8 papers · 1 filter
Recovering unbiased CMB polarization maps using modern ground-based experiments with minimal assumptions about atmospheric emission
Simon Biquard, Josquin Errard, Radek Stompor
We present a study of unbiased reconstruction of cosmic microwave background (CMB) polarization maps from data collected by modern ground-based observatories. Atmospheric emission…
Parameterizing Noise Covariance in Maximum-Likelihood Component Separation
Goureesankar Sathyanathan, Josquin Errard, Soumen Basak
We introduce a noise-aware extension to the parametric maximum-likelihood framework for component separation by modeling correlated noise as a harmonic-space power law. Th…
Cleaning Galactic foregrounds with spatially varying spectral dependence from CMB observations with \texttt{fgbuster}
Arianna Rizzieri, Clément Leloup, Josquin Errard +1
In the context of maximum-likelihood parametric component separation for next-generation full-sky CMB polarization experiments, we study the impact of fitting different spectral pa…
The Simons Observatory: Validation of reconstructed power spectra from simulated filtered maps for the Small Aperture Telescope survey
Carlos HervÃas-Caimapo, Kevin Wolz, Adrien La Posta +33
We present a transfer function-based method to estimate angular power spectra from filtered maps for cosmic microwave background (CMB) surveys. This is especially relevant for expe…
PROTOCALC, A W-band polarized calibrator for CMB Telescopes: application to Simons Observatory and CLASS
Gabriele Coppi, Nadia Dachlythra, Federico Nati +11
Current- and next-generation Cosmic Microwave Background (CMB) experiments will measure polarization anisotropies with unprecedented sensitivities. The need for high precision in t…
Validating a main beam treatment of parametric, pixel-based component separation in the context of CMB observations
Arianna Rizzieri, Josquin Errard, Radek Stompor
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 a…