{"id":230,"date":"2021-06-26T13:14:52","date_gmt":"2021-06-26T06:14:52","guid":{"rendered":"https:\/\/phamxuanhai.com\/?p=230"},"modified":"2021-06-26T13:14:54","modified_gmt":"2021-06-26T06:14:54","slug":"trung-tam-ngan-ha-khong-phai-ho-den","status":"publish","type":"post","link":"https:\/\/phamxuanhai.com\/?p=230","title":{"rendered":"Trung t\u00e2m Ng\u00e2n H\u00e0 kh\u00f4ng ph\u1ea3i H\u1ed1 \u0111en?"},"content":{"rendered":"<span class=\"rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\">3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span>\n<p>Trong r\u1ea5t nhi\u1ec1u n\u0103m, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 tin r\u1eb1ng trung t\u00e2m c\u1ee7a c\u00e1c thi\u00ean h\u00e0 l\u00e0 m\u1ed9t h\u1ed1 \u0111en kh\u00f4ng l\u1ed3. Trong \u0111\u00f3, bao g\u1ed3m c\u1ea3 D\u1ea3i Ng\u00e2n H\u00e0 c\u1ee7a ch\u00fang ta. T\u00ean th\u01b0\u1eddng g\u1ecdi l\u00e0 <a href=\"https:\/\/en.wikipedia.org\/wiki\/Sagittarius_A*\">Sagittarius A*<\/a> (hay Sgr A*). <a href=\"https:\/\/courses.lumenlearning.com\/astronomy\/chapter\/the-center-of-the-galaxy\/\">Kh\u1ed1i l\u01b0\u1ee3ng<\/a>  c\u1ee7a n\u00f3 v\u00e0o kho\u1ea3ng 4.6 tri\u1ec7u l\u1ea7n M\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta. M\u1ed9t nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y c\u1ee7a nh\u00f3m t\u00e1c gi\u1ea3 t\u1eeb Italia, Argentina v\u00e0 Colombia \u0111\u00e3 cho b\u1eb1ng ch\u1ee9ng kh\u00e1c. C\u00e1c d\u1eef li\u1ec7u m\u00e0 h\u1ecd thu th\u1eadp \u0111\u01b0\u1ee3c cho th\u1ea5y r\u1eb1ng, c\u00f3 th\u1ec3 Sgr A* c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t kh\u1ed1i <a href=\"https:\/\/vi.wikipedia.org\/wiki\/V%E1%BA%ADt_ch%E1%BA%A5t_t%E1%BB%91i\">v\u1eadt ch\u1ea5t t\u1ed1i<\/a> kh\u1ed5ng l\u1ed3.<\/p>\n\n\n\n<p>B\u00e0i vi\u1ebft \u0111\u01b0\u1ee3c l\u01b0\u1ee3c d\u1ecbch t\u1eeb b\u00e0i vi\u1ebft c\u1ee7a t\u00e1c gi\u1ea3 Caroline Delbert \u0111\u01b0\u1ee3c \u0111\u0103ng t\u1ea1i <a href=\"https:\/\/www.popularmechanics.com\/space\/deep-space\/a36530817\/the-center-of-the-milky-way-might-not-be-a-black-hole-after-all\/\">\u0111\u01b0\u1eddng d\u1eabn sau<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">L\u00fd thuy\u1ebft v\u1ec1 h\u1ed1 \u0111en t\u1ea1i trung t\u00e2m d\u1ea3i Ng\u00e2n H\u00e0<\/h2>\n\n\n\n<p>L\u00fd