Scattering Transforms in astrophysics, application to components separation

par Dr Erwan Allys (LP-ENS)

lundi 15 mai 2023, 14:00 → 15:00 Europe/Paris

Amphi Charpak

New statistical descriptions related to the so-called Scattering Transform recently obtained attractive results for several astrophysical applications. These statistics share ideas with convolutional neural networks, but do not require to be learned, allowing for a direct characterization of interactions between scales in non-linear processes. In this talk, I will introduce these statistical descriptions, and give an overview of the different results obtained recently. I will focus in particular on the ongoing work about components separation, in particular in the scientific context of CMB B-modes detection beyond the Galactic foreground emission.

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https://cern.zoom.us/j/69928701833?pwd=eVZrbkd0SDhEQkVFNk1iNi9hdUZQUT09
 

LPNHE_15_05.pdf