It is proposed that the flat nature of the rotation curves of galaxies may be a result of the energy cascading processes occuring in turbulent galactic atmospheres. Thus, in this model, there is no need of invoking dark matter to account for the flat rotation curves of galaxies....
9. FIGURE CAPTIONS 1) Rotation curves of spiral galaxies under the generalized Einstein action. The numbers on the curves indicate the values of a in Eq. (2.23). The prediction of Newtonian theory for a = 2 is also given by a broken curve for comparison. 2) Scale factor of universe as...
4.3.1Galaxy Rotation Curves Much of the evidence comes from the motions of galaxies. A galaxy rotation curve is a plot of theorbital velocities(i.e., the speeds) of visible stars or gas in that galaxy versus their radial distance from that galaxy's center. The rotational speed of galaxies...
Optical rotation curves of distant field galaxies: sub-L ∗ systems. ApJ - Vogt, Phillips, et al. - 1997 () Citation Context ...ctrum of a galaxy at z ∼ 2.2 showing the signature of ordered rotation (left panel); the implied rotation curve is shown in the right-hand panel (...
galaxies were dominated by dark matter and that the contribu- tion of the stellar disk to the rotation curve, even if scaled to its maximum possible value, could not explain the observed rota- tion curve in the inner parts. The HI rotation curves of LSB galaxies have received a great ...
The flat rotation curves are counter to what we see for the distribution of stars and gas in the spiral galaxies. The surface luminosity of the disk falls off exponentially with radius, implying that the mass of luminous matter, mostly stars, is concentrated around the galactic center. The ...
Galaxy Rotation Curves from General Relativity with Infrared Renormalization Group EffectsAstrophysics - Cosmology and Extragalactic AstrophysicsGeneral Relativity and Quantum CosmologyWe review our contribution to infrared Renormalization Group (RG) effects to General Relativity in the context of galaxies. ...
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 the shape of rotation curves with baryonic prope...
The 50-years discrepancy in Galaxy Rotation Curves is in actuality a mismatch between the observed rotational velocities in galaxies and our predictions regarding these velocities. It is customary to plot those velocities as a function of the distance from the galactic center, as can be seen in ...
3. Why do rotation curves of spiral galaxies flatten out? A. Due to the presence of dark matter B. Because of the lack of stars C. As a result of gravitational forces D. Due to the expansion of the universe Show Answer 4. What is the significance of dark matter in spiral ga...