thuy\u1ebft v\u1ec1 m\u1ed9t h\u1ed1 \u0111en kh\u1ed5ng l\u1ed3 n\u1eb1m \u1edf trung t\u00e2m Ng\u00e2n H\u00e0 \u0111\u00e3 c\u00f3 nhi\u1ec1u n\u0103m. Nh\u1eefng t\u00ednh to\u00e1n v\u1ec1 n\u00f3 \u0111\u01b0\u1ee3c d\u1ef1a m\u1ed9t ph\u1ea7n tr\u00ean qu\u1ef9 \u0111\u1ea1o c\u1ee7a c\u00e1c ng\u00f4i sao c\u1ee5 th\u1ec3 nh\u01b0 S0-2. Ph\u01b0\u01a1ng th\u1ee9c chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 n\u00e0y \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 khoa h\u1ecdc nghi\u00ean c\u1ee9u. T\u1eeb \u0111\u00f3 t\u00ednh to\u00e1n t\u01b0\u01a1ng \u1ee9ng v\u1edbi qu\u1ef9 \u0111\u1ea1o c\u1ee7a ch\u00fang. S\u1eed d\u1ee5ng \u0111i\u1ec1u \u0111\u00f3 \u0111\u1ec3 ngo\u1ea1i suy ra v\u1eadt th\u1ec3 m\u00e0 ch\u00fang th\u1ef1c s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng xung quanh. \u1ede \u0111\u00e2y, ch\u00ednh l\u00e0 si\u00eau h\u1ed1 \u0111en n\u1eb7ng g\u1ea5p 4.6 tri\u1ec7u l\u1ea7n M\u1eb7t tr\u1eddi.<\/p>\n\n\n\n<p>Theo quan s\u00e1t, S0-2 v\u00e0 c\u00e1c v\u1eadt th\u1ec3 kh\u00e1c b\u1ecb h\u1ea5p d\u1eabn v\u00e0 quay xung quanh Sgr A*. T\u1ea1i \u0111\u00e2y, ch\u00fang h\u00ecnh th\u00e0nh m\u1ed9t qu\u1ef9 \u0111\u1ea1o c\u1ef1c \u0111oan. \u1ede \u0111\u00f3, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111ang quan s\u00e1t h\u00e0nh vi c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 n\u00e0y. T\u1eeb \u0111\u00f3, x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a si\u00eau h\u1ed1 \u0111en n\u00e0y. \u0110\u1ec3 d\u1ec5 h\u00ecnh dung, b\u1ea1n c\u00f3 th\u1ec3 li\u00ean t\u01b0\u1edfng \u0111\u1ebfn h\u00ecnh \u1ea3nh n\u01b0\u1edbc ch\u1ea3y xu\u1ed1ng l\u1ed7 tho\u00e1t n\u01b0\u1edbc. M\u1ef1c n\u01b0\u1edbc cao v\u00e0 c\u00e1i l\u1ed7 n\u1eb1m ngo\u00e0i t\u1ea7m nh\u00ecn. Tuy nhi\u00ean, chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a n\u01b0\u1edbc quanh l\u1ed7 v\u1eabn cho b\u1ea1n bi\u1ebft \u0111\u01b0\u1ee3c \u0111i\u1ec1u g\u00ec \u0111ang x\u1ea3y ra.