Results 41 to 50 of about 1,242,731 (210)
Uncorrelated velocity and size residuals across galaxy rotation curves [PDF]
, 2019 The mass–velocity–size relation of late-type galaxies decouples into independent correlations between mass and velocity (the Tully–Fisher relation), and between mass and size.
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Conformally-rescaled Schwarzschild metrics do not predict flat galaxy rotation curves
European Physical Journal C: Particles and Fields, 2022 For conformally invariant gravity theories defined on Riemannian spacetime and having the Schwarzschild–de-Sitter (SdS) metric as a solution in the Einstein gauge, we consider whether one may conformally rescale this solution to obtain flat rotation ...
Michael Hobson, Anthony Lasenby
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A Cautionary Tale in Fitting Galaxy Rotation Curves with Bayesian Techniques: Does Newton\u27s Constant Vary from Galaxy to Galaxy? [PDF]
, 2021 The application of Bayesian techniques to astronomical data is generally non-trivial because the fitting parameters can be strongly degenerated and the formal uncertainties are themselves uncertain. An example is provided by the contradictory claims over
McGaugh, Stacy, Li, Pengfei
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Galaxy rotation curves and preferred reference frame effects
European Physical Journal C: Particles and Fields, 2019 As an alternative to dark matter models we use generalized Jordan–Brans–Dicke scalar–vector–tensor (JBD-SVT) gravity model to study the behavior of the rotational velocities of test particles moving around galaxies.
Hossein Ghaffarnejad, Razieh Dehghani
doaj +1 more source
The universal rotation curve of dwarf disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2016 We use the concept of the spiral rotation curves universality to investigate the luminous and dark matter properties of the dwarf disc galaxies in the local volume (size $\sim11$ Mpc). Our sample includes 36 objects with rotation curves carefully selected from the literature.
Karukes E. V., Salucci P.
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, 2014 Galaxy masses play a fundamental role in our understanding of structure formation models. This review addresses the variety and reliability of mass estimators that pertain to stars, gas, and dark matter.
Courteau, Stephane +10 more
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Rotation curves of galaxies by fourth order gravity [PDF]
Physical Review D, 2011 We investigate the radial behavior of galactic rotation curves by a Fourth Order Gravity adding also the Dark Matter component. The Fourth Order Gravity is a Lagrangian containing the Ricci scalar, the Ricci and Riemann tensor, but the rotation curves are depending only on two free parameters.
Stabile, A., Scelza, G.
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Rotation curves of galaxies in GR
, 2023 It has been suggested that the observed flat rotation curves of disk galaxies can be a peculiar effect of General Relativity (GR) rather than evidence for the presence of dark matter (DM) halos in Newtonian gravity. In Ciotti (2022) the problem has been quantitatively addressed by using the well known weak-field, low-velocity gravitomagnetic limit of ...
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The unexpected diversity of dwarf galaxy rotation curves [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 17 pages, 6 figures, 2 tables, MNRAS ...
Oman, K.A. +11 more
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Effects of spacetime anisotropy on the galaxy rotation curves
, 2013 The observations on galaxy rotation curves show significant discrepancies from the Newtonian theory. This issue could be explained by the effect of the anisotropy of the spacetime.
Xin Li +4 more
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