{"id":2383,"date":"2021-03-31T09:10:30","date_gmt":"2021-03-31T07:10:30","guid":{"rendered":"https:\/\/project.inria.fr\/mastic\/?p=2383"},"modified":"2021-04-02T10:31:49","modified_gmt":"2021-04-02T08:31:49","slug":"cafe-in","status":"publish","type":"post","link":"https:\/\/project.inria.fr\/mastic\/cafe-in\/","title":{"rendered":"Caf\u00e9 In (15 avril 2021, 13h) : Comment poussent les champs magn\u00e9tiques c\u00e9lestes &#8211; Florence Marcotte (Castor)"},"content":{"rendered":"<p><strong>Caf\u00e9 In le jeudi 15 avril de 13h \u00e0 14h en direct, pr\u00e9sent\u00e9 par <a href=\"https:\/\/math.unice.fr\/~fmarcotte\/\">Florence Marcotte<\/a> (Castor).<\/strong><\/p>\n<p>Titre : Comment poussent les champs magn\u00e9tiques c\u00e9lestes<\/p>\n<p>R\u00e9sum\u00e9 :<\/p>\n<p>La Terre poss\u00e8de un champ magn\u00e9tique, gr\u00e2ce auquel s&rsquo;oriente l&rsquo;aiguille de la boussole. De tr\u00e8s nombreuses plan\u00e8tes, \u00e9toiles ou galaxies pr\u00e9sentent \u00e9galement des champs magn\u00e9tiques de structures et d&rsquo;intensit\u00e9s diverses : invisibles aux yeux, quelquefois tr\u00e8s difficiles \u00e0 d\u00e9tecter, ceux-ci jouent pourtant un r\u00f4le important dans l&rsquo;\u00e9volution de ces diff\u00e9rents corps c\u00e9lestes.<\/p>\n<p>Par quel m\u00e9canisme d&rsquo;amplification ces champs ont-il pu \u00eatre engendr\u00e9s \u00e0 partir des tr\u00e8s faibles champs magn\u00e9tiques de l&rsquo;Univers jeune ? Depuis environ un si\u00e8cle, l\u2019hypoth\u00e8se retenue par les physiciens est celle, propos\u00e9e par Joseph Larmor, de champs magn\u00e9tiques entretenus par \u00ab\u00a0effet dynamo\u00a0\u00bb dans de nombreux objets astrophysiques&#8230;<\/p>\n<p>&nbsp;<\/p>\n<p>La pr\u00e9sentation se fera en fran\u00e7ais et se d\u00e9roulera sur <a href=\"https:\/\/visio.pixees.fr\/b\/ben-2zi-2zp-gec\">BBB<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Caf\u00e9 In le jeudi 15 avril de 13h \u00e0 14h en direct, pr\u00e9sent\u00e9 par Florence Marcotte (Castor). Titre : Comment poussent les champs magn\u00e9tiques c\u00e9lestes R\u00e9sum\u00e9 : La Terre poss\u00e8de un champ magn\u00e9tique, gr\u00e2ce auquel s&rsquo;oriente l&rsquo;aiguille de la boussole. De tr\u00e8s nombreuses plan\u00e8tes, \u00e9toiles ou galaxies pr\u00e9sentent \u00e9galement des\u2026<\/p>\n<p> <a class=\"continue-reading-link\" href=\"https:\/\/project.inria.fr\/mastic\/cafe-in\/\"><span>Continuer la lecture<\/span><i class=\"crycon-right-dir\"><\/i><\/a> <\/p>\n","protected":false},"author":486,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,1],"tags":[],"class_list":["post-2383","post","type-post","status-publish","format-standard","hentry","category-cafein","category-evenements"],"_links":{"self":[{"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/posts\/2383","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/users\/486"}],"replies":[{"embeddable":true,"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/comments?post=2383"}],"version-history":[{"count":4,"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/posts\/2383\/revisions"}],"predecessor-version":[{"id":2387,"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/posts\/2383\/revisions\/2387"}],"wp:attachment":[{"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/media?parent=2383"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/categories?post=2383"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/project.inria.fr\/mastic\/wp-json\/wp\/v2\/tags?post=2383"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}