Recovery of fluctuation spectrum evolution from tomographic shear spectra

Abstract

Forthcoming large angle surveys are planned to obtain high precision tomographic shear data. In principle, they will allow us to recover the spectra of matter density fluctuation, at various redshift, through the inversion of the expressions yielding shear from fluctuation spectra. This was discussed in previous work, where SVD techniques for matrix inversion were also shown to be the optimal tool to this aim. Here we show the significant improvements obtainable by using a 7 bin tomography, as allowed by future Euclid data, as well as the question of error propagation from shear to fluctuation spectra. We find that the technique is a promising tool, namely for the analysis of baryon physics throug high-l shear spectra and to test the consistency between expansion rate and fluctuation growth.

22 pages, 10 figures

References in corpus (19)

• Cosmological viability of f(R)-gravity as an ideal fluid and its compatibility with a matter dominated phase
• Conditions for the cosmological viability of f(R) dark energy models
• Are f(R) dark energy models cosmologically viable ?
• Dark energy constraints from cosmic shear power spectra: impact of intrinsic alignments on photometric redshift requirements
• Measuring the dark side (with weak lensing)
• Chemical enrichment of galaxy clusters from hydrodynamical simulations
• Dynamics of interacting dark energy
• Consequences of dark matter-dark energy interaction on cosmological parameters derived from SNIa data
• The Effective Theory of Quintessence: the w<-1 Side Unveiled
• Optimal Surveys for Weak Lensing Tomography
• Interacting models of soft coincidence
• Constraints on coupled dark energy using CMB data from WMAP and SPT
• Do WMAP data favor neutrino mass and a coupling between Cold Dark Matter and Dark Energy?
• Size of spectroscopic calibration samples for cosmic shear photometric redshifts
• Brane assisted quintessential inflation with transient acceleration
• Toward a No-Go Theorem for an Accelerating Universe through a Nonlinear Backreaction
• Non-linear weak lensing forecasts
• The effect of structure formation on the expansion of the universe
• Dark Matter & Dark Energy from a single scalar field: CMB spectrum and matter transfer function