Halo Structures of Gravitational Lens Galaxies

  title={Halo Structures of Gravitational Lens Galaxies},
  author={Jaiyul Yoo and Christopher S. Kochanek and Emilio E. Falco and Brian A. McLeod The Ohio State University and Harvard--Smithsonian Center for Astrophysics},
  journal={The Astrophysical Journal},
We explore the halo structure of four gravitational lenses with well-observed, thin Einstein rings. We find that the gravitational potentials are well described by ellipsoidal density distributions in the sense that the best-fit nonellipsoidal models have parameters consistent with their ellipsoidal counterparts. We find upper limits on the standard parameters for the deviation from an ellipse of |a_3/a_0|<0.023, 0.019, 0.037, and 0.035, and |a_4/a_0|<0.034, 0.041, 0.051, and 0.064 for SDSS… Expand
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