{"id":38,"date":"2019-11-14T00:17:32","date_gmt":"2019-11-14T00:17:32","guid":{"rendered":"http:\/\/blogs.oregonstate.edu\/noblegaslab\/?page_id=38"},"modified":"2019-11-14T19:47:11","modified_gmt":"2019-11-14T19:47:11","slug":"testing-the-supernova-hypothesis","status":"publish","type":"page","link":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/testing-the-supernova-hypothesis\/","title":{"rendered":"Testing the Supernova Hypothesis"},"content":{"rendered":"\n<p>Kevin Konrad, David Graham<\/p>\n\n\n\n<table class=\"wp-block-table\"><tbody><tr><td><strong><em>Testing the Supernova Hypothesis Using 3He and 60Fe in Marine Sediments:&nbsp;<\/em><\/strong>This work builds off of the groundbreaking research of Wallner et al. (2016) and&nbsp; Ludwig et al. (2016) on the existence of supernova ejecta deposited in deep sea sediment cores and ferromanganese deposits. This research projects focuses on using 3He concentrations archived in deep-sea sediment cores to help define the existence, timing and environmental impact of supernova ejecta deposited within the last five million years. Since&nbsp;3He in sediments is dominated by the presence of interplanetry dust particles and is not supplied in significant amounts from supernova ejecta, the new results would provide further support for the supernova hypothesis if there is no relationship between 3He and 60Fe. In addition, I seek to provide a refined, higher-resolution age model for these deep-sea cores.<\/td><\/tr><\/tbody><\/table>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"593\" height=\"1024\" src=\"https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/ELT-49-53-All-Cores-Snip-593x1024.png\" alt=\"\" class=\"wp-image-39\" srcset=\"https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/ELT-49-53-All-Cores-Snip-593x1024.png 593w, https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/ELT-49-53-All-Cores-Snip-174x300.png 174w, https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/ELT-49-53-All-Cores-Snip.png 613w\" sizes=\"auto, (max-width: 593px) 100vw, 593px\" \/><figcaption> Full core photographs of ELT 49-53 (Southern Indian Ocean). This image covers over nine meters of sediment and millions of years of Earth&#8217;s history.<br><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"882\" height=\"1024\" src=\"https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/Fields2020-Astro-882x1024.png\" alt=\"\" class=\"wp-image-40\" srcset=\"https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/Fields2020-Astro-882x1024.png 882w, https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/Fields2020-Astro-258x300.png 258w, https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/Fields2020-Astro-768x892.png 768w, https:\/\/osu-wams-blogs-uploads.s3.amazonaws.com\/blogs.dir\/3568\/files\/2019\/11\/Fields2020-Astro.png 914w\" sizes=\"auto, (max-width: 882px) 100vw, 882px\" \/><figcaption>A record of 60Fe detection in Ferromanganese crusts (top) and low-accumulation rate sediment cores (bottom) as a function of time. From:  Fields, B. D., Ellis, J. R., Binns, W. R., Breitschwerdt, D., de Nolfo, G. A., Diehl, R., &#8230; &amp; Fitoussi, C. (2019). Near-Earth Supernova Explosions: Evidence, Implications, and Opportunities.&nbsp;<em>arXiv preprint arXiv:1903.04589<\/em>. <\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>Kevin Konrad, David Graham Testing the Supernova Hypothesis Using 3He and 60Fe in Marine Sediments:&nbsp;This work builds off of the groundbreaking research of Wallner et al. (2016) and&nbsp; Ludwig et al. (2016) on the existence of supernova ejecta deposited in deep sea sediment cores and ferromanganese deposits. This research projects focuses on using 3He concentrations &hellip; <a href=\"https:\/\/blogs.oregonstate.edu\/noblegaslab\/testing-the-supernova-hypothesis\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Testing the Supernova Hypothesis<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":10014,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-38","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/pages\/38","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/users\/10014"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/comments?post=38"}],"version-history":[{"count":2,"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/pages\/38\/revisions"}],"predecessor-version":[{"id":42,"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/pages\/38\/revisions\/42"}],"wp:attachment":[{"href":"https:\/\/blogs.oregonstate.edu\/noblegaslab\/wp-json\/wp\/v2\/media?parent=38"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}