{"id":22515,"date":"2021-05-12T17:00:51","date_gmt":"2021-05-12T16:00:51","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=22515"},"modified":"2021-05-12T17:00:51","modified_gmt":"2021-05-12T16:00:51","slug":"des-emissions-de-plasma-detectees-par-voyager-1","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/des-emissions-de-plasma-detectees-par-voyager-1\/","title":{"rendered":"Des \u00e9missions de plasma d\u00e9tect\u00e9es par Voyager 1"},"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>La sonde Voyager 1 a d\u00e9tect\u00e9 des \u00e9missions de plasma en dehors de notre syst\u00e8me solaire. Une d\u00e9couverte qui pourrait indiquer la pr\u00e9sence d\u2019un autre soleil au-del\u00e0 de l\u2019h\u00e9liopause.<\/p>\n<p>Perdu dans l\u2019h\u00e9liopause (partie de l\u2019univers hors de port\u00e9e des vents solaires), l\u2019objet volant de la NASA aurait en effet indiqu\u00e9 aux scientifiques un bourdonnement constant \u00e0 tr\u00e8s basse fr\u00e9quence depuis quelques ann\u00e9es. Comme le d\u00e9taille la revue Nature dans un article tr\u00e8s complet (en anglais), cette vibration \u00e0 3 kHz serait en r\u00e9alit\u00e9 la preuve de la pr\u00e9sence d\u2019\u00e9missions de plasma.<\/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>En 2012, Voyager 1 est devenue la premi\u00e8re sonde du milieu interstellaire tr\u00e8s local. Voyager 1 a donn\u00e9 des estimations ponctuelles de la densit\u00e9 du plasma. Des \u00e9tudes ant\u00e9rieures de la densit\u00e9 du plasma reposaient sur la d\u00e9tection d&rsquo;\u00e9v\u00e9nements discrets d&rsquo;oscillation du plasma d\u00e9clench\u00e9s avant les chocs se propageant vers l&rsquo;ext\u00e9rieur du Soleil, qui \u00e9taient utilis\u00e9s pour d\u00e9duire la fr\u00e9quence du plasma et, par cons\u00e9quent, la densit\u00e9. Nous pr\u00e9sentons la d\u00e9tection d&rsquo;une classe d&rsquo;\u00e9mission d&rsquo;ondes de plasma \u00e0 bande \u00e9troite tr\u00e8s faible dans les donn\u00e9es Voyager 1 qui persiste \u00e0 partir de 2017 et permet une mesure r\u00e9guli\u00e8rement \u00e9chantillonn\u00e9e de la densit\u00e9 du plasma interstellaire avec une distance d&rsquo;\u00e9chantillonnage moyenne de 0,03 UA. Nous trouvons des fluctuations de densit\u00e9 \u00e0 l&rsquo;\u00e9chelle UA qui retracent la turbulence interstellaire entre les \u00e9pisodes d&rsquo;oscillations plasmatiques pr\u00e9c\u00e9demment d\u00e9tect\u00e9es. Les m\u00e9canismes possibles pour l&rsquo;\u00e9mission \u00e0 bande \u00e9troite comprennent les oscillations de plasma excit\u00e9es thermiquement et le bruit quasi thermique, et ils pourraient \u00eatre clarifi\u00e9s par de nouvelles d\u00e9couvertes de Voyager ou une future mission interstellaire. La persistance de l&rsquo;\u00e9mission sugg\u00e8re que Voyager 1 peut \u00eatre en mesure de continuer \u00e0 suivre la densit\u00e9 du plasma interstellaire en l&rsquo;absence d&rsquo;\u00e9v\u00e9nements d&rsquo;oscillation de plasma g\u00e9n\u00e9r\u00e9s par un choc.<\/p>\n<p>sources : <a href=\"https:\/\/www.journaldugeek.com\/2021\/05\/11\/espace-voyager-1-detecte-des-emissions-de-plasma-hors-de-notre-systeme-solaire\/\" rel=\"noopener\" target=\"_blank\">https:\/\/www.journaldugeek.com\/<\/a> \/ <a href=\"https:\/\/www.nature.com\/articles\/s41550-021-01363-7\" rel=\"noopener\" target=\"_blank\">https:\/\/www.nature.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"22515\">(448)<\/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>La sonde Voyager 1 a d\u00e9tect\u00e9 des \u00e9missions de plasma en dehors de notre syst\u00e8me solaire. Une d\u00e9couverte qui pourrait&#8230;<\/p>\n","protected":false},"author":1,"featured_media":19163,"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_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":"Des \u00e9missions de plasma d\u00e9tect\u00e9es par #Voyager 1 @laterredufutur.com Terra Projects","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},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[117,670,2227,7637],"class_list":["post-22515","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-espace","tag-etoile","tag-plasma","tag-voyager-1","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/voyager-pioneer.jpg?fit=1051%2C640&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-5R9","jetpack-related-posts":[{"id":25822,"url":"https:\/\/www.laterredufutur.com\/accueil\/voyager-1-vers-linfini-et-au-dela\/","url_meta":{"origin":22515,"position":0},"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":17036,"url":"https:\/\/www.laterredufutur.com\/accueil\/voyager-2-detecte-une-augmentation-significative-du-rayonnement-cosmique\/","url_meta":{"origin":22515,"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":20632,"url":"https:\/\/www.laterredufutur.com\/accueil\/percee-dans-le-voyage-spatial-un-moteur-a-plasma-de-160-000km-h-promet-de-reduire-les-voyages-vers-mars\/","url_meta":{"origin":22515,"position":2},"title":"Perc\u00e9e dans le voyage spatial: un moteur \u00e0 plasma de 160 000km\/h promet de r\u00e9duire les voyages vers Mars","author":"Admin","date":"3 avril 2020","format":false,"excerpt":"Les moteurs \u00e0 plasma \u00e0 fusion nucl\u00e9aire sont l'avenir d'un voyage spatial rapide et efficace, a d\u00e9clar\u00e9 \u00e0 Express.co.uk le PDG d'une entreprise qui a construit un prototype de propulseur \u00e0 plasma. La technologie de pointe des engins spatiaux promet de r\u00e9duire les temps de trajet et de surpasser les\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\/2020\/03\/vaisseau-spatial-mars-fusion-nucleaire.jpg?fit=1200%2C900&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/03\/vaisseau-spatial-mars-fusion-nucleaire.jpg?fit=1200%2C900&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/03\/vaisseau-spatial-mars-fusion-nucleaire.jpg?fit=1200%2C900&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/03\/vaisseau-spatial-mars-fusion-nucleaire.jpg?fit=1200%2C900&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/03\/vaisseau-spatial-mars-fusion-nucleaire.jpg?fit=1200%2C900&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":24998,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-sonde-solaire-parker-a-repere-lorigine-des-vents-solaires\/","url_meta":{"origin":22515,"position":3},"title":"La sonde solaire Parker a rep\u00e9r\u00e9 l&rsquo;origine des vents solaires","author":"Admin","date":"8 juin 2023","format":false,"excerpt":"Des champs magn\u00e9tiques \u00e9tranges pr\u00e8s de la surface du soleil alimentent les vents de gaz. Un engin spatial plongeant dans l'atmosph\u00e8re du soleil a r\u00e9v\u00e9l\u00e9 la source probable des puissantes explosions de plasma dans les vents solaires rapides. Loin du soleil, le vent solaire est un plasma n\u00e9buleux et turbulent.\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\/2023\/06\/sonde-parket-vent-solaire.jpg?fit=1030%2C580&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/06\/sonde-parket-vent-solaire.jpg?fit=1030%2C580&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/06\/sonde-parket-vent-solaire.jpg?fit=1030%2C580&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/06\/sonde-parket-vent-solaire.jpg?fit=1030%2C580&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":21258,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-temperature-du-plasma-solaire-plonge-faut-il-sinquieter\/","url_meta":{"origin":22515,"position":4},"title":"La temp\u00e9rature du plasma solaire plonge &#8211; faut-il s&rsquo;inqui\u00e9ter?","author":"Admin","date":"25 ao\u00fbt 2020","format":false,"excerpt":"Message de David Archibald, la temp\u00e9rature du plasma solaire a plong\u00e9 \u00e0 un nouveau le plus bas depuis le relev\u00e9 depuis 50 ans. Par co\u00efncidence ou non, la temp\u00e9rature de l'h\u00e9misph\u00e8re sud de la Terre a \u00e9galement plong\u00e9 au cours des deux derni\u00e8res semaines. Quand commen\u00e7ons-nous \u00e0 nous inqui\u00e9ter? Figure\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/08\/anomalies-temperatures-2020.png?fit=602%2C270&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/08\/anomalies-temperatures-2020.png?fit=602%2C270&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/08\/anomalies-temperatures-2020.png?fit=602%2C270&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":24877,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-cascade-de-plasma-de-100000-km-de-long-a-jailli-du-soleil\/","url_meta":{"origin":22515,"position":5},"title":"Une \u00ab\u00a0cascade de plasma\u00a0\u00bb de 100000 km de long a jailli du soleil","author":"Admin","date":"16 avril 2023","format":false,"excerpt":"Une \u00e9tonnante \"cascade\" solaire a \u00e9t\u00e9 rep\u00e9r\u00e9e \u00e0 la surface du Soleil. L'image, prise par l'astrophotographe Eduardo Schaberger Poupeau le 9 mars 2023, montre un mur de plasma projet\u00e9 \u00e0 \"quelque 100 000 kilom\u00e8tres\" - vers l'espace, a pr\u00e9cis\u00e9 Eduardo Schaberger Poupeau. C'est assez \u00e9lev\u00e9 pour engloutir environ huit Terres.\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\/2023\/04\/cascade-de-plasma-sur-le-soleil-1.jpg?fit=1024%2C415&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/04\/cascade-de-plasma-sur-le-soleil-1.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/04\/cascade-de-plasma-sur-le-soleil-1.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/04\/cascade-de-plasma-sur-le-soleil-1.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/22515","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=22515"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/22515\/revisions"}],"predecessor-version":[{"id":22516,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/22515\/revisions\/22516"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/19163"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=22515"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=22515"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=22515"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}