Statistics – Computation
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...386l..33l&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 386, Feb. 20, 1992, p. L33-L36.
Statistics
Computation
89
Abundance, Computational Astrophysics, Galactic Clusters, Mass Distribution, Astronomical Models, Cosmology, Dark Matter, Distribution Functions, X Ray Spectra
Scientific paper
The Press-Schechter formalism for deriving distribution functions for mass and X-ray temperature (or velocity dispersion) of rich clusters of galaxies in hierarchical clustering scenarios is extended to general cosmologies with arbitrary values of cosmological density parameter and cosmological constant. These distribution functions are shown to provide important diagnostics for both the fluctuation spectrum and for the fundamental cosmological parameters. The distribution functions for low-density CDM models fall less steeply off at the high end compared with the 'standard' CDM model. This brings them closer to the observational results. However, CDM models with Omega(0) = 0.2 and H(0) = 100 km/s Mpc might need an antibias of the galaxy fluctuations relative to the mass fluctuations to reproduce the X-ray temperature function of Henry and Arnaud (1991) in the 3-10 keV range.
No associations
LandOfFree
Abundance of rich clusters of galaxies - A test for cosmological parameters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Abundance of rich clusters of galaxies - A test for cosmological parameters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abundance of rich clusters of galaxies - A test for cosmological parameters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1046714