{"id":62718,"date":"2024-08-25T10:10:00","date_gmt":"2024-08-25T10:10:00","guid":{"rendered":"http:\/\/3f94ec0c-a65c-4826-96ea-203151d6c114"},"modified":"2024-08-25T10:39:43","modified_gmt":"2024-08-25T10:39:43","slug":"key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/rss_feed\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows\/","title":{"rendered":"Key missing link in black hole evolution could lie within the Omega Centauri star cluster, Hubble data shows"},"content":{"rendered":"<p class=\"rssexcerpt\"> <\/p><p class=\"rssauthor\">By Iain Todd\n      <\/p><p class=\"rssbyline\">Published: Sunday, 25 August 2024 at 10:10 AM<\/p><hr class=\"no-tts wp-block-separator\"\/><?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><p>The bright, huge globular star cluster Omega Centauri may have a black hole within it, according to a study made using the Hubble Space Telescope.<\/p><p>Astronomers looked at over 500 Hubble images of the <a href=\"https:\/\/www.skyatnightmagazine.com\/astrophotography\/stars\/star-clusters\/globular-clusters\">globular cluster<\/a> and detected seven stars that are moving incredibly fast within the innermost region.<\/p><p>These, say, the team, provide evidence of an intermediate-mass black hole in <a href=\"https:\/\/www.skyatnightmagazine.com\/astrophotography\/stars\/star-clusters\/omega-centauri-globular-cluster\">Omega Centauri<\/a>.<\/p><figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\"><iframe loading=\"lazy\" title=\"Hubble Finds New Evidence for Intermediate-Mass Black Hole in Omega Centauri\" width=\"800\" height=\"450\" src=\"https:\/\/www.youtube.com\/embed\/jKbGe7FxF7s?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen=\"\"\/><\/div><\/figure><p>Intermediate-mass black holes are a \u2018missing link\u2019 in <a href=\"https:\/\/www.skyatnightmagazine.com\/space-science\/black-hole\">black hole<\/a> evolution, and only a few other candidates have been found in the Universe so far.<\/p><p>They are so-called because most known black holes are monumentally massive like the supermassive black holes that lurk at the centres of most galaxies, or small with a mass less than 100 times that of the Sun.<\/p><p>Studying intermediate-mass black holes will help astronomers learn more about how black holes form and evolve, and whether supermassive black holes grow from intermediate mass ones.<\/p><figure class=\"wp-block-image size-full has-lightbox has-lightbox\"><figcaption class=\"wp-element-caption\">Hubble Space Telescope image of globular cluster Omega Centaur. Hubble data suggests there&#8217;s an intermediate-mass black hole within the cluster. Click to expand. Credit: ESA\/Hubble &amp; NASA, M. H\u00e4berle (MPIA)<\/figcaption><\/figure><h2 class=\"wp-block-heading\" id=\"h-omega-centauri\"><strong>Omega Centauri<\/strong><\/h2><p>The globular cluster Omega Centauri is a <a href=\"https:\/\/www.skyatnightmagazine.com\/advice\/southern-hemisphere-cheat-sheet\">southern hemisphere night-sky target<\/a> and can be seen with the naked eye under dark skies.<\/p><p>It&#8217;s located 17,700 <a href=\"https:\/\/www.skyatnightmagazine.com\/space-science\/lightyear\">lightyears<\/a> away and has been observed for hundreds of years.<\/p><p>Globular clusters are thought to be among the oldest objects in the Universe, and consist of up to 1 million stars all tightly held together by gravity.<\/p><p>Omega Centauri is something of an anomaly, as it rotates faster than most globular clusters and is about 10 million times bigger, making it almost as massive as a small galaxy.<\/p><p>That means Omega Centauri has about 10 million stars within its gravitational grasp.<\/p><figure class=\"wp-block-image size-full has-lightbox has-lightbox\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"435\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/48\/2024\/08\/hubble-omega-centauri-black-hole.jpg\" alt=\"Hubble Space Telescope image showing the likely location of the black hole candidate in globular star cluster Omega Centauri. Credit: ESA\/Hubble &amp; NASA, M. H\u00e4berle (MPIA)\" class=\"wp-image-160846\"\/><figcaption class=\"wp-element-caption\">Hubble Space Telescope image showing the likely location of the black hole candidate in globular star cluster Omega Centauri. Click to expand. Credit: ESA\/Hubble &amp; NASA, M. H\u00e4berle (MPIA)<\/figcaption><\/figure><h2 class=\"wp-block-heading\" id=\"h-finding-a-black-hole-in-omega-centauri\"><strong>Finding a black hole in Omega Centauri<\/strong><\/h2><p>A team of astronomers created a catalogue of the motion of stars within Omega Centauri, measuring the velocities of 1.4 million stars.