{"id":16913,"date":"2018-08-28T20:00:20","date_gmt":"2018-08-28T18:00:20","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=16913"},"modified":"2018-07-26T17:50:37","modified_gmt":"2018-07-26T15:50:37","slug":"le-rayonnement-cosmique-dun-systeme-stellaire-geant-se-dirige-vers-la-terre-avec-des-vents-intergalactiques","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/le-rayonnement-cosmique-dun-systeme-stellaire-geant-se-dirige-vers-la-terre-avec-des-vents-intergalactiques\/","title":{"rendered":"Le rayonnement cosmique d&rsquo;un syst\u00e8me stellaire g\u00e9ant se dirige vers la Terre avec des vents intergalactiques"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p>Un syst\u00e8me stellaire contenant deux soleils gigantesques envoie des rayons cosmiques dans l&rsquo;espace et les scientifiques de la NASA ont d\u00e9couvert que le rayonnement se dirige vers la Terre par des vents intergalactiques. Les observations \u00e0 haute \u00e9nergie dans la constellation m\u00e9ridionale tentaculaire de Carina avaient intrigu\u00e9 les scientifiques pendant un certain temps. Mais maintenant, un t\u00e9lescope orbital de la NASA a aid\u00e9 \u00e0 fixer la source d&rsquo;\u00e9nergie sur Eta Carinae, un syst\u00e8me \u00e0 deux \u00e9toiles \u00e0 environ 7 500 ann\u00e9es-lumi\u00e8re de la Terre.<\/p>\n<p>On sait d\u00e9j\u00e0 que des rayons d&rsquo;une \u00e9nergie sup\u00e9rieure \u00e0 1 milliard d&rsquo;\u00e9lectrons volts sont pulv\u00e9ris\u00e9s dans notre syst\u00e8me solaire. Cependant, le mouvement erratique de l&rsquo;\u00e9nergie et la taille de la grande \u00e9tendue rendaient auparavant difficile la localisation de certaines sources. La collision des vents stellaires \u00e0 l&rsquo;int\u00e9rieur d&rsquo;Eta Carinae, qui est entour\u00e9e d&rsquo;une n\u00e9buleuse de poussi\u00e8re de sablier, a maintenant \u00e9t\u00e9 confirm\u00e9e comme une des raisons des sch\u00e9mas \u00e9nerg\u00e9tiques dans la r\u00e9gion.<\/p>\n<p>\u00ab\u00a0Nous savons que les ondes de souffle des \u00e9toiles explos\u00e9es peuvent acc\u00e9l\u00e9rer les rayons cosmiques \u00e0 des vitesses comparables \u00e0 celles de la lumi\u00e8re, une incroyable pouss\u00e9e d&rsquo;\u00e9nergie\u00a0\u00bb, a d\u00e9clar\u00e9 l&rsquo;astrophysicien de la NASA Kenji Hamaguchi. \u00ab\u00a0Des processus similaires doivent se produire dans d&rsquo;autres environnements extr\u00eames. Notre analyse indique qu&rsquo;Eta Carinae en fait partie.\u00a0\u00bb<\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/B4PwWDNc9qM?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p>\u00c0 l&rsquo;aide du t\u00e9lescope NuStar, la NASA a \u00e9t\u00e9 en mesure de recueillir des donn\u00e9es sur les ondes de choc violentes caus\u00e9es par la collision de vents qui produisent des rayons cosmiques, dont certains ont \u00e9t\u00e9 vus en train de rebondir sur le champ magn\u00e9tique terrestre.<\/p>\n<p>\u00ab\u00a0Nous savons depuis un certain temps que la r\u00e9gion autour d&rsquo;Eta Carinae est la source d&rsquo;\u00e9mission \u00e9nerg\u00e9tique des rayons X \u00e0 haute \u00e9nergie et des rayons gamma \u00ab\u00a0, a d\u00e9clar\u00e9 Fiona Harrison, chercheuse au t\u00e9lescope NuSTAR. \u00ab\u00a0Mais jusqu&rsquo;\u00e0 ce que NuSTAR ait pu localiser les radiations&#8230; l&rsquo;origine \u00e9tait myst\u00e9rieuse.\u00a0\u00bb<\/p>\n<p>Lanc\u00e9 en 2012, l&rsquo;orbiteur NuStar a \u00e9t\u00e9 utilis\u00e9 pour cartographier certaines r\u00e9gions de l&rsquo;espace et servir de recensement des \u00e9toiles effondr\u00e9es. Le t\u00e9lescope a \u00e9galement \u00e9t\u00e9 charg\u00e9 d&rsquo;enqu\u00eater sur les trous noirs myst\u00e9rieux, et l&rsquo;ann\u00e9e derni\u00e8re, il a document\u00e9 le ph\u00e9nom\u00e8ne de \u00a0\u00bb consommation d&rsquo;\u00e9nergie \u00a0\u00bb dans la Voie lact\u00e9e.