Weak Lensing Science, Surveys, and Systematics

Abstract

Weak gravitational lensing is one of the key probes of the cosmological model, dark energy, and dark matter, providing insight into both the cosmic expansion history and large scale structure growth history. Taking into account a broad spectrum of physics affecting growth - dynamical dark energy, extended gravity, neutrino masses, and spatial curvature - we analyze the cosmological constraints. Similarly we consider the effects of a range of systematic uncertainties, in shear measurement, photometric redshifts, and the nonlinear power spectrum, on cosmological parameter extraction. We also investigate, and provide fitting formulas for, the influence of survey parameters such as redshift depth, galaxy number densities, and sky area. Finally, we examine the robustness of results for different fiducial cosmologies.

11 pages, 9 figures

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Cited by in corpus (14)

• Origins of weak lensing systematics, and requirements on future instrumentation (or knowledge of instrumentation)
• First Measurement of the Cross-Correlation of CMB Lensing and Galaxy Lensing
• Star/galaxy separation at faint magnitudes: Application to a simulated Dark Energy Survey
• Parameter discordance in Planck CMB and low-redshift measurements: projection in the primordial power spectrum
• Cosmology from weak lensing alone and implications for the Hubble tension
• Neutrinos and dark energy constraints from future galaxy surveys and CMB lensing information
• Model Independent Tests of Cosmic Gravity
• Constraining cosmic string parameters with curl mode of CMB lensing
• The power spectrum of systematics in cosmic shear tomography and the bias on cosmological parameters
• Freezing Out Early Dark Energy
• Power Spectrum Precision for Redshift Space Distortions
• Probing Quintessence Potential with Future Cosmological Surveys
• CMB Lensing and Scale Dependent New Physics
• A Small-Scale Modification to the Lensing Kernel