A POSSIBLE COLD IMPRINT OF VOIDS ON THE MICROWAVE BACKGROUND RADIATION

@article{Cai2014APC,
  title={A POSSIBLE COLD IMPRINT OF VOIDS ON THE MICROWAVE BACKGROUND RADIATION},
  author={Yan-Chuan Cai and Mark C. Neyrinck and Istv{\'a}n Szapudi and Shaun Cole and Carlos S. Frenk},
  journal={The Astrophysical Journal},
  year={2014},
  volume={786}
}
We measure the average temperature decrement on the cosmic microwave background (CMB) produced by voids selected in the Sloan Digital Sky Survey Data Release 7 spectroscopic redshift galaxy catalog, spanning redshifts 0 < z < 0.44. We find an imprint amplitude between 2.6 and 2.9 μK as viewed through a compensated top-hat filter scaled to the radius of each void, we assess the statistical significance of the imprint at ∼2σ, and we make crucial use of N-body simulations to calibrate our analysis… 
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