<\/p>\n<p>source :&nbsp;<a href=\"https:\/\/www.nasa.gov\/feature\/goddard\/2018\/nasas-nustar-mission-proves-superstar-eta-carinae-shoots-cosmic-rays\" target=\"_blank\" rel=\"noopener\">https:\/\/www.nasa.gov<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"16913\">(1785)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Un syst\u00e8me stellaire contenant deux soleils gigantesques envoie des rayons cosmiques dans l&rsquo;espace et les scientifiques de la NASA ont&#8230;<\/p>\n","protected":false},"author":1,"featured_media":16914,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Le rayonnement cosmique d'un syst\u00e8me stellaire g\u00e9ant se dirige vers la Terre avec des vents intergalactiques @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[22],"tags":[6754,1144,119,6751,6752,6753],"class_list":["post-16913","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-eta-carinae","tag-etoiles","tag-nasa","tag-nustar","tag-ondes-de-choc","tag-vents-stellaires","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/07\/eta-carinae.jpg?fit=850%2C531&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4oN","jetpack-related-posts":[{"id":4685,"url":"https:\/\/www.laterredufutur.com\/accueil\/lintensite-des-vents-solaires-au-plus-bas\/","url_meta":{"origin":16913,"position":0},"title":"L&rsquo;intensit\u00e9 des vents solaires au plus bas","author":"Admin","date":"3 d\u00e9cembre 2008","format":false,"excerpt":"L'intensit\u00e9 des vents solaires form\u00e9s de particules \u00e9ject\u00e9es de la couronne du soleil dans l'espace est au plus bas en un demi-si\u00e8cle. Ce ph\u00e9nom\u00e8ne pourrait r\u00e9duire le bouclier naturel prot\u00e9geant contre une partie des rayons cosmiques. L'intensit\u00e9 des vents solaires form\u00e9s de particules \u00e9ject\u00e9es de la couronne du soleil dans\u2026","rel":"","context":"Dans &quot;Soleil&quot;","block_context":{"text":"Soleil","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/soleil\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/vent-solaire.jpg?fit=792%2C612&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/vent-solaire.jpg?fit=792%2C612&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/vent-solaire.jpg?fit=792%2C612&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/vent-solaire.jpg?fit=792%2C612&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":17036,"url":"https:\/\/www.laterredufutur.com\/accueil\/voyager-2-detecte-une-augmentation-significative-du-rayonnement-cosmique\/","url_meta":{"origin":16913,"position":1},"title":"Voyager 2 d\u00e9tecte une augmentation significative du rayonnement cosmique","author":"Admin","date":"14 octobre 2018","format":false,"excerpt":"Six ans apr\u00e8s le d\u00e9part officiel de Voyager 1 du syst\u00e8me solaire, Voyager 1 semble indiquer que sa sonde compagnon, Voyager 2, se rapproche \u00e9galement de la fronti\u00e8re interstellaire. Selon la NASA, le vaisseau spatial a commenc\u00e9 \u00e0 d\u00e9tecter la m\u00eame augmentation de rayonnement cosmique que celle qui a frapp\u00e9\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/10\/voyager2.jpg?fit=1000%2C541&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/10\/voyager2.jpg?fit=1000%2C541&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/10\/voyager2.jpg?fit=1000%2C541&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/10\/voyager2.jpg?fit=1000%2C541&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":25822,"url":"https:\/\/www.laterredufutur.com\/accueil\/voyager-1-vers-linfini-et-au-dela\/","url_meta":{"origin":16913,"position":2},"title":"Voyager 1, \u00ab\u00a0Vers l&rsquo;infini et au del\u00e0\u00a0\u00bb&#8230;.","author":"Admin","date":"1 mai 2024","format":false,"excerpt":"Apr\u00e8s des mois de r\u00e9solution de probl\u00e8mes et de patience, Voyager 1 est de nouveau en mesure de communiquer avec la Terre. La vielle sonde spatiale de la NASA, situ\u00e9e \u00e0 environ 24 milliards de kilom\u00e8tres de la Terre, a commenc\u00e9 \u00e0 transmettre des donn\u00e9es brouill\u00e9es en novembre. Le 20\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/la-sonde-voyager-1.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/la-sonde-voyager-1.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/la-sonde-voyager-1.