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astro-ph2000
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…
astro-ph2000
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…