RECENT RESULTS FROM SCATTERING TRANSFORMS IN ASTROPHYSICS (ISM) AND COSMOLOGY

Erwan Allys – LPENS, Paris

New statistical descriptions related to the so-called scattering transforms recently obtained attractive results for several astrophysical applications. These statistics share ideas with convolutional neural networks, but do not require to be learned, and allow direct characterization of interactions between scales in non-linear processes. In this talk, I will introduce these statistical descriptions, and present the results obtained on interstellar turbulence (characterization, classification and denoising) as well as on the cosmological density field (inference of cosmological parameters and statistical syntheses).