activity
20222025
most citedCMB-S4: Iterative Internal Delensing and Constraints

40 citations · 119 across the 7 of their papers we have counts for

collaborators

7 papers

astro-ph.CO2025

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…

astro-ph.CO2024

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…

astro-ph.IM2024

: 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…

astro-ph.CO2023★ 40 cited

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…

astro-ph.CO2023★ 39 cited

Improved cosmic microwave background (de-)lensing using general spherical harmonic transforms

Martin Reinecke, Sebastian Belkner, Julien Carron

Deep cosmic microwave background polarization experiments allow a very precise internal reconstruction of the gravitational lensing signal in pricinple. For this aim, likelihood-ba…

astro-ph.CO2022★ 28 cited

Foreground Separation and Constraints on Primordial Gravitational Waves with the PICO Space Mission

Ragnhild Aurlien, Mathieu Remazeilles, Sebastian Belkner +13

PICO is a concept for a NASA probe-scale mission aiming to detect or constrain the tensor to scalar ratio , a parameter that quantifies the amplitude of inflationary gravity wav…

astro-ph.CO2022★ 12 cited

Snowmass 2021 CMB-S4 White Paper

Kevork Abazajian, Arwa Abdulghafour, Graeme E. Addison +353

This Snowmass 2021 White Paper describes the Cosmic Microwave Background Stage 4 project CMB-S4, which is designed to cross critical thresholds in our understanding of the origin a…