{"id":2665,"date":"2015-04-29T08:29:24","date_gmt":"2015-04-29T08:29:24","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=2665"},"modified":"2015-05-31T08:02:20","modified_gmt":"2015-05-31T08:02:20","slug":"le-filament-solaire-geant-du-27-avril","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/","title":{"rendered":"Le filament solaire g\u00e9ant du 27 avril"},"content":{"rendered":"

Le 27 avril le Soleil <\/a>semblait tr\u00e8s calme : visuellement on ne voyait que quelques petites taches, comme le confirme l’image r\u00e9alis\u00e9e par le satellite solaire SDO <\/a>(Solar Dynamics Observatory<\/em>).<\/p>\n

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

La situation \u00e9tait pourtant bien diff\u00e9rente en observant notre \u00e9toile en H-alpha,\u00a0une raie d\u2019\u00e9mission particuli\u00e8re de l\u2019atome d\u2019hydrog\u00e8ne situ\u00e9e dans le spectre visible \u00e0 656,3 nanom\u00e8tres.<\/p>\n

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

Un filament g\u00e9ant (sa taille \u00e9tait comparable \u00e0 la distance Terre-Lune, soit pr\u00e8s de 400 000 km) se d\u00e9veloppait dans l’h\u00e9misph\u00e8re nord.<\/p>\n

Les filaments solaires sont des projections de gaz incandescents (on parle de plasmas), principalement de l’hydrog\u00e8ne et du calcium. Quand la rotation du Soleil <\/a>entra\u00eene ces filaments sur le bord, on les surnomme alors des protub\u00e9rances.<\/p>\n

Comme les taches solaires<\/a>, les filaments et les protub\u00e9rances sont parfois \u00e0 l’origine d’\u00e9jections de masse coronale : les particules \u00e9nerg\u00e9tiques solaires sont alors projet\u00e9es dans l’espace et leur arriv\u00e9e dans l’atmosph\u00e8re terrestre est \u00e0 l’origine des aurores bor\u00e9ales<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"

Le 27 avril le Soleil semblait tr\u00e8s calme : visuellement on ne voyait que quelques petites taches, comme le confirme l’image r\u00e9alis\u00e9e par le satellite solaire SDO (Solar Dynamics Observatory). La situation \u00e9tait pourtant bien diff\u00e9rente en observant notre \u00e9toile en H-alpha,\u00a0une raie d\u2019\u00e9mission particuli\u00e8re de l\u2019atome d\u2019hydrog\u00e8ne situ\u00e9e dans le spectre visible \u00e0 656,3 … Continuer la lecture de Le filament solaire g\u00e9ant du 27 avril<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":2671,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[395,394,832,1003,1004,321,577,97,261],"class_list":["post-2665","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-aurore-boreale","tag-ejection-de-masse-coronale","tag-filament-solaire","tag-h-alpha","tag-hydrogene","tag-protuberance","tag-sdo","tag-soleil","tag-tache-solaire"],"yoast_head":"\nLe filament solaire g\u00e9ant du 27 avril<\/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\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le filament solaire g\u00e9ant du 27 avril\" \/>\n<meta property=\"og:description\" content=\"Le 27 avril le Soleil semblait tr\u00e8s calme : visuellement on ne voyait que quelques petites taches, comme le confirme l’image r\u00e9alis\u00e9e par le satellite solaire SDO (Solar Dynamics Observatory). La situation \u00e9tait pourtant bien diff\u00e9rente en observant notre \u00e9toile en H-alpha,\u00a0une raie d\u2019\u00e9mission particuli\u00e8re de l\u2019atome d\u2019hydrog\u00e8ne situ\u00e9e dans le spectre visible \u00e0 656,3 … Continuer la lecture de Le filament solaire g\u00e9ant du 27 avril →\" \/>\n<meta property=\"og:url\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/\" \/>\n<meta property=\"og:site_name\" content=\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\" \/>\n<meta property=\"article:published_time\" content=\"2015-04-29T08:29:24+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2015-05-31T08:02:20+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/filament_soleil3.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"867\" \/>\n\t<meta property=\"og:image:height\" content=\"574\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Jean-Baptiste FELDMANN\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Jean-Baptiste FELDMANN\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/\",\"name\":\"Le filament solaire g\u00e9ant du 27 avril\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/filament_soleil3.jpg\",\"datePublished\":\"2015-04-29T08:29:24+00:00\",\"dateModified\":\"2015-05-31T08:02:20+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#\/schema\/person\/62b391b709c307783237b759b62731ea\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/04\/29\/le-filament-solaire-geant-du-27-avril\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/filament_soleil3.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/04\/filament_soleil3.jpg\",\"width\":867,\"height\":574},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/feldmann\/\",\"name\":\"CIELMANIA : le blog de Jean-Baptiste FELDMANN, photographe du ciel\",\"description\":\""J'ai en moi un besoin terrible. 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