<\/p><p>They did this by analysing over 500 Hubble Space Telescope images of the cluster.<\/p><p>&#8220;We discovered seven stars that should not be there,&#8221; says Maximilian H\u00e4berle of the Max Planck Institute for Astronomy in Germany, who led the study.<\/p><p>&#8220;They are moving so fast that they should escape the cluster and never come back. The most likely explanation is that a very massive object is gravitationally pulling on these stars and keeping them close to the centre.<\/p><p>&#8220;The only object that can be so massive is a black hole, with a mass at least 8,200 times that of our Sun.&#8221;<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"940\" height=\"530\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/48\/2019\/05\/Omega-Centauri-7fe66fa.jpg\" alt=\"Globular cluster Omega Centauri is thought to contain about ten million stars. These ancient objects may not be as old as once thought. Credit: ESO\" class=\"wp-image-29217\"\/><figcaption class=\"wp-element-caption\">Globular cluster Omega Centauri is thought to contain about ten million stars. Credit: ESO<\/figcaption><\/figure><p>Previous studies have suggested there could be an intermediate-mass black hole in Omega Centauri, but other studies suggest it might instead be a cluster of stellar-mass black holes.<\/p><p>&#8220;This discovery is the most direct evidence so far of an IMBH in Omega Centauri,&#8221;\u00a0says team lead Nadine Neumayer of the Max Planck Institute for Astronomy, who initiated the study with Anil Seth of the University of Utah in the United States.<\/p><p>&#8220;This is exciting because there are only very few other black holes known with a similar mass. The black hole in Omega Centauri may be the best example of an intermediate-mass black hole in our cosmic neighbourhood.&#8221;<\/p><p>The black hole is thought to be 8,200 times as massive as our Sun, but this is yet to be confirmed.<\/p><p>Follow-up observations of the stars by the team using the James Webb Space Telescope are planned, and could help solve the mystery once and for all.<\/p><p><strong><em>Read the full paper at <a href=\"https:\/\/arxiv.org\/abs\/2404.03722\" target=\"_blank\" rel=\"noreferrer noopener\">arxiv.org\/abs\/2404.03722<\/a><\/em><\/strong><\/p><p><a href=\"https:\/\/esahubble.org\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>esahubble.org<\/strong><\/a><\/p> <\/body><\/html>\n<hr class=\"no-tts wp-block-separator\"\/>","protected":false},"excerpt":{"rendered":"<p>By Iain Todd Published: Sunday, 25 August 2024 at 10:10 AM The bright, huge globular star cluster Omega Centauri may have a black hole within it, according to a study made using the Hubble Space Telescope. Astronomers looked at over 500 Hubble images of the globular cluster and detected seven stars that are moving incredibly [&hellip;]<\/p>\n","protected":false},"author":24,"featured_media":62719,"template":"","categories":[1],"acf":{"readingTimeMinutes":"3"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/08\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows.jpg",1200,1200,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/08\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/08\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows-300x300.jpg",300,300,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/08\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows-768x768.jpg",768,768,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/08\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows-1024x1024.jpg",800,800,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/08\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows.jpg",1200,1200,false],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/77\/2024\/08\/key-missing-link-in-black-hole-evolution-could-lie-within-the-omega-centauri-star-cluster-hubble-data-shows.jpg",1200,1200,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"By Iain Todd Published: Sunday, 25 August 2024 at 10:10 AM The bright, huge globular star cluster Omega Centauri may have a black hole within it, according to a study made using the Hubble Space Telescope. Astronomers looked at over 500 Hubble images of the globular cluster and detected seven stars that are moving incredibly&hellip;","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed\/62718"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media\/62719"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/media?parent=62718"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcskyatnight\/wp-json\/wp\/v2\/categories?post=62718"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}