The Anatomy of a quadruply imaged gravitational lens system

  title={The Anatomy of a quadruply imaged gravitational lens system},
  author={Sherry H. Suyu and Roger Blandford Caltech and Kipac},
  journal={Monthly Notices of the Royal Astronomical Society},
The key to using a strong gravitational lens system to measure the Hubble constant is to obtain an accurate model of the lens potential. In this paper, we investigate the properties of gravitational lens B1608+656, a quadruply-imaged lens system with an extended source intensity distribution. Our analysis is valid for generic quadruply-lensed systems. Limit curves and isophotal separatrices are defined for such systems, and we show that the isophotal separatrices must intersect at the critical… Expand
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