Colloque national CMB-France #3

Session

Session #3

21 juin 2022, 09:30

6. New model of Planck polarized dust maps using Cross Wavelet Scattering Transform

Dr Erwan Allys (LPENS)

21/06/2022 09:30

The fine measurement of the polarized emission of the CMB is intimately linked to the ability to separate it from the Galactic foregrounds. A specific difficulty for this goal is to take into account the spatial non-Gaussian structure of these foregrounds. In this work, we propose a new method that is able to extract the non-Gaussian features of the galactic dust emission from noisy...

1. High precision modeling of polarized signals

Léo Vacher (Institut de recherche en astrophysique et planétologie (IRAP))

21/06/2022 10:10

The modeling and removal of foregrounds poses a major challenge to searches for signals from inflation using the cosmic microwave background (CMB). In particular, the modeling of CMB foregrounds including various spatial averaging effects introduces multiple complications that will have to be accounted for in upcoming analyses.
In this work, we introduce the generalization of the intensity...

3. Statistical separation of dust and CIB with Wavelet Phase Harmonics (WPH)

Constant Auclair (LPENS)

21/06/2022 11:20

Modelling the emission of Galactic dust is a main challenge for CMB polarization experiments. Current models make use of Planck total intensity data plagued by the difficulty of separating dust emission from the Cosmic Infrared Background (CIB). We address this outstanding difficulty from a new perspective compared to previous attempts. We will show that dust and CIB may be statistically...

10. Polarized foregrounds

Jacques Delabrouille (IN2P3)

21/06/2022 12:00

I will present new maps of polarised synchrotron and dust emission extracted from Planck and WMAP data.