On determining the cluster abundance normalization

• DOI: 10.1046/j.1365-8711.2003.06525.x
• Publication Date: 2003-06-02T12:43:46Z
• Authors: E. Pierpaoli; S. Borgani; D. Scott; M. White
• Keywords: Normalization; Systematic error

Different determinations currently suggest scattered values for the power spectrum normalization on scale of galaxy clusters, σ8. Here we concentrate constraints coming from X-ray temperature and luminosity functions (XTF XLF), investigate several possible sources discrepancies in results. We conclude that main source error both methods is mass scaling relation involved, particular way its intrinsic scatter systematic are treated.