Constraining the Magnetic Effects on H I Rotation Curves and the Need for Dark Halos

  title={Constraining the Magnetic Effects on H I Rotation Curves and the Need for Dark Halos},
  author={F. Javier S{\'a}nchez-Salcedo and Mauricio Reyes-Ruiz},
  journal={The Astrophysical Journal},
The density profiles of dark halos are usually inferred from the rotation curves of disk galaxies based on the assumption that the gas is a good tracer of the gravitational potential of the galaxies. Some authors have suggested that magnetic pinching forces could alter significantly the rotation curves of spiral galaxies. In contrast to other studies that have concentrated on the vertical structure of the disk, here we focus on the problem of magnetic confinement in the radial direction to… Expand
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