{"id":231,"date":"2019-04-24T08:17:25","date_gmt":"2019-04-24T07:17:25","guid":{"rendered":"https:\/\/sites-lira.obspm.fr\/helisol\/?p=231"},"modified":"2019-04-24T08:19:13","modified_gmt":"2019-04-24T07:19:13","slug":"seminaire-de-kostas-moraitis-computation-visualization-and-applications-of-relative-magnetic-helicity-in-the-sun","status":"publish","type":"post","link":"https:\/\/sites-lira.obspm.fr\/helisol\/2019\/04\/24\/seminaire-de-kostas-moraitis-computation-visualization-and-applications-of-relative-magnetic-helicity-in-the-sun\/","title":{"rendered":"S\u00e9minaire de Kostas Moraitis: \u00ab\u00a0Computation, visualization, and applications of relative magnetic helicity in the Sun\u00a0\u00bb"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Jeudi 25 Avril \u00e0 15h, le p\u00f4le de physique solaire du LESIA acceuillera    Kostas Moraitis, post-doctorant au LESIA dans le cadre du projet H\u00e9liSol, et qui quittera prochainement le projet.  <br>        <br>       Orateur:\u00a0 Kostas Moraitis (LESIA)<br>       <br>       Titre: \u00ab\u00a0Computation, visualization, and applications of relative       magnetic helicity in the Sun\u00a0\u00bb <br>       <br>       Date: Jeudi 25 Avril \u00e0 15h <br>       Lieu: Salle de r\u00e9union du b\u00e2timent 14, Observatoire de Paris, Site de Meudon<br>       <br>       Abstract: This talk summarizes three recent works regarding magnetic       helicity, which is a measure of the geometrical complexity of a 3D magnetic field and a conserved quantity of ideal MHD. The first work is about an accurate method to compute relative magnetic helicity, the appropriate helicity for most natural plasmas, in spherical geometry, and especially in finite volumes. The second work deals with a method to visualize relative magnetic helicity through a density proxy called field line helicity. In the third  work, after studying the evolution of relative magnetic helicity       in a solar active region, we discuss the possibility of indicating  AR eruptivity with helicity-related quantities.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Jeudi 25 Avril \u00e0 15h, le p\u00f4le de physique solaire du LESIA acceuillera Kostas Moraitis, post-doctorant au LESIA dans le cadre du projet H\u00e9liSol, et qui quittera prochainement le projet. Orateur:\u00a0 Kostas Moraitis (LESIA) Titre: \u00ab\u00a0Computation, visualization, and applications of &hellip; <a href=\"https:\/\/sites-lira.obspm.fr\/helisol\/2019\/04\/24\/seminaire-de-kostas-moraitis-computation-visualization-and-applications-of-relative-magnetic-helicity-in-the-sun\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":18,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-231","post","type-post","status-publish","format-standard","hentry","category-presentation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>S\u00e9minaire de Kostas Moraitis: &quot;Computation, visualization, and applications of relative magnetic helicity in the Sun&quot; - HeliSol<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sites-lira.obspm.fr\/helisol\/2019\/04\/24\/seminaire-de-kostas-moraitis-computation-visualization-and-applications-of-relative-magnetic-helicity-in-the-sun\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"S\u00e9minaire de Kostas Moraitis: &quot;Computation, visualization, and applications of relative magnetic helicity in the Sun&quot; - HeliSol\" \/>\n<meta property=\"og:description\" content=\"Jeudi 25 Avril \u00e0 15h, le p\u00f4le de physique solaire du LESIA acceuillera Kostas Moraitis, post-doctorant au LESIA dans le cadre du projet H\u00e9liSol, et qui quittera prochainement le projet. 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