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Le 5 juillet 2019 De 10h30 à 12h00 Khyati Malhan Stockholm University “Tidal stellar streams” have recently sparked burgeoning interest among the community. These structures, that are formed by the tidal disruption of globular clusters or satellite galaxies by the potential...
Le 28 juin 2019 De 10h30 à 12h00 Frédéric Marin Observatoire astronomique de Strasbourg Worldships are hypothetical, large, self-contained spacecrafts for crewed interstellar travel, taking centuries to reach other worlds. Due to their crewed nature, size and long trip...
Le 21 juin 2019 De 10h30 à 12h00 Jun Yang University of Utah The overall objective of my research is to improve understanding of the properties and structures of high-mass X-ray binary (XRB) pulsars, by bringing together a large set of observations spanning the observable...
Le 14 juin 2019 De 10h30 à 12h00 Indranil Banik University of Bonn Binary stars separated by >3 kAU have orbital accelerations smaller than those typically experienced by stars in the outskirts of galaxies, whose galactocentric motions evince sometimes very large...
Le 7 juin 2019 De 10h30 à 12h00 George I. Melikidze University of Zielona GoraRotation Powered Pulsars have an active magnetosphere where pair plasma can accelerate in localized regions of high electric fields, the so called gap regions. To explain observational features of...
Le 24 mai 2019 De 10h30 à 12h00 Dipanjan Mitra National Centre for Radio Astrophysics, Tata Institute of Fundamental Research Collective plasma emissions in astrophysics are referred to as coherent emission. Radio emission from pulsars are coherent in nature,and observations...
Le 17 mai 2019 De 10h30 à 12h00 Giuseppina Battaglia Instituto de Astrofísica de Canarias The dwarf galaxies inhabiting the Local Group (LG) can be studied from a currently unique perspective, that of resolved stellar populations. It is for these systems that with present-day...
Le 26 avril 2019 De 10h30 à 12h00 Françoise Genova ObAS Le Ministère de l'Enseignement Supérieur, de la Recherche et de l'Innovation a publié en juillet 2018 son "Plan National pour la Science Ouverte". C'est un sujet "chaud" au niveau politique depuis plusieurs années,...
Le 12 avril 2019 De 10h30 à 12h00 Sébastien Derrière ObAS Besides its well-known services like SIMBAD and VizieR, a number of new services haveemerged in the recent years, like the cross-match service and CDS portal, but also morerecent ones which people might not be aware...
Le 5 avril 2019 De 10h30 à 12h00 Christian Fendt MPIA Heidelberg I will present MHD simulations investigating the launching of astrophysical jets. The simulations treat the time-dependent evolution of the accretion-ejection structure and the subsequent collimation of the disk...