{"id":2037,"date":"2026-09-14T01:10:00","date_gmt":"2026-09-13T16:10:00","guid":{"rendered":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-14-solar-1947-superflare-capacity-en\/"},"modified":"2026-09-14T01:10:00","modified_gmt":"2026-09-13T16:10:00","slug":"2026-09-14-solar-1947-superflare-capacity-en","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-14-solar-1947-superflare-capacity-en\/","title":{"rendered":"The giant 1947 sunspot could store superflare-scale energy"},"content":{"rendered":"<p><strong>2026-09-14 01:10 KST<\/strong><\/p>\n<p>One of the largest recorded sunspot groups had enough estimated magnetic capacity to enter the superflare range.<\/p>\n<p>Capacity is not occurrence probability, timing or proof of a historical eruption.<\/p>\n<h2>Method<\/h2>\n<p>Modern relationships between spot area, complexity and flare upper limits were extended to historical observations.<\/p>\n<h2>Scale<\/h2>\n<p>The group covered about 0.6% of the visible disk and spanned roughly 40 Earth diameters.<\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/onepress.co.kr\/wp-content\/uploads\/2026\/09\/solar-1947-superflare-capacity-en.png\" alt=\"The giant 1947 sunspot could store superflare-scale energy\" loading=\"lazy\" \/><figcaption class=\"op-briefing-image-caption\">This AI-generated image explains the topic; it is not a photograph of the actual site, experiment, animal or fossil.<\/figcaption><\/figure>\n<h2>Potential<\/h2>\n<p>Stored magnetic energy and the instability that releases it are separate requirements.<\/p>\n<h2>Earth impact<\/h2>\n<p>Radiation, coronal mass ejections and particles differ; direction and magnetic orientation control damage.<\/p>\n<h2>Next<\/h2>\n<p>Better historical magnetic reconstruction and stellar comparisons are needed; preparedness should use live official space-weather warnings.<\/p>\n<h2>Primary source and independent checks<\/h2>\n<p><a href=\"https:\/\/arxiv.org\/abs\/2603.09474\" target=\"_blank\" rel=\"noopener noreferrer\">Royal Society \ub17c\ubb38 \uc0ac\uc804 \uc6d0\uace0<\/a><\/p>\n<p><a href=\"https:\/\/www.mpg.de\/26962484\/sonne-neuer-hinweis-auf-superflares\" target=\"_blank\" rel=\"noopener noreferrer\">\ub9c9\uc2a4\ud50c\ub791\ud06c\ud559\ud68c \uc5f0\uad6c \ubc1c\ud45c<\/a><\/p>\n<p><a href=\"https:\/\/api.crossref.org\/works\/10.1098\/rsta.2025.0290\" target=\"_blank\" rel=\"noopener noreferrer\">Philosophical Transactions A \ub17c\ubb38 \uc11c\uc9c0<\/a><\/p>\n<h2>Read in other languages<\/h2>\n<p><a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-14-solar-1947-superflare-capacity-ko\/\">\ud55c\uad6d\uc5b4<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-14-solar-1947-superflare-capacity-en\/\">English<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-14-solar-1947-superflare-capacity-es\/\">Espa\u00f1ol<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-14-solar-1947-superflare-capacity-ja\/\">\u65e5\u672c\u8a9e<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-14-solar-1947-superflare-capacity-vi\/\">Ti\u1ebfng Vi\u1ec7t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>An extrapolation suggests the 1947 group could in principle power a flare of a few 10^34 ergs. No superflare occurred then, and this is not a forecast.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2037","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/2037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing"}],"about":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/types\/briefing"}],"wp:attachment":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=2037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}