Corpus ID: 119427389

The Hubble Constant from Gravitational Lens Time Delays

@inproceedings{Kochanek2003TheHC,
  title={The Hubble Constant from Gravitational Lens Time Delays},
  author={Christopher S. Kochanek and P. S'ari Harvard-Smithsonian Center for Astrophysics and Mit},
  year={2003}
}
There are now 10 firm time delay measurements in gravitational lenses. The physics of time delays is well understood, and the only important variable for interpreting the time delays to determine H_0 is the mean surface mass density(in units of the critical density for gravitational lensing) of the lens galaxy at the radius of the lensed images. More centrally concentrated mass distributions with lowerpredict higher Hubble constants, with H_0~1-to lowest order. While we cannot determinedirectly… Expand
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