European Space Research

Sep 2, 2024 | academic.oup.com | European Space Agency |European Space Research

The Meteosat Third Generation - Imager 1 satellite, launched on 13 December 2022, features the first Lightning Imager instrument, a high-speed optical camera providing near real-time lightning detection over Europe and Africa. This study demonstrates that signatures of fireballs (i.e. bright meteors) can be detected in Lightning Imager data.

Feb 20, 2024 | academic.oup.com | European Space Agency |European Space Research |Département d’Astronomie |Université de Genève

We report the discovery of a brown dwarf orbiting a M1 host star. We first identified the brown dwarf within the Next Generation Transit Survey data, with supporting observations found in TESS sectors 11 and 38. We confirmed the discovery with follow-up photometry from the South African Astronomical Observatory, SPECULOOS-S, and TRAPPIST-S, and radial velocity measurements from HARPS, which allowed us to characterise the system.

Feb 7, 2024 | insu.hal.science | Beatriz Sanchez-Cano |Mark Lester |Olivier Witasse |European Space Research

Comet Siding Spring's influence on Mars' ionosphere at its closest approach Fichier principal EPSC-DPS2019-1465-1.pdf (249.36 Ko) Télécharger le fichier Origine : Fichiers produits par l'(les) auteur(s)

Jan 28, 2024 | insu.hal.science | Beatriz Sanchez-Cano |Mark Lester |Olivier Witasse |European Space Research

Communication Dans Un Congrès Année : 2018 Indirect identification of a low-altitude layer in the Martian nightside ionosphere during a space weather event with Mars Express-MARSIS radar data Origine : Fichiers produits par l'(les) auteur(s) insu-04422350 , version 1 (28-01-2024) HAL Id : insu-04422350 , version 1 BIBCODE : 2018EPSC...12..444S Beatriz Sanchez-Cano, Mark Lester, Olivier Witasse, Marco Cartacci, Pierre-Louis Blelly, et al.. Indirect identification of a low-altitude layer in the...

Aug 2, 2023 | academic.oup.com | European Space Agency |European Space Research

Black hole X-ray binaries are ideal environments to study the accretion phenomena in strong gravitational potentials. These systems undergo dramatic accretion state transitions and analysis of the X-ray spectra is used to probe the properties of the accretion disc and its evolution.