{"id":97449,"date":"2020-05-07T15:39:25","date_gmt":"2020-05-07T11:39:25","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T20:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/ucnoqta.az\/?p=97449","title":{"rendered":"Yer\u0259 \u0259n yax\u0131n qara d\u0259lik tap\u0131l\u0131b"},"content":{"rendered":"

Astronomlar, göy sferinin c\u0259nub yar\u0131mkür\u0259sind\u0259 adi gözl\u0259 görün\u0259n, üçqat ulduz sistemin\u0259 daxil olan, qara d\u0259likl\u0259r\u0259 \u0259n real namiz\u0259d tap\u0131blar. Bu bar\u0259d\u0259 “Astronomy and Astrophysics” jurnal\u0131nda elmi m\u0259qal\u0259 d\u0259rc olunub.<\/strong><\/p>\n

Son vaxtlara q\u0259d\u0259r Yer\u0259 \u0259n yax\u0131n m\u0259lum olan qara d\u0259lik, T\u0259kbuynuz  bürcünd\u0259, bizd\u0259n üç min i\u015f\u0131q ili m\u0259saf\u0259sind\u0259 yerl\u0259\u015f\u0259n, rentgen m\u0259nb\u0259yi olan qo\u015fa A0620-00 ulduz sisteminin komponentl\u0259rind\u0259n biri hesab olunurdu. Lakin Avropa C\u0259nub R\u0259s\u0259dxanas\u0131ndan Tomas Riviniusun r\u0259hb\u0259rlik etdiyi astronomlar qrupu Gün\u0259\u015fd\u0259n min i\u015f\u0131q ili m\u0259saf\u0259sind\u0259 olan HR 6819 üçqat ulduz sistemind\u0259 biz\u0259 daha yax\u0131n  qara d\u0259lik tap\u0131ld\u0131\u011f\u0131 haqq\u0131nda m\u0259lumat veribl\u0259r. Bu ulduz sistemi ayd\u0131n ays\u0131z gec\u0259d\u0259 göyün c\u0259nub yar\u0131mkür\u0259sind\u0259 yerl\u0259\u015f\u0259n Teleskop bürcünd\u0259 adi gözl\u0259 görünür.<\/p>\n

Bu k\u0259\u015ff, Çilid\u0259ki La Silla R\u0259s\u0259dxanas\u0131nda 2,2 metrlik teleskopunda qura\u015fd\u0131r\u0131lm\u0131\u015f FEROS spektroqraf\u0131 vasit\u0259sil\u0259 HR 6819 ulduz sistemini t\u0259dqiqi zaman\u0131 edilmi\u015fdir. HR 6819 ulduz sistemi B3 III spektral sinfin\u0259 m\u0259nsub ulduzdan v\u0259 onun \u0259traf\u0131nda dair\u0259vi orbit boyunca h\u0259r\u0259k\u0259t ed\u0259n görünm\u0259y\u0259n komponentd\u0259n ibar\u0259t s\u0131x qo\u015fa sistemdir. Bu sistem \u0259traf\u0131nda geni\u015f orbit boyunca Be ulduzu h\u0259r\u0259k\u0259t edir. S\u0131x qo\u015fa sistemin periodu 40 gündür. \u015eüa sür\u0259ti \u0259yrisinin yar\u0131mamplitudunun 61.3 km\/san oldu\u011funu bil\u0259r\u0259k, görün\u0259n komponentin kütl\u0259sinin minimal qiym\u0259ti üçün 6.3 gün\u0259\u015f kütl\u0259si, görünm\u0259y\u0259n komponentin kütl\u0259si üçün is\u0259 4.2 gün\u0259\u015f kütl\u0259si al\u0131nm\u0131\u015fd\u0131r. Görünm\u0259y\u0259n komponentin kütl\u0259si üçün al\u0131nm\u0131\u015f 4.2 gün\u0259\u015f kütl\u0259si qara d\u0259likl\u0259r üçün xarakterik oldu\u011fu üçün bu komponentin qara d\u0259lik oldu\u011fu hesab edilir.<\/p>\n

