Scattering transforms on the sphere, application to large scale structure modelling - Archive ouverte HAL
Communication Dans Un Congrès Année : 2024

Scattering transforms on the sphere, application to large scale structure modelling

Résumé

Scattering transforms are a new type of summary statistics recently developed for the study of highly non-Gaussian processes, which have been shown to be very promising for astrophysical studies. In particular, they allow one to build generative models of complex non-linear fields from a limited amount of data. In the context of upcoming cosmological surveys, the extension of these tools to spherical data is necessary. We develop scattering transforms on the sphere and focus on the construction of maximum-entropy generative models of astrophysical fields. The quality of the generative models, both statistically and visually, is very satisfying, which therefore open up a wide range of new applications for future cosmological studies.

Dates et versions

hal-04661927 , version 1 (25-07-2024)

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Louise Mousset, Erwan Allys, Matthew A Price, Jonathan Aumont, Jean-Marc Delouis, et al.. Scattering transforms on the sphere, application to large scale structure modelling. 58th Rencontres de Moriond on Cosmology, Mar 2024, La Thuile, Italy. ⟨hal-04661927⟩
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