{"id":5617,"date":"2016-05-23T15:22:42","date_gmt":"2016-05-23T15:22:42","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=5617"},"modified":"2016-05-30T15:41:22","modified_gmt":"2016-05-30T15:41:22","slug":"recit-medieval-decrit-lexplosion-de-sn-1006","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/05\/23\/recit-medieval-decrit-lexplosion-de-sn-1006\/","title":{"rendered":"Un r\u00e9cit m\u00e9di\u00e9val d\u00e9crit l&#8217;explosion de SN 1006"},"content":{"rendered":"<p><strong>Trois chercheurs allemands se sont pench\u00e9s sur un texte du c\u00e9l\u00e8bre savant Avicenne concernant la plus puissante supernova jamais observ\u00e9e, SN 1006.<\/strong><\/p>\n<p>Le 1er mai 1006 une \u00e9toile explosa dans la constellation australe du Loup, atteignant un \u00e9clat qu\u2019aucune autre supernova ne d\u00e9passa (magnitude d\u2019environ -7, l\u2019\u00e9quivalent lumineux \u00a0d\u2019un gros <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/20\/19-septembre-le-coq-regarde-le-croissant-de-lune\/\" target=\"_blank\">croissant de Lune<\/a>), ce qui explique que son apparition soit mentionn\u00e9e dans des textes europ\u00e9ens, chinois, japonais, \u00e9gyptiens et irakiens. La supernova SN 1006\u00a0resta visible sans instrument pendant des mois puis son \u00e9clat faiblit et on l\u2019oublia.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/64f2MEM67Qg\" frameborder=\"0\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Les restes de cette gigantesque explosion cosmique (visibles sur l&#8217;image ci-dessous r\u00e9alis\u00e9e par le <a href=\"http:\/\/chandra.harvard.edu\/photo\/2008\/sn1006c\/\" target=\"_blank\">t\u00e9lescope Chandra<\/a>) furent retrouv\u00e9s dans le milieu des ann\u00e9es 1960 par les radioastronomes (puis en 1976 dans le domaine visible avec un t\u00e9lescope) sous la forme d\u2019un r\u00e9manent situ\u00e9 \u00e0 une distance d\u2019un peu plus de 7.000 ann\u00e9es-lumi\u00e8re.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/sn-1.jpg\"  rel=\"lightbox[5617] attachment wp-att-5619\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5619\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/sn-1-450x281.jpg\" alt=\"sn\" width=\"450\" height=\"281\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/sn-1-450x281.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/sn-1-768x480.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/sn-1-1024x640.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/sn-1.jpg 1440w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Trois scientifiques allemands viennent de publier sur <a href=\"http:\/\/arxiv.org\/abs\/1604.03798\" target=\"_blank\">arXiv <\/a>l&#8217;analyse d&#8217;un texte d&#8217;Avicenne (980-1037).\u00a0\u00a0Philosophe, \u00e9crivain, m\u00e9decin et scientifique m\u00e9di\u00e9val persan, Avicenne, connu \u00e9galement sous le nom d&#8217;Ibn Sina, s&#8217;int\u00e9ressa \u00e0 de nombreuses sciences comme l&#8217;astronomie, l&#8217;alchimie, la chimie ou encore la psychologie.<!--more--><\/p>\n<p>Dans un texte arabe extrait du <em>Kit\u00e2b al-Shif\u00e2<\/em>, un ouvrage traitant de<em>\u00a0<\/em>philosophie, de physique, d&#8217;astronomie et de m\u00e9t\u00e9orologie, Avicenne d\u00e9crit la supernova SC 1006 comme un objet c\u00e9leste temporaire immobile dans le ciel (&#8220;une \u00e9toile parmi les \u00e9toiles&#8221;) qui fut visible \u00e0 l&#8217;\u0153il nu pendant pr\u00e8s de trois mois, faiblissant progressivement avant de dispara\u00eetre. Les trois chercheurs allemands ont \u00e9galement trouv\u00e9 dans ce texte des indications de coloration de la supernova : apparue avec une teinte\u00a0jaune-verd\u00e2tre, elle &#8220;jetait des \u00e9tincelles&#8221; au maximum de son \u00e9clat avant de prendre une couleur cr\u00e8me.<\/p>\n<p>L&#8217;explosion de SN 1006 nous a laiss\u00e9 un r\u00e9manent de supernova sous la forme d&#8217;une bulle d\u2019hydrog\u00e8ne dont le diam\u00e8tre apparent \u00e9quivaut \u00e0 celui de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/04\/05\/pleine-lune-a-turin-derriere-basilique-de-superga\/\" target=\"_blank\">Pleine Lune<\/a> et qui continue de s&#8217;\u00e9tendre \u00e0 la vitesse de 10 millions de km\/h.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Trois chercheurs allemands se sont pench\u00e9s sur un texte du c\u00e9l\u00e8bre savant Avicenne concernant la plus puissante supernova jamais observ\u00e9e, SN 1006. Le 1er mai 1006 une \u00e9toile explosa dans la constellation australe du Loup, atteignant un \u00e9clat qu\u2019aucune autre supernova ne d\u00e9passa (magnitude d\u2019environ -7, l\u2019\u00e9quivalent lumineux \u00a0d\u2019un gros croissant de Lune), ce qui &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/05\/23\/recit-medieval-decrit-lexplosion-de-sn-1006\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Un r\u00e9cit m\u00e9di\u00e9val d\u00e9crit l&#8217;explosion de SN 1006<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":5619,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[84],"tags":[1625,1268,1626,1627,1178,1179,403],"class_list":["post-5617","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ciel-etoile","tag-avicenne","tag-constellation-du-loup","tag-ibn-sina","tag-kitab-al-shifa","tag-remanent","tag-sn-1006","tag-supernova"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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