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4 papers · 2 filters
Large-scale growth evolution in the Szekeres inhomogeneous cosmological models with comparison to growth data
Austin Peel, Mustapha Ishak, M. A. Troxel
We use the Szekeres inhomogeneous cosmological models to study the growth of large-scale structure in the universe including nonzero spatial curvature and a cosmological constant.…
Self-calibrating the gravitational shear-intrinsic ellipticity-intrinsic ellipticity (GII) cross-correlation
M. A. Troxel, Mustapha Ishak
We extend the 3-point intrinsic alignment self-calibration technique to the gravitational shear-intrinsic ellipticity-intrinsic ellipticity (GII) bispectrum. The proposed technique…
Spatial curvature and cosmological tests of general relativity
Jason Dossett, Mustapha Ishak
It is well-known that allowing for spatial curvature affects constraints on cosmological parameters such as the dark energy equation of state parameters. Here we study the effect o…
Self-Calibration for 3-point Intrinsic Alignment Auto-Correlations in Weak Lensing Surveys
M. A. Troxel, Mustapha Ishak
The weak lensing signal (cosmic shear) has been shown to be strongly contaminated by the various types of galaxy intrinsic alignment (IA) correlations, which poses a barrier to pre…