{"id":222,"date":"2018-11-08T15:51:52","date_gmt":"2018-11-08T15:51:52","guid":{"rendered":"https:\/\/astronomia.bedigital.cl\/astronomers-unveil-growing-black-holes-in-colliding-galaxies\/"},"modified":"2024-11-12T17:52:59","modified_gmt":"2024-11-12T17:52:59","slug":"astronomers-unveil-growing-black-holes-in-colliding-galaxies","status":"publish","type":"post","link":"https:\/\/astronomia.udp.cl\/es\/astronomers-unveil-growing-black-holes-in-colliding-galaxies\/","title":{"rendered":"Astronomers Unveil Growing Black Holes in Colliding Galaxies"},"content":{"rendered":"<p>Un grupo internacional de investigadores, entre los que est\u00e1 Claudio Ricci, actualmente acad\u00e9mico del N\u00facleo de Astronom\u00eda UDP, concluy\u00f3 que un gran n\u00famero de\u00a0AGNs, o\u00a0agujeros negros en r\u00e1pido crecimiento, son generados por choques entre galaxias, especialmente aquellos con altas luminosidades. Para realizar esta investigaci\u00f3n se utilizaron observaciones de alta resoluci\u00f3n, lo que permiti\u00f3 observar a trav\u00e9s de las gruesas capas de gas y polvo que cubren estos centros de galaxias con la m\u00e1s alta nitidez. Este estudio corresponde al m\u00e1s grande realizado sobre galaxias cercanas y en \u00e9l particip\u00f3 tambi\u00e9n el\u00a0acad\u00e9mico del Instituto de Astrof\u00edsica de la Universidad Cat\u00f3lica\u00a0Ezequiel Treister. Hoy fue publicado en la prestigiosa revista cient\u00edfica Nature.<\/p>\n<p>Los AGN liberan grandes cantidades de energ\u00eda debido al gas y polvo que cae sobre el agujero negro supermasivo que se encuentra en el centro de casi todas las galaxias masivas. En ese periodo de acreci\u00f3n, se convierten en las fuentes de energ\u00eda m\u00e1s brillantes en el Universo. Este estudio permiti\u00f3 observar los n\u00facleos de galaxias justo antes de la fusi\u00f3n de estos agujeros negros con una resoluci\u00f3n capaz de resolver separaciones muy peque\u00f1as entre ellos.<\/p>\n<p><em>El video muestra una simulaci\u00f3n de fusi\u00f3n de galaxias junto con las observaciones del Telescopio Keck.<\/em><\/p>\n<div class=\"ast-oembed-container\" style=\"height: 100%;\"><iframe title=\"Galaxy Merger Simulation + Keck Observations\" width=\"500\" height=\"375\" src=\"https:\/\/www.youtube.com\/embed\/Cm5C8mWWRIA?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/div>\n<p>Las observaciones se realizaron en el Observatorio Keck (Haw\u00e1i), utilizando \u00f3ptica adaptativa y se complementaron con datos del\u00a0<em>Telescopio Espacial Hubble.<\/em>La muestra incluy\u00f3 un amplio rango de luminosidad, as\u00ed como fuentes oscurecidas -por el polvo y gas alrededor- y no oscurecidas.<\/p>\n<p><a href=\"\\\\\\&quot;https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2018\/11\/Fig1_paper_ClaudioRicci-1.png\\\\\\&quot;\"><img decoding=\"async\" class=\"\\\\\\&quot;size-medium\" src=\"\\\\\\&quot;https:\/\/astronomia.udp.cl\/wp-content\/uploads\/2018\/11\/Fig1_paper_ClaudioRicci-1-196x300.png\\\\\\&quot;\" alt=\"\\\\\\&quot;Left:\" width=\"\\\\\\&quot;196\\\\\\&quot;\" height=\"\\\\\\&quot;300\\\\\\&quot;\" data-id=\"\\\\\\&quot;6811\\\\\\&quot;\" \/><\/a> Left: Images from the SDSS catalog of some of the galaxies of the sample, with the nuclei obscured by gas and dust. Right: Infrared images, obtained by the Keck Observatory, of the nuclei of these galaxies that show that they are merging.<\/p>\n<p>&#8220;<em>Thanks to these observations at very high resolution we discovered that almost twenty percent of the AGNs are associated with the last stages of the galaxy collision process, that is, shortly before they merge and form a single, colossal black hole.\u00a0\u00a0The interesting thing is that all this can be compared with simulations, which predict a very similar behaviour<\/em>\u201d, destaca Ezequiel Treister, quien tambi\u00e9n es investigador del Centro de Astrof\u00edsica y Tecnolog\u00edas Afines CATA.<\/p>\n<p>La investigaci\u00f3n detect\u00f3 n\u00facleos de galaxias chocando y desde el an\u00e1lisis se concluy\u00f3 que los agujeros negros oscurecidos tienen una mayor probabilidad de participar de este tipo de choques. \u201c<em>La fusi\u00f3n de galaxias es un importante mecanismo para ocultar y alimentar agujeros negros supermasivos<\/em>\u201d, indica Claudio Ricci, quien era investigador del Instituto de Astrof\u00edsica UC al momento de realizar la investigaci\u00f3n<\/p>\n<p>Seg\u00fan el l\u00edder de esta investigaci\u00f3n, el astr\u00f3nomo de Eureka Scientific Inc. Michael J. Koss, las im\u00e1genes de este estudio muestran lo que suceder\u00e1 cuando nuestra galaxia, la V\u00eda L\u00e1ctea, se fusione con Andr\u00f3meda y sus respectivos agujeros negros centrales formen una espiral entre s\u00ed. Cuando los agujeros negros chocan, liberan energ\u00eda en forma de ondas gravitacionales, por lo que esta investigaci\u00f3n podr\u00eda conducir a predicciones sobre en qu\u00e9 tipos de galaxias podr\u00edan ocurrir estos eventos c\u00f3smicos importantes.<\/p>\n<p>Fuente: Nature<\/p>","protected":false},"excerpt":{"rendered":"<p>An international team of researchers, including Claudio Ricci, professor of the Nucleo de Astronomia, performed the largest survey of the cores of nearby galaxies in near-infrared light, using high-resolution images taken by NASA&#8217;s Hubble Space Telescope and the W. M. Keck Observatory in Hawaii. The Hubble observations represent over 20 years&#8217; worth of snapshots from &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"https:\/\/astronomia.udp.cl\/es\/astronomers-unveil-growing-black-holes-in-colliding-galaxies\/\"> <span class=\"screen-reader-text\">Astronomers Unveil Growing Black Holes in Colliding Galaxies<\/span> Leer m\u00e1s &raquo;<\/a><\/p>","protected":false},"author":2,"featured_media":385,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[13],"tags":[171],"acf":[],"_links":{"self":[{"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/posts\/222"}],"collection":[{"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/comments?post=222"}],"version-history":[{"count":2,"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/posts\/222\/revisions"}],"predecessor-version":[{"id":3992,"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/posts\/222\/revisions\/3992"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/"}],"wp:attachment":[{"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/media?parent=222"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/categories?post=222"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astronomia.udp.cl\/es\/wp-json\/wp\/v2\/tags?post=222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}