377 citations · 3k across the 26 of their papers we have counts for
5 papers · 1 filter
Unequal-Time Correlators for Cosmology
T. D. Kitching, A. F. Heavens
Measurements of the power spectrum from large-scale structure surveys have to date assumed an equal-time approximation, where the full cross-correlation power spectrum of the matte…
Simulating the Effect of Non-Linear Mode-Coupling in Cosmological Parameter Estimation
A. Kiessling, A. N. Taylor, A. F. Heavens
Fisher Information Matrix methods are commonly used in cosmology to estimate the accuracy that cosmological parameters can be measured with a given experiment, and to optimise the…
3D Photometric Cosmic Shear
T. D. Kitching, A. F. Heavens, L. Miller
Here we present a number of improvements to weak lensing 3D power spectrum analysis, 3D cosmic shear, that uses the shape and redshift information of every galaxy to constrain cosm…
Reducing sample variance: halo biasing, non-linearity and stochasticity
H. Gil-Marín, C. Wagner, L. Verde +2
Comparing clustering of differently biased tracers of the dark matter distribution offers the opportunity to reduce the cosmic variance error in the measurement of certain cosmolog…
A New Approach to Probing Primordial Non-Gaussianity
Dipak Munshi, Alan Heavens
We address the dual challenge of estimating deviations from Gaussianity arising in models of the Early Universe, whilst retaining information necessary to assess whether a detectio…