Explanipedia

Validating a main beam treatment of parametric, pixel-based component separation in the context of CMB observations Open

A. Rizzieri, Josquin Errard, R. Stompor · 2024

We implement a simple, main beam correction in the maximum-likelihood, parametric component separation approach, which allows on accounting for different beamwidths of input maps at different frequencies without any preprocessing. We valid…

Pixel domain implementation of the Minimally Informed CMB MAp foreground\n Cleaning method Open

Magdy Morshed, A. Rizzieri, C. Leloup, Josquin Errard, R. Stompor · 2024

High fidelity separation of astrophysical foreground contributions from the\ncosmic microwave background (CMB) signal has been recognized as one of the main\nchallenges of modern CMB data analysis, and one which needs to be addressed in\na…

Characterizing cosmic birefringence in the presence of Galactic foregrounds and instrumental systematic effects Open

Baptiste Jost, Josquin Errard, R. Stompor · 2023

We study a possibility of constraining isotropic cosmic birefringence with\nhelp of cosmic microwave background polarisation data in the presence of\npolarisation angle miscalibration without relying on any assumptions about the\nGalactic …

Characterising cosmic birefringence in the presence of galactic foregrounds and instrumental systematic effects Open

Baptiste Jost, Josquin Errard, R. Stompor · 2022

We study a possibility of constraining isotropic cosmic birefringence with help of cosmic microwave background polarisation data in the presence of polarisation angle miscalibration without relying on any assumptions about the Galactic for…

Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey Open

C. Baccigalupi, S. Chapman, K. Cheung, Y. Chinone, T. Elleflot , et al. · 2022

We report an improved measurement of the degree-scale cosmic microwave background B -mode angular-power spectrum over 670 deg 2 sky area at 150 GHz with P olarbear . In the original analysis of the data, errors in the angle measurement of …

Improved Upper Limit on Degree-scale CMB B-mode Polarization Power from the 670 Square-degree POLARBEAR Survey Open

S. Adachi, Tylor Adkins, Mario Faúndez, Kam Arnold, C. Baccigalupi , et al. · 2022

We report an improved measurement of the degree-scale cosmic microwave background B -mode angular-power spectrum over 670 deg 2 sky area at 150 GHz with P olarbear . In the original analysis of the data, errors in the angle measurement of …

Improved Gibbs samplers for cosmic microwave background power spectrum estimation Open

Grégory Ducrocq, Nicolás Chopin, Josquin Errard, R. Stompor · 2022

We study different variants of the Gibbs sampler algorithm from the perspective of their applicability to the estimation of power spectra of the cosmic microwave background (CMB) anisotropies. These include approaches studied earlier in th…

MAPPRAISER: A massively parallel map-making framework for multi-kilo pixel CMB experiments Open

H. El Bouhargani, D. Beck, Josquin Errard, Laura Grigori, R. Stompor · 2021

Forthcoming cosmic microwave background (CMB) polarized anisotropy experiments have the potential to revolutionize our understanding of the Universe and fundamental physics. The sought-after, tale-telling signatures will be however distrib…

Amended Gibbs samplers for Cosmic Microwave Background power spectrum estimation Open

Grégory Ducrocq, Nicolás Chopin, Josquin Errard, R. Stompor · 2021

We study different variants of the Gibbs sampler algorithm from the perspective of their applicability to the estimation of power spectra of the cosmic microwave background (CMB) anisotropies. We focus on approaches which aim at reducing t…

Framework for analysis of next generation, polarized CMB data sets in the presence of Galactic foregrounds and systematic effects Open

C. Vergès, Josquin Errard, R. Stompor · 2021

Reaching the sufficient sensitivity to detect primordial B-modes requires modern CMB polarisation experiments to rely on new technologies, necessary for the deployment of arrays thousands of detectors with a broad frequency coverage and op…

A Measurement of the Degree-scale CMB B-mode Angular Power Spectrum with Polarbear Open

