation features of the nuclear forces and we have resolved also the mystery of the proton stability, reasonable as a quantum micro black hole and the exact calculation of the universe matter. Tully-Fisher and Fabor-Jackson relations and Fish's and Freeman's laws of the constant central gravitational potential and universalization of Baryonic Fish's law are next paradigms argued here. We don't play with mathematical functions to set them with empirical results and we don't simulate the models but the Newton's empirical gravity is returned to its fundamental face logically.

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“…One recent proposal goes under the name of Extended MOND or EMOND (Zhao & Famaey, 2012). The idea is to make the MOND acceleration scale a 0 a function of the gravitational potential A 0 (F) so as to be able to retrieve higher accelerations for galaxy clusters within EMOND.…”

Section: The Upscaling Problemmentioning

confidence: 99%

Three problems about multi-scale modelling in cosmology

Massimi

2018

Studies in History and Philosophy of Science Part B: Studies in

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Unifying all mass discrepancies with one effective gravity law?

Cited by 43 publications

References 24 publications

The escape velocity curve of the Milky Way in modified Newtonian dynamics

The escape velocity curve of the Milky Way in modified Newtonian dynamics

Explosion of the Science Modification of Newtonian Dynamics Via Mach’s Inertia Principle and Generalization in Gravitational Quantum Bound Systems and Finite Range of the Gravity-Carriers, Consistent Merely On the Bosons and the Fermions

Three problems about multi-scale modelling in cosmology

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