{"id":5829,"date":"2024-10-25T13:00:00","date_gmt":"2024-10-25T13:00:00","guid":{"rendered":"https:\/\/slottsskogsobservatoriet.se\/?p=5829"},"modified":"2024-10-24T09:26:31","modified_gmt":"2024-10-24T09:26:31","slug":"svarta-hal-trippelsystemet-som-forandrar-var-forstaelse-av-universum","status":"publish","type":"post","link":"https:\/\/slottsskogsobservatoriet.se\/en\/svarta-hal-trippelsystemet-som-forandrar-var-forstaelse-av-universum\/","title":{"rendered":"Svarta h\u00e5l: Trippelsystemet som f\u00f6r\u00e4ndrar v\u00e5r f\u00f6rst\u00e5else av universum"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Forskare har gjort en banbrytande uppt\u00e4ckte av ett\u00a0<strong>trippelsystem med svarta h\u00e5l<\/strong>\u00a0\u2013 det f\u00f6rsta som n\u00e5gonsin observerats. Bel\u00e4get 8 000 ljus\u00e5r fr\u00e5n jorden, visar detta system en ovanlig ursprungsprocess, k\u00e4nd som\u00a0<strong>direkt kollaps<\/strong>. Vanligtvis bildas svarta h\u00e5l genom supernovaexplosioner, men h\u00e4r kollapsade en stj\u00e4rna direkt till ett svart h\u00e5l utan att explodera (<a href=\"https:\/\/www.popsci.com\/science\/black-hole-triple\/\" target=\"_blank\" rel=\"noreferrer noopener\">Popular Science<\/a>).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Hur bildades detta trippelsystem?<\/strong><br>Normalt sett bildas ett svart h\u00e5l genom en massiv supernova som skapar ett extremt gravitationsf\u00e4lt. I det h\u00e4r fallet verkar stj\u00e4rnan ha imploderat direkt, utan explosion, vilket gjorde det m\u00f6jligt f\u00f6r en annan, fj\u00e4rran stj\u00e4rna att forts\u00e4tta kretsa runt det svarta h\u00e5let. Detta process, kallad\u00a0<strong>direkt kollaps<\/strong>, \u00e4r ovanlig och \u00f6ppnar d\u00f6rrar f\u00f6r ytterligare uppt\u00e4ckter av liknande system. Den yttre stj\u00e4rnan f\u00f6rblev gravitationellt bunden till systemet, vilket inte skulle ha varit m\u00f6jligt vid en kraftfull supernova.<\/p>\n\n\n\n<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\">\n<iframe title=\"Flaring Black Hole Accretion Disk in the Binary System V404 Cygni\" width=\"780\" height=\"439\" src=\"https:\/\/www.youtube.com\/embed\/fCWteTkhd_A?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Viktiga insikter fr\u00e5n Gaia-satelliten<\/strong><br>Uppt\u00e4ckten av detta system hade inte varit m\u00f6jlig utan Gaia-satelliten, som m\u00e4tt och kartlagt r\u00f6relsen av miljontals stj\u00e4rnor i v\u00e5r galax. Genom dessa detaljerade m\u00e4tningar kunde forskarna bekr\u00e4fta att alla objekt i systemet r\u00f6rde sig p\u00e5 ett s\u00e4tt som visade att de var gravitationellt bundna till varandra. Gaia har revolutionerat forskningen genom att ge insikter i hur svarta h\u00e5l samspelar med andra objekt i galaxen.<br><br><strong>Vad betyder detta f\u00f6r v\u00e5r f\u00f6rst\u00e5else av svarta h\u00e5l?<\/strong><br>Denna uppt\u00e4ckte tvingar forskare att utv\u00e4rdera tidigare teorier om hur svarta h\u00e5l skapas och utvecklas. Direkt kollaps verkar vara en mildare process \u00e4n den traditionella supernovan och tyder p\u00e5 att det kan finnas fler av dessa sv\u00e5ruppt\u00e4ckta system i universum. Kevin Burdge, en av forskarna bakom uppt\u00e4ckten, j\u00e4mf\u00f6rde systemet med ett &#8221;spindeln\u00e4t&#8221; av gravitation som h\u00e5ller allt samman\u200b (<a href=\"https:\/\/www.popsci.com\/science\/black-hole-triple\/\" target=\"_blank\" rel=\"noreferrer noopener\">Popular Science<\/a>).