An Imprint of Superstructures on the Microwave Background due to the Integrated Sachs-Wolfe Effect

@article{Granett2008AnIO,
  title={An Imprint of Superstructures on the Microwave Background due to the Integrated Sachs-Wolfe Effect},
  author={Benjamin R Granett and Mark C. Neyrinck and Istv{\'a}n Szapudi},
  journal={The Astrophysical Journal Letters},
  year={2008},
  volume={683},
  pages={L99 - L102}
}
We measure hot and cold spots on the microwave background associated with supercluster and supervoid structures identified in the Sloan Digital Sky Survey luminous red galaxy catalog. The structures give a compelling visual imprint, with a mean temperature deviation of 9.6 ± 2.2 μK, i.e., above 4 σ. We interpret this as a detection of the late-time integrated Sachs-Wolfe (ISW) effect, in which cosmic acceleration from dark energy causes gravitational potentials to decay, heating or cooling… 

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