Super-Sample Signal

  title={Super-Sample Signal},
  author={Yin Li and Wayne Hu and Masahiro Takada},
  journal={Physical Review D},
When extracting cosmological information from power spectrum measurements, we must consider the impact of super-sample density fluctuations whose wavelengths are larger than the survey scale. These modes contribute to the mean density fluctuation $\delta_b$ in the survey and change the power spectrum in the same way as a change in the cosmological background. They can be simply included in cosmological parameter estimation and forecasts by treating $\delta_b$ as an additional cosmological… 

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