Dark energy constraints from lensing-detected galaxy clusters

@article{Marian2006DarkEC,
  title={Dark energy constraints from lensing-detected galaxy clusters},
  author={Laura Marian and Gary M. Bernstein},
  journal={Physical Review D},
  year={2006},
  volume={73},
  pages={123525}
}
We study the ability of weak-lensing surveys to detect galaxy clusters and constrain cosmological parameters, in particular, the equation of state of dark energy. There are two major sources of noise for weak-lensing cluster measurements: the ``shape noise'' from the intrinsic ellipticities of galaxies; and the large scale projection noise. We produce a filter for the shear field which optimizes the signal-to-noise of shape-noise-dominated shear measurements. Our Fisher-matrix analysis of this… 

Figures and Tables from this paper

Constraining dark energy by combining cluster counts and shear-shear correlations in a weak lensing survey
We study the potential of a large future weak lensing survey to constrain dark-energy properties by using both the number counts of detected galaxy clusters (sensitive primarily to density
The signature of dark energy perturbations in galaxy cluster surveys
Models of dynamical dark energy unavoidably possess fluctuations in the energy density and pressure of that new component. In this paper we estimate the impact of dark energy fluctuations on the
OPTIMAL CAPTURE OF NON-GAUSSIANITY IN WEAK-LENSING SURVEYS: POWER SPECTRUM, BISPECTRUM, AND HALO COUNTS
We compare the efficiency of weak-lensing-selected galaxy cluster counts and of the weak-lensing bispectrum at capturing non-Gaussian features in the dark matter distribution. We use the halo model
Sensitivity of galaxy cluster dark energy constraints to halo modeling uncertainties
We perform a sensitivity study of dark energy (DE) constraints from galaxy cluster surveys to uncertainties in the halo mass function, bias, and the mass-observable relation. For a set of idealized
Cosmology with the shear-peak statistics
Weak-lensing searches for galaxy clusters are plagued by low completeness and purity, severely limiting their usefulness for constraining cosmological parameters with the cluster mass function. A
Optimizing weak lensing mass estimates for cluster profile uncertainty
Weak lensing measurements of cluster masses are necessary for calibrating mass-observable relations (MORs) to investigate the growth of structure and the properties of dark energy. However, the
Can a galaxy redshift survey measure dark energy clustering
A wide-field galaxy redshift survey allows one to probe galaxy clustering at largest spatial scales, which carries invaluable information on horizon-scale physics complementarily to the cosmic
DARK MATTER STRUCTURES IN THE DEEP LENS SURVEY
We present a regularized maximum likelihood weak-lensing reconstruction of the Deep Lens Survey F2 field (4 deg{sup 2}). High signal-to-noise ratio peaks in our lensing significance map appear to be
THE IMPACT OF CORRELATED PROJECTIONS ON WEAK LENSING CLUSTER COUNTS
Large-scale structure projections are an obstacle in converting the shear signal of clusters detected in weak-lensing maps into virial masses. However, this step is not necessary for constraining
COMPREHENSIVE TWO-POINT ANALYSES OF WEAK GRAVITATIONAL LENSING SURVEYS
We present a framework for analyzing weak gravitational lensing survey data, including lensing and source-density observables, plus spectroscopic redshift calibration data. All two-point observables
...
...

References

SHOWING 1-10 OF 124 REFERENCES
Weak-Lensing Surveys and the Intrinsic Correlation of Galaxy Ellipticities
We explore the possibility that an intrinsic correlation between galaxy ellipticities arising during the galaxy formation process may account for part of the shear signal recently reported by several
Constraining dark energy from the abundance of weak gravitational lenses
We examine the prospect of using the observed abundance of weak gravitational lenses to constrain the equation-of-state parameter w = p /p of dark energy. Dark energy modifies the distance-redshift
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
Detection of (dark) matter concentrations via weak gravitational lensing
The distortion of images of faint background galaxies by (weak) gravitational lensing can be used to measure the mass distribution of the deflector. The image distortions can be used to define a
Shear-selected Cluster Cosmology: Tomography and Optimal Filtering
We study the potential of weak-lensing surveys to detect clusters of galaxies, using a fast particle-mesh cosmological N-body simulation algorithm specifically tailored to investigate the statistics
An optimal filter for the detection of galaxy clusters through weak lensing
We construct a linear filter optimised for detecting dark-matter halos in weak-lensing data. The filter assumes a mean radial profile of the halo hear pattern and modifies that shape by the noise
How well can we determine cluster mass profiles from weak lensing
Weak gravitational lensing provides a direct way to study the mass distribution of clusters of galaxies at large radii. Unfortunately, large-scale structure along the line of sight also contributes
Searching for massive clusters in weak lensing surveys
We explore the ability of weak lensing surveys to locate massive clusters. We use both analytic models of dark matter haloes and mock weak lensing surveys generated from a large cosmological N-body
Cosmological parameters from lensing power spectrum and bispectrum tomography
We examine how lensing tomography with the bispectrum and power spectrum can constrain cosmological parameters and the equation of state of dark energy. Our analysis uses the full information at the
Self-Calibration in Cluster Studies of Dark Energy: Combining the Cluster Redshift Distribution, the Power Spectrum, and Mass Measurements
We examine the prospects for measuring the dark energy equation-of-state parameter w within the context of any uncertain redshift evolution of galaxy cluster structure (building on our earlier work)
...
...