Self-similar Models for the Mass Profiles of Early-Type Lens Galaxies

@article{Rusin2003SelfsimilarMF,
  title={Self-similar Models for the Mass Profiles of Early-Type Lens Galaxies},
  author={David Joseph Rusin and Christopher S. Kochanek and Charles R. Keeton},
  journal={The Astrophysical Journal},
  year={2003},
  volume={595},
  pages={29-42}
}
We introduce a self-similar mass model for early-type galaxies and constrain it using the aperture mass-radius relations determined from the geometries of 22 gravitational lenses. The model consists of two components: a concentrated component, which traces the light distribution, and a more extended power-law component (? r-n), which represents the dark matter. We find that lens galaxies have total mass profiles that are nearly isothermal, or slightly steeper, on the several-kiloparsec radial… 

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