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Nh\u1eefng d\u1eef li\u1ec7u cho m\u1ed9t l\u00fd thuy\u1ebft m\u1edbi<\/h2>\n\n\n\n<p>D\u00f9 \u0111\u00e2y l\u00e0 l\u00fd thuy\u1ebft v\u1edbi nhi\u1ec1u b\u1eb1ng ch\u1ee9ng c\u1ee5 th\u1ec3, n\u00f3 \u0111ang b\u1ecb lung lay b\u1edfi nh\u1eefng ph\u00e1t hi\u1ec7n m\u1edbi. M\u1ed9t nh\u00f3m c\u00e1c v\u1eadt th\u1ec3 ch\u01b0a x\u00e1c \u0111\u1ecbnh xu\u1ea5t hi\u1ec7n <a href=\"https:\/\/www.popularmechanics.com\/space\/deep-space\/a30568945\/supermassive-black-hole\/\">xung quanh Sgr A*<\/a> g\u1ea7n \u0111\u00e2y \u0111ang l\u00e0m kh\u00f3 c\u00e1c nh\u00e0 khoa h\u1ecdc. Ch\u00fang \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 c\u00e1c v\u1eadt th\u1ec3 G. Theo nh\u00e0 v\u1eadt l\u00fd h\u1ecdc Andrea Ghez n\u00f3i tr\u00ean <a href=\"https:\/\/www.sciencealert.com\/strange-objects-have-been-found-orbiting-our-galaxy-s-supermassive-black-hole\">ScienceAlert<\/a> th\u00ec:<\/p>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p>\u201cCh\u00fang tr\u00f4ng nh\u01b0 l\u00e0 kh\u00ed nh\u01b0ng l\u1ea1i c\u00f3 h\u00e0nh vi nh\u01b0 c\u00e1c h\u00e0nh tinh.\u201d<\/p><cite>Nh\u00e0 v\u1eadt l\u00fd h\u1ecdc Andrea Ghez<\/cite><\/blockquote><\/figure>\n\n\n\n<p>C\u00f3 6 v\u1eadt th\u1ec3 G nh\u01b0 v\u1eady \u0111\u00e3 quan s\u00e1t \u0111\u01b0\u1ee3c, v\u1edbi qu\u1ef9 \u0111\u1ea1o t\u1eeb 170 \u0111\u1ebfn 1,600 n\u0103m. C\u00e1c v\u1eadt th\u1ec3 n\u00e0y \u0111\u00e3 d\u1eabn \u0111\u1ebfn m\u1ed9t l\u00fd thuy\u1ebft m\u1edbi v\u1ec1 trung t\u00e2m c\u1ee7a Ng\u00e2n H\u00e0.<\/p>\n\n\n\n<p>V\u00e0o n\u0103m 2014, v\u1eadt th\u1ec3 G2 \u0111\u00e3 \u0111i qua \u0111i\u1ec3m g\u1ea7n nh\u1ea5t v\u1edbi Sgr A*. C\u00e1c nh\u00e0 khoa h\u1ecdc quan s\u00e1t \u0111i\u1ec1u n\u00e0y v\u1edbi d\u1ef1 \u0111o\u00e1n G2 s\u1ebd b\u1ecb ph\u00e1 h\u1ee7y v\u00ec \u0111i qu\u00e1 g\u1ea7n h\u1ed1 \u0111en. Nh\u01b0ng s\u1ef1 th\u1ef1c l\u00e0 n\u00f3 ch\u1ec9 b\u1ecb k\u00e9o gi\u00e3n v\u00e0 m\u00e9o \u0111i m\u1ed9t ch\u00fat \u2013 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 l\u1ef1c c\u1ea3n (drag). Ch\u00ednh \u0111i\u1ec1u n\u00e0y l\u00e0m cho nh\u00f3m t\u00e1c gi\u1ea3 tin r\u1eb1ng Sgr A* c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t si\u00eau h\u1ed1 \u0111en.