Galaxy rotation curves are considered to be convincing evidence for dark matter or some dynamically equivalent alternative mechanism. Starting only from the rotation curve data, we present a model independent approach of testing a general hypothesis that dark matter has the properties of a barotropic ...
galaxies: stars: rotation curvesThe dark matter accretion theory (around a central body) of the author on the basis of his 5-dimensional Projective Unified Field Theory (PUFT) is applied to the orbital motion of stars around the center of the Galaxy. The departure of the motion from ...
Semi-analytical method is used to derive rotation curves for such a clumpy dark matter density profile. It is found that the halo substructures significantly affect the galaxy velocity field. Based on the fractal geometry of the halo, this self-consistent model predicts an NFW-like rotation curve...
dark matter theory dwarfs galaxies galaxy dynamics rotation curves of galaxies 摘要 There is ample evidence from rotation curves that dark matter halos around disk galaxies have nontrivial dynamics. Of particular significance are: a) the cored dark matter profile of disk galaxies, b) correlations of...
So far, the only significant evidence for dark matter has been found in its gravitational interaction, as observed in galaxy rotation curves or gravitational lensing effects. The inferred dark matter agglomerations follow almost universal mass density profiles that can be reproduced well in simulations,...
already efficiently condensed into flat, rotating discs, while thedark matter halossurrounding them were much larger and more spread out. Apparently it took billions of years longer fordark matterto condense as well, so its dominating effect is only seen on the rotation velocities of galaxy discs...
It has also been argued that hot dark matter, i.e., most notably, light, massive neutrinos, cannot explain the galactic rotation curves [45]. However, the cold-dark-matter paradigm also generates significant clumpiness below the Mpc scale, so that a galaxy the size of the Milky Way should...
Dark Matter Detected through its gravitational effects. The rotation curves of galaxies suggest the presence of dark matter. 9 Dark Energy Dominant component of the universe's energy content. Dark energy influences the fate of the universe. 6 Dark Matter Hypothesized to be made of undiscovered part...
already efficiently condensed into flat, rotating discs, while thedark matter halossurrounding them were much larger and more spread out. Apparently it took billions of years longer fordark matterto condense as well, so its dominating effect is only seen on the rotation velocities of galaxy discs...
the telescope, the data provided an extremely detailed record of the speed of the galaxy's rotation from the center of the galaxy all way out to its far reaches. Called a "rotation curve," this measurement is just what astronomers use to determine the amount of dark matter in a galaxy. ...