CMB cluster lensing: Cosmography with the longest lever arm

  title={CMB cluster lensing: Cosmography with the longest lever arm},
  author={Wayne Hu and Daniel E. Holz and Chris J. Vale},
  • Wayne Hu, Daniel E. Holz, Chris J. Vale
  • Published 2007
  • Physics
  • We discuss combining gravitational lensing of galaxies and the cosmic microwave background by clusters to measure cosmographic distance ratios, and hence dark energy parameters. Advantages to using the cosmic microwave background as the second source plane, instead of galaxies, include a well-determined source distance, a longer lever arm for distance ratios, typically up to an order of magnitude higher sensitivity to dark energy parameters, and a decreased sensitivity to photometric redshift… CONTINUE READING

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