{"id":4233,"date":"2015-07-29T13:02:36","date_gmt":"2015-07-29T18:02:36","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=4233"},"modified":"2015-07-29T09:56:25","modified_gmt":"2015-07-29T14:56:25","slug":"powerful-aurora-seen-18-5-light-years-away","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/powerful-aurora-seen-18-5-light-years-away\/","title":{"rendered":"Powerful aurora seen 18.5 light years away"},"content":{"rendered":"<div id=\"attachment_4234\" style=\"width: 360px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2015\/07\/BrownDwarf_02E_Aurora-798x1024.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-4234\" class=\"wp-image-4234\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2015\/07\/BrownDwarf_02E_Aurora-798x1024.jpg\" alt=\"An artist's impression of the aurorae on the brown dwarf LSR J1835. (Image credit: Chuck Carter and Gregg Hallinan\/Caltech)\" width=\"350\" height=\"449\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2015\/07\/BrownDwarf_02E_Aurora-798x1024.jpg 798w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2015\/07\/BrownDwarf_02E_Aurora-798x1024-233x300.jpg 233w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/a><p id=\"caption-attachment-4234\" class=\"wp-caption-text\">An artist&#8217;s impression of the aurorae on the brown dwarf LSR J1835. (Image credit: Chuck Carter and Gregg Hallinan\/Caltech)<\/p><\/div>\n<p>Astronomers have detected auroral activity, seen on Earth as the Northern and Southern Lights, on a stellar object, believed to be a brown dwarf, outside of our Solar System.\u00a0The team simultaneously detected radio and optical auroral emissions from the extrasolar body LSR J1853, located 5.67 parsecs or 18.5 light years away from our Sun. Additionally the aurorae of LSR J1853 are powered in a different way, and are much more powerful, than aurorae seen in our solar system.<\/p>\n<p>These findings suggest that aurorae may be more common of large-scale magnetospheres, the magnetic field enveloping a planet, and can produce brighter displays than those currently observed.<\/p>\n<p>The magnetic activity of our sun is powered by processes in their lower atmosphere. In LSR J1853 the aurorae are powered by processes originating further out, in the magnetosphere.<\/p>\n<p>The dissipated power of LSR J1853\u2019s auroral activity is at least 10,000 time greater than the energy produced on Jupiter.<\/p>\n<p><a href=\"http:\/\/nature.com\/articles\/doi:10.1038\/nature14619\" target=\"_blank\"><span style=\"text-decoration: underline;\">Original research paper<\/span><\/a>\u00a0published in\u00a0<em>Nature\u00a0<\/em>on\u00a0<strong>July 28<\/strong><span class=\"aBn\" tabindex=\"0\" data-term=\"goog_453723367\"><span class=\"aQJ\"><strong>, 2015<\/strong>.<\/span><\/span><\/p>\n<p><span style=\"text-decoration: underline;\"><em><strong>Names and affiliations of selected\u00a0authors<\/strong><\/em><\/span><\/p>\n<h4>Gregg Hallinan, California Institute of Technology, Pasadena, California, U.S.A.<\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Astronomers have detected auroral activity, seen on Earth as the Northern and Southern Lights, on a stellar object, believed to be a brown dwarf, outside of our Solar System.\u00a0The team simultaneously detected radio and optical auroral emissions from the extrasolar body LSR J1853, located 5.67 parsecs or 18.5 light years away from our Sun. Additionally [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":4234,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_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":""},"categories":[25],"tags":[2444,533,2368],"class_list":["post-4233","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest","tag-aurorae","tag-space","tag-stars"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2015\/07\/BrownDwarf_02E_Aurora-798x1024.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-16h","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/4233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=4233"}],"version-history":[{"count":1,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/4233\/revisions"}],"predecessor-version":[{"id":4235,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/4233\/revisions\/4235"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/4234"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=4233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=4233"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=4233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}