S. Adachi, M. A. O. Aguilar Faúndez, Kam Arnold, C. Baccigalupi, Darcy Barron , et al. · 2020

We present a measurement of the B -mode polarization power spectrum of the cosmic microwave background (CMB) using data taken from 2014 July to 2016 December with the Polarbear experiment. The CMB power spectra are measured using observati…

Impact of polarized galactic foreground emission on CMB lensing reconstruction and delensing of B-modes Open

D. Beck, Josquin Errard, R. Stompor · 2020

Next generation CMB experiments such as CMB-S4 aim at measuring the CMB\nlensing potential at sub-percent precision where most of the constraining power\nwill come from CMB polarization. We investigate the prospects of achieving this\ngoal…

Internal Delensing of Cosmic Microwave Background Polarization -Modes with the POLARBEAR Experiment Open

S. Adachi, M. A. O. Aguilar Faúndez, Y. Akiba, Aamir Ali, Kam Arnold , et al. · 2020

Using only cosmic microwave background polarization data from the polarbear experiment, we measure B-mode polarization delensing on subdegree scales at more than 5σ significance. We achieve a 14% B-mode power variance reduction, the highes…

Deployment of Polarbear-2A Open

Daisuke Kaneko, S. Adachi, P. A. R. Ade, M. Aguilar Faúndez, Y. Akiba , et al. · 2020

Accelerating linear system solvers for time domain component separation of cosmic microwave background data Open

Jan Papež, Laura Grigori, R. Stompor · 2020

Component separation is one of the key stages of any modern, cosmic microwave background (CMB) data analysis pipeline. It is an inherently non-linear procedure and typically involves a series of sequential solutions of linear systems with …

Results of gravitational lensing and primordial gravitational waves from the POLARBEAR experiment Open

Y. Chinone, S. Adachi, PAR Ade, Mario Aguilar, Y. Akiba , et al. · 2020

P OLARBEAR is a Cosmic Microwave Background radiation (CMB) polarization experiment that is located in the Atacama Desert in Chile. The scientific goals of the experiment are to characterize the B -mode signal from gravitational lensing, a…

Cross-correlation of CMB polarization lensing with High-z submillimeter Herschel-ATLAS galaxies Open

M. A. O. Aguilar Faúndez, Kam Arnold, C. Baccigalupi, Darcy Barron, D. Beck , et al. · 2019

We report a 4.8σ measurement of the cross-correlation signal between the cosmic microwave background (CMB) lensing convergence reconstructed from measurements of the CMB polarization made by the Polarbear experiment and the infrared-select…

Evidence for the cross-correlation between cosmic icrowave background polarization lensing from Polarbear and cosmic shear from Subaru Hyper Suprime-Cam Open

Toshiya Namikawa, Y. Chinone, Hironao Miyatake, Masamune Oguri, Ryuichi Takahashi , et al. · 2019

We present the first measurement of cross-correlation between the lensing potential, reconstructed from cosmic microwave background (CMB) polarization data, and the cosmic shear field from galaxy shapes. This measurement is made using data…

Scratches from the Past: Inflationary Archaeology through Features in the Power Spectrum of Primordial Fluctuations Open

Anže Slosar, Kevork N. Abazajian, Muntazir Abidi, Peter Adshead, Zeeshan Ahmed , et al. · 2019

Inflation may provide unique insight into the physics at the highest available energy scales that cannot be replicated in any realistic terrestrial experiment. Features in the primordial power spectrum are generically predicted in a wide c…

Characterizing bias on large scale CMB -modes after Galactic foregrounds cleaning Open

Josquin Errard, R. Stompor · 2019

We study the performance of a typical near-future full sky CMB space mission,\naiming at the characterization of the large scale $B$-modes polarization\nanisotropies with precision on $r\\sim 0.001$, after a map-based parametric\ncleaning …

The POLARBEAR-2 and Simons Array Focal Plane Fabrication Status Open

Benjamin Westbrook, P. A. R. Ade, Mario Aguilar, Y. Akiba, Kam Arnold , et al. · 2018

