{"id":2183,"date":"2026-09-23T01:09:00","date_gmt":"2026-09-22T16:09:00","guid":{"rendered":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-23-black-hole-jet-threshold-en\/"},"modified":"2026-09-23T01:09:00","modified_gmt":"2026-09-22T16:09:00","slug":"2026-09-23-black-hole-jet-threshold-en","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-23-black-hole-jet-threshold-en\/","title":{"rendered":"Whether ten or millions of solar masses, black-hole jets returned near a 2% threshold"},"content":{"rendered":"<p><strong>2026-09-23 01:09 KST<\/strong><\/p>\n<p>The 17 September Nature Astronomy study offers observational evidence that black holes may switch jets at the same point across enormous mass scales.<\/p>\n<p>The 2% is not 2% of a black hole\u2019s mass or brightness; it is the accretion rate relative to the Eddington balance between gravity and radiation pressure.<\/p>\n<h2>What was observed?<\/h2>\n<p>The team gathered 20 tidal disruption events and used ten for which both accretion rate and radio-outflow timing could be constrained.<\/p>\n<h2>Two jet phases<\/h2>\n<p>An early outflow can appear above the Eddington rate. A physically distinct delayed jet emerged as feeding fell to about 0.02 Eddington.<\/p>\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/onepress.co.kr\/wp-content\/uploads\/2026\/09\/black-hole-jet-threshold-en.png\" alt=\"Whether ten or millions of solar masses, black-hole jets returned near a 2% threshold\" loading=\"lazy\" \/><figcaption class=\"op-briefing-image-caption\">This AI-generated image explains the topic; it is not a photograph of an actual event, observation or field site.<\/figcaption><\/figure>\n<h2>Why is it surprising?<\/h2>\n<p>Stellar black holes change state over days or months, whereas ordinary supermassive systems evolve over millennia. Tidal disruptions compress that evolution into years.<\/p>\n<h2>What is not settled?<\/h2>\n<p>The sample is small and accretion rates come from disk models, not direct meters. More radio and X-ray follow-up must test whether the threshold predicts new jets.<\/p>\n<h2>Primary source and independent checks<\/h2>\n<p><a href=\"https:\/\/www.nature.com\/articles\/s41550-026-02951-1\" target=\"_blank\" rel=\"noopener noreferrer\">Nature Astronomy \uc6d0 \ub17c\ubb38<\/a><\/p>\n<p><a href=\"https:\/\/www.ias.edu\/news\/ias-scholar-reveals-universal-rule-black-hole-burps\" target=\"_blank\" rel=\"noopener noreferrer\">Institute for Advanced Study \uc5f0\uad6c \uc124\uba85<\/a><\/p>\n<p><a href=\"https:\/\/github.com\/adellej\/tde_spectra_fit\" target=\"_blank\" rel=\"noopener noreferrer\">\uacf5\uac1c \ubd84\uc11d \ucf54\ub4dc<\/a><\/p>\n<h2>Read in other languages<\/h2>\n<p><a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-23-black-hole-jet-threshold-ko\/\">\ud55c\uad6d\uc5b4<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-23-black-hole-jet-threshold-en\/\">English<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-23-black-hole-jet-threshold-es\/\">Espa\u00f1ol<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-23-black-hole-jet-threshold-ja\/\">\u65e5\u672c\u8a9e<\/a> \u00b7 <a href=\"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-23-black-hole-jet-threshold-vi\/\">Ti\u1ebfng Vi\u1ec7t<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Researchers found delayed jets from star-shredding supermassive black holes near 2% of the Eddington rate. It matches the threshold in small Galactic black holes, but rests on modelling ten high-quality events.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-2183","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/2183","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=2183"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}