Cosmological constraints from the local X-ray luminosity function of the most X-ray-luminous galaxy clusters

By S. Allen, R. Schmidt, A. C. Fabian, H. Ebeling. 2002

174 citations recorded by the source corpus.

We present precise constraints on the normalization of the power spectrum of mass fluctuations in the nearby Universe, σ 8, as a function of the mean local matter density, � m. Using the observed local X-ray luminosity function of galaxy clusters from the extended BCS and REFLEX studies, a mass‐luminosity relation determined from Chandra and ROSAT X-ray data and weak gravitational lensing observations, and the mass function predicted by the Hubble Volume simulations of Evrard et al., we obtain σ 8 = (0.508 ± 0.019) � −(0.253±0.024) ,

Subfields: Astronomy and Astrophysics, Instrumentation

View Paper: https://www.semanticscholar.org/paper/1d6f78e9f0a79d7120b2e32bc1d7fc34b2c1c044

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In Astronomy and Astrophysics

  1. S. Allen
  2. Risa Wechsler
  3. Andrey V. Kravtsov
  4. H. Ebeling
  5. P. Hopkins
  6. L. Hernquist
  7. A. Mantz
  8. Volker Springel

In Instrumentation

  1. Risa Wechsler
  2. S. Allen
  3. H. Ebeling
  4. A. Mantz
  5. A. Koekemoer
  6. P. Capak
  7. Andrey V. Kravtsov
  8. P. Hopkins

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