Iterative map-making with two-level preconditioning for polarized Cosmic Microwave Background data sets Open

Giuseppe Puglisi, C. Baccigalupi, R. Stompor, Giulio Fabbian, Luca Heltai , et al. · 2018

An estimation of the sky signal from streams of Time Ordered Data (TOD) acquired by Cosmic Microwave Background (\cmb) experiments is one of the most important steps in the context of \cmb data analysis referred to as the map-making proble…

Temperature calibration of the E and B Experiment Open

François Aubin, Asad M. Aboobaker, P. A. R. Ade, Derek Araujo, C. Baccigalupi , et al. · 2017

The E and B Experiment (EBEX) is a balloon-borne polarimeter designed to measure the polarization of the cosmic microwave background radiation and to characterize the polarization of galactic dust. EBEX was launched December 29, 2012 and c…

A Measurement of the Cosmic Microwave Background B-mode Polarization Power Spectrum at Subdegree Scales from Two Years of POLARBEAR Data Open

P. A. R. Ade, Mario Aguilar, Y. Akiba, Kam Arnold, C. Baccigalupi , et al. · 2017

We report an improved measurement of the cosmic microwave background B-mode polarization power spectrum with the Polarbear experiment at 150 GHz. By adding new data collected during the second season of observations (2013-2014) to re-analy…

Making maps of cosmic microwave background polarization for <i>B</i>-mode studies: the POLARBEAR example Open

D. Poletti, Giulio Fabbian, M. Le Jeune, J. Peloton, Kam Arnold , et al. · 2016

Analysis of cosmic microwave background (CMB) datasets typically requires some filtering of the raw time-ordered data. For instance, in the context of ground-based observations, filtering is frequently used to minimize the impact of low fr…

Forecasting performance of CMB experiments in the presence of complex foreground contaminations Open

R. Stompor, Josquin Errard, D. Poletti · 2016

We present a new, semi-analytic framework for estimating the level of residuals present in CMB maps derived from multi-frequency Cosmic Microwave Background (CMB) data and forecasting their impact on cosmological parameters. The data are a…

The Simons Array CMB polarization experiment Open

N. Stebor, P. A. R. Ade, Y. Akiba, C. Aleman, Kam Arnold , et al. · 2016

© 2016 SPIE. The Simons Array is a next generation cosmic microwave background (CMB) polarization experiment whose science target is a precision measurement of the B-mode polarization pattern produced both by inflation and by gravitational…

Next generation sub-millimeter wave focal plane array coupling concepts: an ESA TRP project to develop multichroic focal plane pixels for future CMB polarization experiments Open

N. Trappe, M. Bucher, P. de Bernardis, G. de Zotti, Prafulla Deo , et al. · 2016

The main objective of this activity is to develop new focal plane coupling array concepts and technologies that optimise the coupling from reflector optics to the large number of detectors for next generation sub millimetre wave telescopes…

MAXIMUM LIKELIHOOD FOREGROUND CLEANING FOR COSMIC MICROWAVE BACKGROUND POLARIMETERS IN THE PRESENCE OF SYSTEMATIC EFFECTS Open

Chaoyun Bao, C. Baccigalupi, B. Gold, Shaul Hanany, A. H. Jaffe , et al. · 2016

We extend a general maximum likelihood foreground estimation for cosmic microwave background (CMB) polarization data to include estimation of instrumental systematic effects. We focus on two particular effects: frequency band measurement u…

Maximum Likelihood Foreground Cleaning for Cosmic Microwave Background Polarimeters in the Presence of Systematic Effects Open

Chaoyun Bao, C. Baccigalupi, B. Gold, Shaul Hanany, Andrew H. Jaffe , et al. · 2015

We extend a general maximum likelihood foreground estimation for cosmic microwave background polarization data to include estimation of instrumental systematic effects. We focus on two particular effects: frequency band measurement uncerta…

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