11 citations · 36 across the 18 of their papers we have counts for
6 papers · 1 filter
Accurate Shear Estimation with Fourth-Order Moments
Andy Park, Xiangchong Li, Rachel Mandelbaum
As imaging surveys progress in exploring the large-scale structure of the Universe through the use of weak gravitational lensing, achieving subpercent accuracy in estimating shape…
Analytical Noise Bias Correction for Precise Weak Lensing Shear Inference
Xiangchong Li, Rachel Mandelbaum, The LSST Dark Energy Science Collaboration
Noise bias is a significant source of systematic error in weak gravitational lensing measurements that must be corrected to satisfy the stringent standards of modern imaging survey…
The little coadd that could: Estimating shear from coadded images
Robert Armstrong, Erin Sheldon, Eric Huff +9
Upcoming wide field surveys will have many overlapping epochs of the same region of sky. The conventional wisdom is that in order to reduce the errors sufficiently for systematics-…
Third-order intrinsic alignment of SDSS BOSS LOWZ galaxies
Laila Linke, Susan Pyne, Benjamin Joachimi +4
Cosmic shear is a powerful probe of cosmology, but it is affected by the intrinsic alignment (IA) of galaxy shapes with the large-scale structure. Upcoming surveys like Euclid and…
A Hamiltonian, post-Born, three-dimensional, on-the-fly ray tracing algorithm for gravitational lensing
Alan Junzhe Zhou, Yin Li, Scott Dodelson +4
The analyses of the next generation cosmological surveys demand an accurate, efficient, and differentiable method for simulating the universe and its observables across cosmologica…
Matching Cosmic Shear Analysis in Harmonic and Real Space
Andy Park, Sukhdeep Singh, Xiangchong Li +2
Recent cosmic shear analyses have exhibited discrepancies of up to between the inferred cosmological parameters when analyzing summary statistics in real space versus harmonic…