galactic rotation curvesgalaxies massive dark halvesWIMPsBose gasweakly interacting massive particlesspiral galaxiesIt is shown that a gas of massive bosonic particles ( m sime 70 eV), e.g. Higgs particles, surrounding disk galaxies is able to generate flat rotation curves without internal ...
galaxies, kinematics and dynamicsgalaxies, structureA general solution of the Jeans equations for oblate scale-free logarithmic potentials is given. This provides all possible second velocity moments that can hold up a stellar population of flattened scale-free density against the gravity field. A two...
The rotation curve can be rising, falling or flat... NW Evans,JCA Read - 《Monthly Notices of the Royal Astronomical Society》 被引量: 28发表: 2010年 Landau excitation of spiral density waves in an inhomogeneous disk of stars flat galaxiesspiral armsslow dynamical relaxationhydrodynamical Jeans-...
You can learn more about the first photographs that clearly showed Earth's curvature inthis NASA story. Thisexplainerfrom Arizona State University lays out clearly and concisely the plentiful evidence for our planet's spherical shape. (Nearly spherical, rather: Earth's rotation causes it to be sl...
Then, the Earth is supposed to have various other motions, into the discussion of which I need not enter here, and will only notice that of its supposed rotation round its imaginary axis at the rate, at the Equator, of a thousand miles per hour, with an inclination of 23.5 degrees.”-...
galaxiesgeneral relativitygravitationrotating bodies/ general relativityHubble parameterflat rotation curvesgalaxiesspiral galaxiesnegative cosmological constantIt is shown that Einstein's cosmological constant can explain of the flat rotation curves of spiral galaxies....
the flat rotation curve of the spiral galaxies is the result of the perfect combination of the fluid mechanics and the gravitational mechanics, the nature has balanced itself very well, the mass density distribution indirectly extracted from NASA's near-infrared image of the Milky Way seems matchin...
I show that ?is strongly linked to an explanation of the flat rotation curve of galaxies. This strong correlation between Hubble's constant and enables us to solve the mystery of the surplus of gravity that is stabilizing the universe.Alexandre Chaloum Elbeze...
demonstrate that in-principle, one of the five solutions presented in the reading Nyambuya (2015b), i.e., a solution of the Four Poisson-Laplace equation of gravitation [or Nordstrm (1912) equation of gravitation] can be used to explain the anomalous flat rotation curves of spiral galaxies...
galaxies: structureWe present a new family of field-density pairs that may be used to model highly flattened systems like spiral galaxies. The rotation curves are asymptotically flat and the density is positive within the domain of a disc that is highly constricted near the centre. We used a ...