40 citations · 41 across the 14 of their papers we have counts for
15 papers
Optimization of multi-resolution observation strategies for cosmic microwave background experiments
Sara M. Simon, Jacques Delabrouille, Julien Carron +4
Cosmic microwave background (CMB) observations are increasingly performed by using a combination of both small aperture telescopes (SATs) and large aperture telescopes (LATs) to ex…
Cross-correlation of SPT-3G D1 CMB lensing and DES Y3 galaxy lensing
A. Ouellette, Y. Omori, E. Anderes +92
Measurements of the weak lensing of galaxies and of the cosmic microwave background (CMB) provide direct probes of the cosmic matter density field, but the two observables are sens…
SPT-3G D1: Maps of the millimeter-wave sky from 2019 and 2020 observations of the SPT-3G Main field
W. Quan, E. Camphuis, C. Daley +92
Maps of the sky in millimeter wavelengths contain rich information on cosmology through anisotropies of the cosmic microwave background (CMB). Creating multifrequency sky maps of a…
Fast partial-sky spherical harmonic transforms
Julien Carron, Martin Reinecke
We discuss in some details a novel algorithm for performing partial-sky spherical harmonic transforms (SHT), building on the Fourier-sphere method of Reinecke et al (2023) handling…
An iterative CMB lensing estimator minimizing instrumental noise bias
Louis Legrand, Blake Sherwin, Anthony Challinor +2
Noise maps from CMB experiments are generally statistically anisotropic, due to scanning strategies, atmospheric conditions, or instrumental effects. Any mis-modeling of this compl…
Characterizing CMB noise anisotropies from CMB delensing
Louis Legrand, Julien Carron
Un-doing the effect of gravitational lensing on the Cosmic Microwave Background (`de-lensing') is essential in shaping constraints on weak signals limited by lensing effects on the…
On likelihood-based analysis of the gravitationally (de)lensed CMB
Julien Carron
By reducing variance induced by gravitational lensing, likelihood-based de-lensing techniques have true potential to extract significantly more information from deep and high-resol…
CMB-S4: Foreground-Cleaning Pipeline Comparison for Measuring Primordial Gravitational Waves
Federico Bianchini, Dominic Beck, W. L. Kimmy Wu +6
We compare multiple foreground-cleaning pipelines for estimating the tensor-to-scalar ratio, , using simulated maps of the planned CMB-S4 experiment within the context of the So…
Detecting rotation from lensing in the CMB
Julien Carron, Enea di Dio, Ruth Durrer
An excellent estimate of the lensing signal is expected from the availability of deep and high-resolution polarization data in the near future. This is most important to allow for…
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…
CMB-S4: Iterative Internal Delensing and Constraints
Sebastian Belkner, Julien Carron, Louis Legrand +3
The tightest constraints on the tensor-to-scalar ratio can only be obtained after removing a substantial fraction of the lensing -mode sample variance. The planned CMB-S4 ex…