{"id":986,"date":"2014-10-22T07:45:47","date_gmt":"2014-10-22T07:45:47","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=986"},"modified":"2014-11-03T06:24:04","modified_gmt":"2014-11-03T06:24:04","slug":"lenorme-tache-solaire-ar-2192","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/22\/lenorme-tache-solaire-ar-2192\/","title":{"rendered":"L’\u00e9norme tache solaire AR 2192"},"content":{"rendered":"

La plus grosse tache du cycle solaire en cours (le cycle n\u00b0 24 qui a d\u00e9but\u00e9 en 2008) est apparue il y a quelques jours \u00e0 la surface de notre \u00e9toile.<\/p>\n

\"sol\"<\/a><\/p>\n

Voil\u00e0 qui va ravir tous les adorateurs du Soleil<\/a>, lequel nous offre un spectacle inattendu. Alors que le pic d’activit\u00e9 solaire atteint en 2013 \u00e9tait consid\u00e9r\u00e9 par les scientifiques comme le plus faible depuis un si\u00e8cle, AR 2192 (AR signifie Active Region<\/em>, les num\u00e9ros \u00e9tant attribu\u00e9s par ordre d\u2019apparition des taches par la NOAA, National Oceanic and Atmospheric Administration<\/em>)\u00a0vient nous rappeler que nous avons encore beaucoup \u00e0 apprendre au sujet de notre \u00e9toile.<\/p>\n

Les taches sur le Soleil <\/a>sont des r\u00e9gions d’intense activit\u00e9 magn\u00e9tique pouvant g\u00e9n\u00e9rer des \u00e9ruptions solaires avec \u00e9jection de masse coronale qui s’ach\u00e8vent en beaut\u00e9 sur Terre par des aurores bor\u00e9ales. La taille de la tache AR 2192 est sup\u00e9rieure \u00e0 celle de la plan\u00e8te gazeuse g\u00e9ante Jupiter <\/a>!<\/p>\n

Attention, l’observation et la photographie du Soleil <\/a>ne sont possibles qu’avec un filtre sp\u00e9cial. L’image ci-dessus a \u00e9t\u00e9 r\u00e9alis\u00e9e le 22 octobre au matin avec un bo\u00eetier Finepix HS20 et son zoom de 720 mm de focale prot\u00e9g\u00e9 par un filtre ND 400.<\/p>\n

Mise \u00e0 jour du 24 octobre<\/strong> : l’image ci-dessous a \u00e9t\u00e9 r\u00e9alis\u00e9e ce matin juste apr\u00e8s le lever du Soleil<\/a>. Remarquez comme le bord de notre \u00e9toile est d\u00e9form\u00e9 par la turbulence. Notez \u00e9galement la pr\u00e9sence d’un discret rayon vert<\/a> au sommet de l’astre. Selon le site The Sun Today<\/em><\/a>, cette tache solaire est d\u00e9sormais la plus grosse observ\u00e9e depuis AR 6368 en novembre 1990, il y a 24 ans !<\/p>\n

\"sol1\"<\/a><\/p>\n

 <\/p>\n

Mise \u00e0 jour du 26 octobre<\/strong> : image r\u00e9alis\u00e9e \u00e0 l’aube alors que le Soleil passe derri\u00e8re une girouette de l’h\u00f4pital de Nuits-Saint-Georges en C\u00f4te-d’or.<\/p>\n

\"sol3\"<\/a><\/p>\n

 <\/p>\n

Cette image a \u00e9t\u00e9 publi\u00e9e sur le site Spaceweather<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

La plus grosse tache du cycle solaire en cours (le cycle n\u00b0 24 qui a d\u00e9but\u00e9 en 2008) est apparue il y a quelques jours \u00e0 la surface de notre \u00e9toile. Voil\u00e0 qui va ravir tous les adorateurs du Soleil, lequel nous offre un spectacle inattendu. Alors que le pic d’activit\u00e9 solaire atteint en 2013 … Continuer la lecture de L’\u00e9norme tache solaire AR 2192<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":1012,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[466,395,465,392,89,212,90,257,146,114,97,261],"class_list":["post-986","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-ar-2192","tag-aurore-boreale","tag-cycle-solaire","tag-eruption-solaire","tag-etoile","tag-girouette","tag-jupiter","tag-noaa","tag-nuits-saint-georges","tag-planete","tag-soleil","tag-tache-solaire"],"yoast_head":"\nL'\u00e9norme tache solaire AR 2192<\/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:\/\/blogs.futura-sciences.com\/feldmann\/2014\/10\/22\/lenorme-tache-solaire-ar-2192\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L'\u00e9norme tache solaire AR 2192\" \/>\n<meta property=\"og:description\" content=\"La plus grosse tache du cycle solaire en cours (le cycle n\u00b0 24 qui a d\u00e9but\u00e9 en 2008) est apparue il y a quelques jours \u00e0 la surface de notre \u00e9toile. 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