40 citations · 41 across the 14 of their papers we have counts for
5 papers · 1 filter
Non-Gaussian deflections in iterative optimal CMB lensing reconstruction
Omar Darwish, Sebastian Belkner, Louis Legrand +2
The gravitational lensing signal from the Cosmic Microwave Background is highly valuable to constrain the growth of the structures in the Universe in a clean and robust manner over…
: GPU Accelerated Spherical Harmonic Transforms on Arbitrary Pixelizations
Sebastian Belkner, Adriaan J. Duivenvoorden, Julien Carron +2
We present , a general-purpose Python package that wraps a highly efficient CUDA implementation of the nonuniform spin- spherical harmonic transform. The metho…
Detectable signals of post-Born lensing curl B-modes
Mathew Robertson, Giulio Fabbian, Julien Carron +1
Curl lensing, also known as lensing field-rotation or shear B-modes, is a distinct post-Born observable caused by two lensing deflections at different redshifts (lens-lens coupling…
Spherical bispectrum expansion and quadratic estimators
Julien Carron, Antony Lewis
We describe a general expansion of spherical (full-sky) bispectra into a set of orthogonal modes. For squeezed shapes, the basis separates physically-distinct signals and is domina…
Growth history and quasar bias evolution at z < 3 from Quaia
G. Piccirilli, G. Fabbian, D. Alonso +4
We make use of the Gaia-Unwise quasar catalogue, Quaia, to constrain the growth history out to high redshifts from the clustering of quasars and their cross-correlation with maps o…