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Seminario di Dipartimento virtuale: BeyondPlanck: a Bayesian framework for end-to-end Cosmic Microwave Background analysis.

SEMINARIO DIPARTIMENTO DI FISICA, VIA CELORIA 16, MILANO
Aula Consiglio VIRTUALE
https://zoom.us/my/aula.consiglio
27 Gennaio 2021 – 14:30
LORIS COLOMBO
Dipartimento di Fisica, Università di Milano

BeyondPlanck: a Bayesian framework for end-to-end Cosmic Microwave Background analysis.

The Cosmic Microwave Background (CMB) is a fundamental probe of the early Universe, and played a key role in shaping the current cosmological model.
State-ofthe-art measurements have been performed by the Planck observatory, which operated at the Sun-Earth L2 point between 2009 and 2013, significantly improving
our understanding of both the early stages of the Universe and of astrophysical emission from our Galaxy.
Planck data opened a new epoch of CMB experiments, in which observations are no longer limited by instrumental noise, but by our knowledge of instrumental systematics and of the sky itself.
In this talk I will describe the BeyondPlanck project, the first fully Bayesian end-to-end CMB analysis framework.
BeyondPlanck efficiently explores the joint posterior probability distribution of all parameters of interests (instrumental, astrophysical, cosmological), allowing a self consistent
propagation of all sources of error to the final science constraints. I will also present the first BeyondPlanck results, based on Planck Low Frequency Instrument data.

 

Students are cordially invited – Contact silvia.leoni@mi.infn.it

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27 gennaio 2021
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