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/05\/la-sonde-voyager-1.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26658,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-dun-tunnel-interstellaire-entre-notre-systeme-solaire-et-dautres-galaxies\/","url_meta":{"origin":16913,"position":3},"title":"D\u00e9couverte d&rsquo;un tunnel interstellaire entre notre syst\u00e8me solaire et d&rsquo;autres galaxies","author":"Admin","date":"3 f\u00e9vrier 2025","format":false,"excerpt":"Des astronomes d\u00e9couvrent un r\u00e9seau de \u00ab tunnels \u00bb cosmiques reliant notre syst\u00e8me solaire \u00e0 des galaxies lointaines. Ces canaux, form\u00e9s par d'anciennes explosions d'\u00e9toiles, pourraient bouleverser notre compr\u00e9hension de l'espace interstellaire. Des astronomes viennent de confirmer l'existence d'un tunnel interstellaire entre notre syst\u00e8me solaire et des constellations lointaines Responsable\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/02\/tunnel-interstellaire.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/02\/tunnel-interstellaire.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/02\/tunnel-interstellaire.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/02\/tunnel-interstellaire.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4688,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-rayons-cosmiques-en-effervescence\/","url_meta":{"origin":16913,"position":4},"title":"Les Rayons Cosmiques en effervescence","author":"Admin","date":"5 d\u00e9cembre 2008","format":false,"excerpt":"Avec une intensit\u00e9 solaire et plus particuli\u00e8rement un vent solaire moins puissant, les rayons cosmiques passeront plus facilement. \u00a0 Notre plan\u00e8te est bombard\u00e9e de particules cosmiques de haute \u00e9nergie (des noyaux d'atomes) venant des autres \u00e9toiles et des supernovas. Ce sont des rayons cosmiques. La magn\u00e9tosph\u00e8re d\u00e9vie la plupart des\u2026","rel":"","context":"Dans &quot;Soleil&quot;","block_context":{"text":"Soleil","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/soleil\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/nuages2.jpg?fit=200%2C200&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":22386,"url":"https:\/\/www.laterredufutur.com\/accueil\/est-ce-que-les-rayons-cosmiques-sont-dangereux-pour-la-sante\/","url_meta":{"origin":16913,"position":5},"title":"Est ce que les rayons cosmiques sont dangereux pour la sant\u00e9 ?","author":"Admin","date":"15 avril 2021","format":false,"excerpt":"D'apr\u00e8s une \u00e9tude sur des souris, l'exposition aux rayons cosmiques aurait des cons\u00e9quences n\u00e9gatives sur le comportement, la m\u00e9moire, l'attention et la concentration. Ceci est vrai quand on est dans l'espace ! Irradiation : Qu'arriverait-il au cerveau d'un astronaute lors d'un voyage vers Mars (et retour)? Rien de bon, d'apr\u00e8s\u2026","rel":"","context":"Dans &quot;Divers&quot;","block_context":{"text":"Divers","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/divers\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/rayons-cosmique-soleil-terre.jpg?fit=1020%2C548&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/rayons-cosmique-soleil-terre.jpg?fit=1020%2C548&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/rayons-cosmique-soleil-terre.jpg?fit=1020%2C548&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/04\/rayons-cosmique-soleil-terre.jpg?fit=1020%2C548&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16913","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=16913"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16913\/revisions"}],"predecessor-version":[{"id":16915,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16913\/revisions\/16915"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/16914"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=16913"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=16913"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=16913"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}