The power‐law exponent suggests a possible relationship with NGC 5907's dark matter halo. In fact, the profile of light from this luminous halo is consistent with the distribution of dark mass inferred from the
Together with HI observations, several mass models were adjusted in order to study the nature of the dark halo as well as the mass-to-light ratio of the galaxy. We find that in order to constrain these models, it is important to have a high resolution H α rotation curve for the inner...
The Dark Matter Problem 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 rot...
M31 rotation curves: r.m.s. error = \(\sigma _{MBG} = 27.980 \, \textrm{km}/\textrm{s}\), \(\sigma _{Newton} = 83.076 \, \textrm{km}/\textrm{s}\) Full size image Fig. 3 Milkyway: comparison of the NFW dark matter profile with the pseudo mass curve. The pseudo mass curv...
5 it is assumed that the companion to primary galaxy mass ratio is 0.25 and that both galaxies have massive dark halos. Specifically, the potential assumed for the primary galaxy gives a rotation curve of the form v=v(γ)(r/γ)1/n, where γ is a constant scale-length. A large value...
redshift galaxy population was strongly baryon-dominated, with dark matter playing a smaller part than in the local Universe; and second, the large velocity dispersion in high-redshift disks introduces a substantial pressure term that leads to a decrease in rotation velocity with increasing radius....
& Wild, S. Prospects of antideuteron detection from dark matter annihilations or decays at AMS-02 and GAPS. JCAP 02, 021 (2013). Article ADS Google Scholar Persic, M., Salucci, P. & Stel, F. The universal rotation curve of spiral galaxies—1. The dark matter connection. Mon. Not....
We use high-resolution N-body simulations to study the equilibrium density profiles of dark matter halos in hierarchically clustering universes. We find that all such profiles have the same shape, independent of halo mass, of initial density fluctuation spectrum, and of the values of the cosmologic...
The Galactic halo of mass ~ 2 x 10^12 Msol enclos... N Bilic,GB Tupper,RD Viollier - 《Physics》 被引量: 11发表: 2003年 Deriving the velocity distribution of Galactic dark matter particles from the rotation curve data. The velocity distribution function (VDF) of the hypothetical weakly ...
The observation of the rotation curve using neutral hydrogen line emission is a better way of determining the mass of a galaxy at a large distance. First, it appears that the H I distribution is considerably more extended than that of the bright stars; H I maps extend, at times, to four...