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7 papers · 1 filter
Vulcan and anomalous displacement of Mercury's perihelion
S. P. Pogossian
In this paper, I re-examine the question of a possible explanation of the anomalous advance of Mercury's perihelion by the existence of the hypothetical planet Vulcan proposed by L…
Inversion of sea surface currents from satellite-derived SST-SSH synergies with 4DVarNets
Ronan Fablet, Bertrand Chapron, Julien Le Sommer +1
Satellite altimetry is a unique way for direct observations of sea surface dynamics. This is however limited to the surface-constrained geostrophic component of sea surface velocit…
Guided Unsupervised Learning by Subaperture Decomposition for Ocean SAR Image Retrieval
Nicolae-Cătălin Ristea, Andrei Anghel, Mihai Datcu +1
Spaceborne synthetic aperture radar (SAR) can provide accurate images of the ocean surface roughness day-or-night in nearly all weather conditions, being an unique asset for many g…
Non-Gaussian modelling and statistical denoising of Planck dust polarization full-sky maps using scattering transforms
J. -M. Delouis, E. Allys, E. Gauvrit +1
Scattering transforms have been successfully used to describe dust polarization for flat-sky images. This paper expands this framework to noisy observations on the sphere with the…
Multimodal 4DVarNets for the reconstruction of sea surface dynamics from SST-SSH synergies
Ronan Fablet, Quentin Febvre, Bertrand Chapron
Due to the irregular space-time sampling of sea surface observations, the reconstruction of sea surface dynamics is a challenging inverse problem. While satellite altimetry provide…
Dust polarization spectral dependence from Planck HFI data. Turning point on CMB polarization foregrounds modelling
Alessia Ritacco, François Boulanger, Vincent Guillet +4
The search for the primordial B-modes of the cosmic microwave background (CMB) relies on the separation from the brighter foreground dust signal. In this context, the characterisat…