Contributions from Dilatonic Strings to the Flat Behaviour of the Rotational Curves in Galaxies
M. Leineker Costa (IF/UnB), A. L. Naves de Oliveira (DF/UEL), M. E., X. Guimaraes (MAT/UnB)
TL;DR
This paper investigates how dilatonic, current-carrying strings can explain the flat rotational curves observed in galaxies by deriving the tangential velocity of test objects in such spacetimes.
Contribution
It introduces a model using dilatonic strings to account for galaxy rotation curves, providing a novel theoretical approach to dark matter phenomena.
Findings
Derived the expression for tangential velocity in dilatonic string spacetime
Showed the model can produce flat rotational curves
Proposed a new link between string theory and galactic dynamics
Abstract
We analyse the flat behaviour of the rotational curves in some galaxies in the framework of a dilatonic, current-carrying string. We determine the expression of the tangential velocity of test objects following a stable circular equatorial orbit in this spacetime.
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