6 papers
Untangling dust emission and cosmic infrared background anisotropies with the scattering transform statistics
Srijita Sinha, Tuhin Ghosh, Erwan Allys +2
The template-fit approach is often used to separate Galactic dust emission from cosmic infrared background (CIB) anisotropies in low column density regions, under the a…
Bayesian imaging inverse problem with scattering transform
Sébastien Pierre, Erwan Allys, Pablo Richard +2
Bayesian imaging inverse problems in astrophysics and cosmology remain challenging, particularly in low-data regimes, due to complex forward operators and the frequent lack of well…
Separation of polarized dust emission in Planck observations with Scattering Transforms
Alexandros Tsouros, Elisa Russier, Erwan Allys +3
Polarized dust emission is a major astrophysical foreground contaminant of the cosmic microwave background polarization (CMB), which must be accurately measured to look for the fai…
Multiscale Turbulence Synthesis: Validation in 2D Hydrodynamics
Pierre Lesaffre, Jean-Baptiste Durrive, Jean Goossaert +5
Numerical simulations can follow the evolution of fluid motions through the intricacies of developed turbulence. However, they are rather costly to run, especially in 3D. In the pa…
Generative Models of 21cm EoR Lightcones with 3D Scattering Transforms
Ian Hothi, Erwan Allys, Benoit Semelin +1
The 21cm signal from the Epoch of Reionization (EoR) is observed as a three-dimensional data set known as a lightcone, consisting of a redshift (frequency) axis and two spatial sky…
Comparing the morphology of molecular clouds without supervision
Pablo Richard, Erwan Allys, François Levrier +2
Molecular clouds show complex structures reflecting their non-linear dynamics. Many studies investigating the bridge between their morphology and physical properties have shown the…