Results 101 to 110 of about 320,186 (190)
Neighboring Galaxies' Influence on Rotation Curve Asymmetry [PDF]
arXiv, 2003 The rotation velocity asymmetry v observed in spiral galaxy HI rotation curves linearly correlates with the effective potential force from the 10 closest neighboring galaxies normalized for the test particle mass and the gravitational constant. The magnitude of the potential force from a close galaxy is proportional to the luminosity of the close ...
arxiv
The Survival of the Sagittarius Dwarf Galaxy and the Flatnessof the Rotation Curve of the Galaxy [PDF]
The Astrophysical Journal, 1998 How has the ``fluffy'' core of the Sgr dwarf galaxy survived multiple strong shocks from the tidal force of the Galactic halo and disc since the formation of the core a Hubble time ago? A scenario that Sgr was deflected to its current orbit by the Magellanic Clouds after a rendezvous on the north Galactic pole 2-3 Gyrs ago is examined. It is shown that
openaire +3 more sources
Extended HI Rotation Curve and Mass Distribution of M31
, 2006 New HI observations of Messier 31 (M31) obtained with the Effelsberg and Green Bank 100-m telescopes make it possible to measure the rotation curve of that galaxy out to ~35 kpc.
Begeman K. G. +19 more
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Galaxy rotation curves. The theory
, 2013 The non-gauge vector field with as simple as possible Lagrangian (\ref{Lagrangian}) turned out an adequate tool for macroscopic description of the main properties of dark matter. The dependence of the velocity of a star on the radius of the orbit $V\left(r\right) $ -- galaxy rotation curve -- is derived analytically from the first principles ...
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On the formation of galaxies with flat rotation curves
The Astrophysical Journal, 1986 The dynamical development of a gravitationally unstable, initially uniform, collision-free medium has been studied by means of fully self-consistent three-dimensional numerical experiments. The system is encouraged to form just one blob by means of a small density bump, and its collapse is followed until a steady state has been reached.
R. H. Miller, B. F. Smith
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The Luminous Convolution Model as an alternative to dark matter in spiral galaxies [PDF]
, 2014 The Luminous Convolution Model (LCM) demonstrates that it is possible to predict the rotation curves of spiral galaxies directly from estimates of the luminous matter.
Ashley, A. +8 more
core
General Relativistic Galaxy Rotation Curves: Implications for Dark Matter Distribution [PDF]
arXiv, 2006 It has recently been suggested that observed galaxy rotation curves can be accounted for by general relativity without recourse to dark-matter halos. Good fits have been produced to observed galatic rotation curves using this model. We show that the implied total mass is infinite, adding to the evidence opposing the hypothesis.
arxiv
Dark Matter, Dark Energy and Rotation Curves [PDF]
arXiv, 2007 Models for DM are invoked with various density distributions, to account for flat rotation curves of galaxies. The effect of DE on these profiles for large galaxies and clusters are also studied. The rotation curves are shown to dip at a particular distance, when the effect of DE became significant.
arxiv
Wavelet Analysis of Galactic Rotation Curves [PDF]
arXiv, 2011 The spatial wavelet spectra of 73 published spiral galaxies's rotation curves are computed and their associated scaleograms are presented. Scaleograms are used to detect and isolate local features observed in spiral galaxies's rotation curves. Although wiggles and bumps are usually interpreted as signs of recent and on-going merging, the analysis of ...
arxiv
The galactic rotation curve of a magnetized plasma cloud [PDF]
arXiv, 2018 The rotation curve of a magnetized plasma cloud orbiting in the gravitational potential of a galaxy is calculated by statistical arguments. The working assumption is that a mild magnetic field, decreasing with distance from the galactic center, permeates space. It is shown that the resulting probability density is compatible with a flat rotation curve.
arxiv