Perfect Fluid Dark Matter
arXiv:1009.3572 · doi:10.1016/j.physletb.2010.09.038
Abstract
Taking the flat rotation curve as input and treating the matter content in the galactic halo region as perfect fluid, we obtain space time metric at the galactic halo region in the framework of general relativity. We find that the resultant metric is a non-relativistic-dark-matter-induced space-time embedded in a static Friedmann-Lemaître-Robertson-Walker universe. This means that the flat rotation curve not only leads to the existence of dark matter but also suggests the background geometry of the universe. The flat rotation curve and the demand that the dark matter be non-exotic together indicate a (nearly) flat universe as favored by the modern cosmological observations. We obtain the expressions for energy density and pressure of dark matter halo and consequently the equation of state of dark matter. Various other aspects of the solution are also analyzed.
7 pages, 5 figures, To appear in Phys. Lett. B (2010)
References in corpus (15)
- Particle Dark Matter: Evidence, Candidates and Constraints
- Supersymmetric Dark Matter
- Galactic Halos As Boson Stars
- Spherical Scalar Field Halo in Galaxies
- ROTATION CURVES OF 967 SPIRAL GALAXIES
- Nonminimal global monopoles and bound orbits
- Energetics in Condensate Star and Wormholes
- Features of galactic halo in a brane world model and observational constraints
- Flat rotation curves in Chern-Simons modified gravity
- Energy and angular momentum densities of stationary gravity fields
- Scalar fields properties for flat galactic rotation curves
- Galactic rotation curves and brane world models
- Remarks On The Spherical Scalar Field Halo In Galaxies
- Global monopole, dark matter and scalar tensor theory
- Quantum Phase Shift in Chern-Simons Modified Gravity
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