Contributions from Dilatonic Strings to the Flat Behaviour of the Rotational Curves in Galaxies
arXiv:gr-qc/0507109 · doi:10.1142/S0218271806007924
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.
This version to be published in the Int. Journal of Modern Phys. D
References in corpus (10)
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters
- First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Foreground Emission
- Mechanics of cosmic rings
- String theory, cosmology and varying constants
- Cold, warm, and composite (cool) cosmic string models
- Dilatonic current-carrying cosmic strings
- Wakes in Dilatonic Current-Carrying Cosmic Strings
- Breakdown of the Mechanism of Forming Wakes by a Current-Carrying String
- Cosmic String Spacetime in Dilaton Gravity and Flat Rotation Curves
- Formation of Wakes by Chiral, Conducting Cosmic Strings