Jürgen Knödlseder - IRAP Anthropogenic activities are increasingly perturbing the Earth system, pushing it out of the safe operating zone that forms the basis of human civilisations. As emphasised by the CNRS ethics committee, research agents need to take responsibility for the environmental impacts of their activities, and work on their reduction. In this presentation […]
Cristina Pallanca - University of Bologna The dense stellar environments of globular clusters make them the main factories of compact objects. Among the several interesting classes of such systems, binary millisecond pulsars (MSPs) stand out as the most variegated. In fact, MSPs are rapidly spinning neutron stars formed in binary systems by mass accretion from […]
Soutenance de thèse de Axel LAZZAROTTO (Salle Coriolis) Résumé de la thèse : Les marques de la rotation stellaire sont omniprésentes lors de l’observation des étoiles. En effet, celles-ci se retrouvent dans tous les types d’observables ; de la spectrométrie par le biais des profils de raies, à l’astérosismologie par le biais des fréquences de […]
Soutenance de thèse de Mostafa BELLA (Amphi du centre de recherche scientifique ibnou zohr, Faculté des sciences d'Agadir, B.P8106 Cité Dakhla, 80000 Agadir, Maroc) Résumé de la thèse Le but de cette thèse est de développer des méthodes de séparation de sources adaptées aux domaines de l'astrophysique et de l'audio. La séparation de sources a […]
Lieu : Amphi Cotton, bâtiment 3A, Université Paul Sabatier de Toulouse
Martin Turbet - LAB, Bordeaux La Terre, Vénus et Mars ont aujourd'hui des atmosphères et climats en apparence radicalement différents. Alors que la Terre possède les conditions idéales pour maintenir des océans, mers et lacs d'eau liquide, Vénus est une véritable fournaise, et Mars un monde glacial. Mais en a-t-il toujours été ainsi ? Quand […]
Benjamin Crinquant - IRAP A variety of astrophysical phenomena can only be explained as being powered by black holes. Black-hole activity can manifest itself through the launching of a relativistic jet, or the production of short, intense gamma-ray flares. Recent progress in instrumentation has allowed us to probe these processes with unprecedented detail. For example, […]
Soutenance de HDR de Hassan Sabbah (Salle de Conférence) Résumé de la HDR Large carbonaceous molecules such as polycyclic aromatic hydrocarbons (PAHs) and fullerenes are prevalent in astrophysical environments.They play a significant role in the physics and chemistry of regions where stars and planets form. The investigation into the formation of specific molecules within these families, […]
Andrea Chiavassa - Lagrange, Nice Stars exhibit intricate and stochastic patterns on their surfaces due to convective heat transport, known as granulation. Convection manifests in the surface layers as a particular pattern of downflowing cooler plasma and bright areas where hot plasma rises. Convection is a difficult process to understand, because it is non-local and […]
Jay McMahon - UC Boulder In this talk I will briefly review the past missions to asteroids including NEAR, Hayabusa, Dawn, and Hayabusa2. I will then delve a bit deeper talking about OSIRIS-REx and DART - two recent NASA missions that I was a part of. For each of these missions, I will show some […]