Jul 5 – 10, 2021
Europe/Rome timezone

New Planck tSZ map and its cosmological analysis

Jul 5, 2021, 5:46 PM
14m
Talk in the parallel session Cosmic Backgrounds from radio to far-IR Cosmic Backgrounds from Radio to Far-IR

Speakers

Hideki Tanimura (L'Institut d'Astrophysique Spatiale (IAS))Dr Nabila Aghanim (Institut d'Astrophysique spatiale)Dr Marian Douspis (Institut d'Astrophysique spatiale)

Description

The thermal Sunyaev-Zeldovich (tSZ) effect is produced by the inverse Compton scattering of cosmic microwave background (CMB) photons by hot electrons, particularly in galaxies clusters. It has been used as a powerful probe to constrain the cosmological parameters, given its particular sensitivity to sigma8 and omega_m.

We present a new all-sky tSZ map constructed from the latest Planck PR4 data released in 2020 with the MILCA algorithm. We will review the obtained improvements in this tSZ map in terms of signal-to-noise and resolution with respect to the map produced by the Planck collaboration in 2015. We will also present the results of the cosmological analysis with this new tSZ map.

Primary authors

Hideki Tanimura (L'Institut d'Astrophysique Spatiale (IAS)) Dr Nabila Aghanim (Institut d'Astrophysique spatiale) Dr Marian Douspis (Institut d'Astrophysique spatiale)

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