Colloque national CMB-France #3

Session

Session #4

21 juin 2022, 14:00

8. Dust polarization spectral dependence from Planck HFI data

Alessia Ritacco (INAF, LPENS)

21/06/2022 14:00

The search for the primordial B-modes in the cosmic microwave background (CMB) polarization depends on the separation from the brighter dust foreground signal. In this context, the characterization of the spatial variations of the spectral energy distribution (SED) of thermal dust in polarization has become a critical subject of study.
This contribution aims at presenting a power spectra...

7. Detection and reconstruction of SZ effect with Deep Learning

Dr Victor Bonjean (IAC)

21/06/2022 14:40

The Planck collaboration has extensively used the six Planck HFI frequency maps to detect the Sunyaev-Zel’dovich effect (SZ) with dedicated methods, for example by applying (i) component separation to construct a full-sky map of the y parameter or (ii) matched multi-filters to detect galaxy clusters via their hot gas. Although powerful, these methods may still introduce biases in the detection...

2. Direct measurement of the hydrostatic bias

Miren Muñoz Echeverría (LPSC)

21/06/2022 15:20

The NIKA2 Sunyaev Zel’dovich Large Program (LPSZ) aims at studying 45 clusters of galaxies at intermediate and high redshift (0.5 < z < 0.9). A joint analysis of the thermal SZ (tSZ) effect on CMB at millimetre wavelength with the NIKA2 camera and in X-ray with XMM-Newton satellite permits the reconstruction of clusters’ thermodynamical properties and hydrostatic masses. These mass estimates...