132 citations · 332 across the 9 of their papers we have counts for
10 papers
Self-Supervised Representation Learning: From Spectral Foundation Models to Auroral Emission Spectra
Matthieu Le Lain, Gaël Cessateur, Sébastien Lefèvre
Auroral spectrographs such as the Auroral Spectrograph In Skibotn (ASIS) record hundreds of thousands of emission spectra, but only a few hundred can be labelled by an expert. To e…
Interstellar Comet 3I/ATLAS: Evidence for Galactic Cosmic Ray Processing
R. Maggiolo, F. Dhooghe, G. Gronoff +2
Spectral observations of 3I/ATLAS (C/2025 N1) with JWST/NIRSpec and SPHEREx reveal an extreme CO2 enrichment (CO2/H2O = 7.6+-0.3) that is 4.5 sigma above solar system comet trends…
The Effect of Cosmic Rays on Cometary Nuclei: I Dose deposition
G. Gronoff, R. Maggiolo, G. Cessateur +9
Comets are small bodies thought to contain the most pristine material in the solar system. However, since their formation 4.5 Gy ago, they have been altered by different processes.…
Atmospheric Escape Processes and Planetary Atmospheric Evolution
Guillaume Gronoff, Phil Arras, Suleiman M Baraka +17
The habitability of the surface of any planet is determined by a complex evolution of its interior, surface, and atmosphere. The electromagnetic and particle radiation of stars dri…
Impact of radiogenic heating on the formation conditions of comet 67P/Churyumov-Gerasimenko
O. Mousis, A. Drouard, P. Vernazza +19
Because of the high fraction of refractory material present in comets, the heat produced by the radiogenic decay of elements such as aluminium and iron can be high enough to induce…
On-Orbit Degradation of Solar Instruments
A. BenMoussa, S. Gissot, U. Schühle +38
We present the lessons learned about the degradation observed in several space solar missions, based on contributions at the Workshop about On-Orbit Degradation of Solar and Space…
The place of the Sun among the Sun-like stars
A. I. Shapiro, W. Schmutz, G. Cessateur +1
Context. Monitoring of the photometric and chromospheric HK emission data series of stars similar to the Sun in age and average activity level showed that there is an empirical cor…
Extreme Ultraviolet Solar Irradiance during the rising phase of solar cycle 24 observed by PROBA2/LYRA
M. Kretzschmar, I. E. Dammasch, M. Dominique +3
The Large Yield Radiometer (LYRA) is a radiometer that has monitored the solar irradiance at high cadence and in four pass bands since January 2010. Both the instrument and its spa…
Coronal Temperature Maps from Solar EUV images: a Blind Source Separation Approach
T. Dudok de Wit, S. Moussaoui, C. Guennou +5
Multi-wavelength solar images in the EUV are routinely used for analysing solar features such as coronal holes, filaments, and flares. However, images taken in different bands ofte…
The Influence of Solar Flares on the Lower Solar Atmosphere: Evidence from the Na D Absorption Line Measured by GOLF/SOHO
G. Cessateur, M. Kretzschmar, T. Dudok de Wit +1
Solar flares presumably have an impact on the deepest layers of the solar atmosphere and yet the observational evidence for such an impact is scarce. Using ten years of measurement…