Observational Evidence for Stochastic Biasing

1998/09/30 by Max Tegmark, Benjamin C. Bromley · 7 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Biasing #Cosmology and Gravitation Theories #Distribution (mathematics) #Galaxies: Formation, Evolution, Phenomena #Galaxy #Noise (video) #Redshift #Shot noise #Simple (philosophy) #astro-ph

paper · pdf · doi:10.1086/312068

published as Astrophys.J.518:L69-L72,1999 · 4 pages, with 2 figures included. Minor revisions to match accepted ApJL version. Links and color fig at http://www.sns.ias.edu/~max/r_frames.html or from [email protected]

arxiv created 1999/04/17 · openalex publication_date 1999/06/20 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

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.

Citations

• Implications of Spikes in the Redshift Distribution ofz∼ 3 Galaxies
• Eulerian bias and the galaxy density field
• Stochastic Biasing and the Galaxy–Mass Density Relation in the Weakly Nonlinear Regime
• Evolution of galaxy clustering
• Weighing Neutrinos with Galaxy Surveys
• The bias field of dark matter haloes
• Excursion set approach to the clustering of dark matter haloes in Lagrangian space

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