Qeyd ed\u0259k ki, güclü cazib\u0259 qüvv\u0259si s\u0259b\u0259bind\u0259n h\u0259tta fotonun bel\u0259 t\u0259rk ed\u0259 bilm\u0259diyi m\u0259kan olaraq qara d\u0259likl\u0259rin mövcudlu\u011fu yüz ild\u0259n çox \u0259vv\u0259l ümumi nisbilik n\u0259z\u0259riyy\u0259si ç\u0259rçiv\u0259sind\u0259 proqnozla\u015fd\u0131r\u0131l\u0131rm\u0131\u015fd\u0131r.
\nUzun müdd\u0259tdir ki, astronomlar\u0131n \u0259lind\u0259 qara d\u0259likl\u0259rin mövcudlu\u011funu sübut ed\u0259n yaln\u0131z dolay\u0131 faktlar var idi: Güclü cazib\u0259 qüvv\u0259l\u0259rinin mövcudlu\u011fu, uzaq qalaktikalarda relyativist jetl\u0259rin a\u015fkarlanmas\u0131 v\u0259 qo\u015fa ulduz sisteml\u0259rind\u0259 parlaq akkresiya diskl\u0259rinin mü\u015fahid\u0259 olunmas\u0131.<\/p>\n

Yaln\u0131z bu yax\u0131nlarda, astronomik mü\u015fahid\u0259l\u0259rin apar\u0131lmas\u0131 v\u0259 onlardan al\u0131nan n\u0259tic\u0259l\u0259rin i\u015fl\u0259nm\u0259si üsullar\u0131n\u0131n t\u0259kmill\u0259\u015fm\u0259si n\u0259tic\u0259sind\u0259 astronomlar f\u0259al M87 qalaktikas\u0131n\u0131n nüv\u0259sind\u0259 qara d\u0259liyin oldu\u011funu birba\u015fa sübut etdil\u0259r. Bir neç\u0259 d\u0259f\u0259 qara d\u0259likl\u0259rin birl\u0259\u015fm\u0259si zaman\u0131 \u0259m\u0259l\u0259 g\u0259l\u0259n qravitasiya dal\u011falar\u0131 qeyd olundu. H\u0259mçinin bizim qalaktikan\u0131n m\u0259rk\u0259zind\u0259 yerl\u0259\u015f\u0259n ifrat kütl\u0259li qara d\u0259liyin güclü qravitasiya sah\u0259sind\u0259 ulduzlar\u0131n h\u0259r\u0259k\u0259tinin nisbilik n\u0259z\u0259riyy\u0259sin\u0259 uy\u011funlu\u011fu mü\u0259yy\u0259n edildi.<\/p>\n

Az\u0259rbaycan Milli Elml\u0259r Akademiyas\u0131
\nN.Tusi ad\u0131na \u015eamax\u0131 Astrofizika R\u0259s\u0259dxanas\u0131
\n\u0130ctimaiyy\u0259tl\u0259 \u0259laq\u0259l\u0259r \u015föb\u0259sinin müdiri
\nOrxan M. Salehli<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"

Astronomlar, göy sferinin c\u0259nub yar\u0131mkür\u0259sind\u0259 adi gözl\u0259 görün\u0259n, üçqat ulduz sistemin\u0259 daxil olan, qara d\u0259likl\u0259r\u0259 \u0259n real namiz\u0259d tap\u0131blar. Bu bar\u0259d\u0259 “Astronomy and Astrophysics” jurnal\u0131nda elmi m\u0259qal\u0259 d\u0259rc olunub. Son vaxtlara q\u0259d\u0259r…<\/p>\n","protected":false},"author":1,"featured_media":251278,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-97449","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"_links":{"self":[{"href":"https:\/\/ucnoqta.az\/index.php?rest_route=\/wp\/v2\/posts\/97449","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ucnoqta.az\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ucnoqta.az\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ucnoqta.az\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ucnoqta.az\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=97449"}],"version-history":[{"count":0,"href":"https:\/\/ucnoqta.az\/index.php?rest_route=\/wp\/v2\/posts\/97449\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ucnoqta.az\/index.php?rest_route=\/wp\/v2\/media\/251278"}],"wp:attachment":[{"href":"https:\/\/ucnoqta.az\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=97449"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ucnoqta.az\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=97449"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ucnoqta.az\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=97449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}