Breaking Cosmological Degeneracies in Galaxy Cluster Surveys with a Physical Model of Cluster Structure

@article{Younger2006BreakingCD,
  title={Breaking Cosmological Degeneracies in Galaxy Cluster Surveys with a Physical Model of Cluster Structure},
  author={Joshua Daniel Younger and Zolt{\'a}n Haiman and Greg L. Bryan and Sheng Wang Columbia Astrophysics Lab Department of Astronomy and Columbia University Department of Physics and Columbia University Brookhaven National Laboratory},
  journal={The Astrophysical Journal},
  year={2006},
  volume={653},
  pages={27-42}
}
It has been shown that in an idealized galaxy cluster survey, containing � 10,000 clusters, statistical errors on dark energy and other cosmological parameters will be at the percent level. Furthermore, through “self–calibration”, parameters describing the mass–observable relation and cosmology can be simultaneously determined, though at a loss in accuracy by about an order of magnitude. Here we examine an alternative approach to self–calibration, in which a parametrized ab–initio physical… 
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References

SHOWING 1-10 OF 80 REFERENCES
Constraints on Cosmological Parameters from Future Galaxy Cluster Surveys
We study the expected redshift evolution of galaxy cluster abundance between 0 z 3 in different cosmologies, including the effects of the cosmic equation of state parameter w ? p/?. Using the halo
Future Galaxy Cluster Surveys: The Effect of Theory Uncertainty on Constraining Cosmological Parameters
Using the Fisher matrix formalism, we quantitatively investigate the constraints on a 10 dimensional space of cosmological parameters which may be obtained with future cluster surveys. We explore the
Cosmology with galaxy clusters in the XMM large-scale structure survey
The upcoming XMM Large Scale Structure Survey (XMM-LSS) will ultimately provide a unique mapping of the distribution of X-ray sources in a contiguous 64 deg 2 region. In particular, it will provide
Self-consistency and calibration of cluster number count surveys for dark energy
Cluster number counts offer sensitive probes of the dark energy if and only if the evolution of the cluster mass versus observable relation(s) is well calibrated. We investigate the potential for
Constraining the evolution of dark energy with a combination of galaxy cluster observables
We show that the abundance and redshift distribution (dN/dz) of galaxy clusters in future high-yield cluster surveys, combined with the spatial power spectrum [P{sub c}(k)] of the same clusters, can
Are Clusters Standard Candles? Galaxy Cluster Scaling Relations with the Sunyaev-Zeldovich Effect
An extensive sample of galaxy clusters will be available in the coming years, detected through their Sunyaev-Zeldovich effect (SZE). We use a semianalytic model to study the scientific yield of
Galaxy clusters and cold dark matter : a low-density unbiased universe ?
Large-scale simulations of a universe dominated by cold dark matter (CDM) are tested against two fundamental properties of clusters of galaxies: the cluster mass function and the cluster correlation
The mass function of dark matter haloes
We combine data from a number of N-body simulations to predict the abundance of dark haloes in cold dark matter (CDM) universes over more than four orders of magnitude in mass. A comparison of
The cluster abundance in flat and open cosmologies
We use the galaxy cluster X-ray temperature distribution function to constrain the am­ plitude of the power spectrum of density inhomogeneities on the scale corresponding to clusters. We carry out
Probing Dark Energy with Baryonic Acoustic Oscillations from Future Large Galaxy Redshift Surveys
We show that the measurement of the baryonic acoustic oscillations in large high-redshift galaxy surveys offers a precision route to the measurement of dark energy. The cosmic microwave background
...
...