Observational Evidence for Stochastic Biasing

@article{Tegmark1999ObservationalEF,
  title={Observational Evidence for Stochastic Biasing},
  author={Max Tegmark and Benjamin C. Bromley},
  journal={The Astrophysical Journal Letters},
  year={1999},
  volume={518},
  pages={L69 - L72}
}
We show that the galaxy density in the Las Campanas Redshift Survey cannot be perfectly correlated with the underlying mass distribution since various galaxy subpopulations are not perfectly correlated with each other, even taking shot noise into account. This rules out the hypothesis of simple linear biasing and suggests that the recently proposed stochastic biasing framework is necessary for modeling actual data. 

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