<br><br><strong>Trippelsystemets \u00e5lder och framtida forskning<\/strong><br>Forskare uppskattar att detta trippelsystem \u00e4r ungef\u00e4r\u00a0<strong>fyra miljarder \u00e5r<\/strong>\u00a0gammalt. Den yttre stj\u00e4rnan, som h\u00e5ller p\u00e5 att bli en\u00a0<strong>r\u00f6d j\u00e4tte<\/strong>, hj\u00e4lper forskarna att datera systemet och f\u00f6rst\u00e5 hur svarta h\u00e5l p\u00e5verkar n\u00e4rliggande stj\u00e4rnor \u00f6ver tid. Forskarna simulerade tusentals m\u00f6jliga scenarier f\u00f6r hur detta system kunde ha bildats och kom fram till att den mest sannolika f\u00f6rklaringen \u00e4r att det svarta h\u00e5let uppstod genom en direkt kollaps, utan den v\u00e5ldsamma energiutsl\u00e4pp som k\u00e4nnetecknar supernovor.<br><br><strong>Sammanfattning<\/strong><br>Uppt\u00e4ckten av detta\u00a0<strong>trippelsystem med svarta h\u00e5l<\/strong>\u00a0omkullkastar tidigare teorier om hur svarta h\u00e5l bildas och hur de interagerar med andra stj\u00e4rnor. Det markerar en viktig milstolpe inom astrofysiken och pekar p\u00e5 att svarta h\u00e5l kan bildas p\u00e5 fler s\u00e4tt \u00e4n tidigare k\u00e4nt. Forskarna tror att detta bara \u00e4r b\u00f6rjan p\u00e5 en helt ny f\u00f6rst\u00e5else av universums mest mystiska objekt. System som dessa, tidigare sv\u00e5ra att uppt\u00e4cka, kan nu bli f\u00f6rem\u00e5l f\u00f6r ytterligare studier, vilket kan leda till nya uppt\u00e4ckter inom kosmos st\u00f6rsta och mest komplexa fenomen.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Svarta h\u00e5l visar sig vara l\u00e5ngt mer dynamiska \u00e4n vad vi tidigare trott, och forskningen kring dessa trippelsystem kommer utan tvekan att bidra till en djupare f\u00f6rst\u00e5else av universums mest extrema objekt.<br><br><em>Bildk\u00e4lla: Jorge Lugo<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>Forskare har gjort en banbrytande uppt\u00e4ckte av ett\u00a0trippelsystem med svarta h\u00e5l\u00a0\u2013 det f\u00f6rsta som n\u00e5gonsin observerats. Bel\u00e4get 8 000 ljus\u00e5r fr\u00e5n jorden, visar detta system en ovanlig ursprungsprocess, k\u00e4nd som\u00a0direkt kollaps. Vanligtvis bildas svarta h\u00e5l genom supernovaexplosioner, men h\u00e4r kollapsade en stj\u00e4rna direkt till ett svart h\u00e5l utan att explodera (Popular Science). Hur bildades detta [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5830,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[25],"tags":[105,93,35,106,92,15,104,107],"class_list":["post-5829","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nyheter","tag-gaia","tag-nasa","tag-nyheter","tag-rymden","tag-rymdnyheter","tag-slottsskogsobservatoriet","tag-svarta-hal","tag-universum"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Forskare har uppt\u00e4ckt det f\u00f6rsta trippelsystemet med svarta h\u00e5l, bildat genom direkt kollaps av en stj\u00e4rna ist\u00e4llet f\u00f6r en supernova.\" \/>\n\t<meta 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