6 papers
Scalar Field Dark Matter and Galaxy Formation
Miguel Alcubierre, F. Siddhartha Guzman, Tonatiuh Matos +3
We present a general description of the scalar field dark matter (SFDM) hypothesis in the cosmological context. The scenario of structure formation under such a hypothesis is based…
Answer to the Comment about the Letter entitled ``Scalar fields as dark matter in spiral galaxies''
F. S. Guzman, T. Matos
In this manuscript the authors present a detailed answer to the comment in order to avoid misunderstandings in the future.
Geometric Conditions on the Type of Matter Determining the Flat Behavior of the Rotational Curves in Galaxies
Tonatiuh Matos, Dario Nunez, F. Siddhartha Guzman +1
In an arbitrary axisymmetric stationary spacetime, we determine the expression for the tangential velocity of test objects following a circular stable geodesic motion in the equato…
Quintessence-like Dark Matter in Spiral Galaxies
F. Siddhartha Guzman, Tonatiuh Matos, Dario Nunez +1
Through the geodesic analysis of a static and axially symmetric space time, we present conditions on the state equation of an isotropic perfect fluid , when it is considered…
Quintessence at Galactic Level?
T. Matos, F. S. Guzman
Recently it has been proposed that the main contributor to the dark energy of the Universe is a dynamical, slow evolving, spatially inhomogeneous scalar field called quintessence.…
Scalar dark matter in spiral galaxies
F. S. Guzman, T. Matos, H. Villegas-Brena
An exact, axially symmetric solution to the Einstein-Klein-Gordon field equations is employed to model the dark matter in spiral galaxies. The extended rotation curves from a previ…