{"id":112431,"date":"2020-09-03T07:42:44","date_gmt":"2020-09-03T14:42:44","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2020\/09\/researcher-proposes-universal-mechanism-for-ejection-of-matter"},"modified":"2020-09-03T07:42:44","modified_gmt":"2020-09-03T14:42:44","slug":"researcher-proposes-universal-mechanism-for-ejection-of-matter","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2020\/09\/researcher-proposes-universal-mechanism-for-ejection-of-matter","title":{"rendered":"Researcher proposes universal mechanism for ejection of matter"},"content":{"rendered":"

<\/a><\/p>\n

Black holes can expel a thousand times more matter than they capture. The mechanism that governs both ejection and capture is the accretion disk, a vast mass of gas and dust spiraling around the black hole at extremely high speeds. The disk is hot and emits light as well as other forms of electromagnetic radiation. Part of the orbiting matter is pulled toward the center and disappears behind the event horizon, the threshold beyond which neither matter nor light can escape. Another, much larger, part is pushed further out by the pressure of the radiation emitted by the disk itself.<\/p>\n

Every galaxy is thought to have a supermassive black hole at its center, but not all galaxies<\/a> have, or still have, accretion disks<\/a>. Those that do are known as active galaxies, on account of their active galactic nuclei. The traditional model<\/a> posits two phases in the matter that accumulates in the central region of an active galaxy: a high-speed ionized gas outflow of matter ejected by the nucleus, and slower molecules that may flow into the nucleus.<\/p>\n

A new model that integrates the two phases into a single scenario has now been put forward by Daniel May, a postdoctoral researcher in the University of S\u00e3o Paulo\u2019s Institute of Astronomy, Geophysics and Atmospheric Sciences (IAG-USP) in Brazil. \u201cWe found that the molecular phase, which appears to have completely different dynamics from the ionized phase, is also part of the outflow. This means there\u2019s far more matter being blown away from the center, and the active galactic nucleus plays a much more important role in the structuring of the galaxy as a whole,\u201d May told Ag\u00eancia FAPESP.<\/p>\n","protected":false},"excerpt":{"rendered":"

Black holes can expel a thousand times more matter than they capture. The mechanism that governs both ejection and capture is the accretion disk, a vast mass of gas and dust spiraling around the black hole at extremely high speeds. The disk is hot and emits light as well as other forms of electromagnetic radiation. [\u2026]<\/p>\n","protected":false},"author":513,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[33],"tags":[],"class_list":["post-112431","post","type-post","status-publish","format-standard","hentry","category-cosmology"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/112431","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/513"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=112431"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/112431\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=112431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=112431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=112431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}