<\/p>\n\n\n\n<p><a href=\"https:\/\/www.aanda.org\/articles\/aa\/full_html\/2020\/09\/aa35990-19\/aa35990-19.html\">M\u1ed9t nghi\u00ean c\u1ee9u<\/a> n\u0103m 2020 c\u1ee7a h\u1ecd cho r\u1eb1ng G2 v\u00e0 S2 c\u00f3 th\u1ec3 c\u00f9ng ch\u1ecbu m\u1ed9t lo\u1ea1i l\u1ef1c h\u1ea5p d\u1eabn kh\u00e1c. C\u00e1c bi\u1ec3u hi\u1ec7n c\u1ee7a c\u00e1c v\u1eadt th\u1ec3 n\u00e0y nh\u1ea5t tr\u00ed v\u1edbi m\u1ed9t d\u1ea1ng v\u1eadt ch\u1ea5t t\u1ed1i c\u1ee5 th\u1ec3. V\u1edbi vi\u1ec7c ph\u00e2n t\u00edch \u0111\u1ed3ng th\u1eddi h\u1ed1 \u0111en v\u00e0 v\u1eadt ch\u1ea5t t\u1ed1i c\u1ea1nh nhau, v\u1eadt ch\u1ea5t t\u1ed1i \u0111\u00e3 cho k\u1ebft qu\u1ea3 ph\u00f9 h\u1ee3p h\u01a1n.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u01a1 s\u1edf cho nghi\u00ean c\u1ee9u t\u01b0\u01a1ng lai<\/h2>\n\n\n\n<p>Tuy ch\u00fang ta kh\u00f4ng th\u1ec3 nh\u00ecn th\u1ea5y v\u1eadt ch\u1ea5t t\u1ed1i, nh\u01b0ng ch\u00fang ta c\u00f3 th\u1ec3 \u201cnh\u00e2n di\u1ec7n\u201d \u0111\u01b0\u1ee3c n\u00f3. Ch\u00fang \u0111\u01b0\u1ee3c \u0111o th\u00f4ng qua s\u1ef1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn l\u1ef1c h\u1ea5p d\u1eabn v\u00e0 c\u00e1c v\u1eadt th\u1ec3 quanh ch\u00fang. V\u1eadt ch\u1ea5t t\u1ed1i chi\u1ebfm kho\u1ea3ng 30% kh\u1ed1i l\u01b0\u1ee3ng v\u0169 tr\u1ee5 ch\u00fang ta, nh\u01b0ng l\u1ea1i v\u00f4 h\u00ecnh. T\u1ee9c l\u00e0 cho \u0111\u1ebfn nay ch\u00fang ta v\u1eabn ch\u01b0a quan s\u00e1t \u0111\u01b0\u1ee3c ch\u00fang. Nh\u01b0ng ch\u00fang c\u00f3 t\u1ed3n t\u1ea1i, song h\u00e0nh c\u00f9ng v\u1edbi kh\u00e1i ni\u1ec7m <a href=\"https:\/\/vi.wikipedia.org\/wiki\/N%C4%83ng_l%C6%B0%E1%BB%A3ng_t%E1%BB%91i\">n\u0103ng l\u01b0\u1ee3ng t\u1ed1i<\/a>. Anh b\u1ea1n n\u00e0y c\u00f2n l\u1edbn h\u01a1n, chi\u1ebfm \u0111\u1ebfn h\u01a1n 60% kh\u1ed1i l\u01b0\u1ee3ng v\u0169 tr\u1ee5. Nh\u01b0 v\u1eady, \u0111\u1ebfn kho\u1ea3ng 99.5% kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u0169 tr\u1ee5 l\u00e0 nh\u1eefng th\u1ee9 m\u00e0 hi\u1ec7n gi\u1edd ch\u00fang ta v\u1eabn ch\u01b0a quan s\u00e1t \u0111\u01b0\u1ee3c. Nghi\u00ean c\u1ee9u ch\u00fang gi\u00fap ch\u00fang ta t\u00ecm \u0111\u01b0\u1ee3c c\u00e1c m\u1ea3nh gh\u00e9p cho h\u00e0ng lo\u1ea1t c\u00e1c c\u00e2u h\u1ecfi c\u1ee7a ch\u00fang ta trong v\u1eadt l\u00fd v\u00e0 thi\u00ean v\u0103n h\u1ecdc.<\/p>\n\n\n\n<p>V\u1eadt ch\u1ea5t t\u1ed1i c\u00f3 th\u1ec3 chuy\u1ec3n h\u00f3a th\u00e0nh h\u1ed1 \u0111en. Tuy nhi\u00ean, c\u00e1c nh\u00e0 khoa h\u1ecdc cho r\u1eb1ng Sgr A* v\u1eabn \u0111ang l\u00e0 m\u1ed9t kh\u1ed1i bong b\u00f3ng v\u1eadt ch\u1ea5t t\u1ed1i kh\u1ed5ng l\u1ed3. N\u00f3 c\u1ea7n nhi\u1ec1u nguy\u00ean li\u1ec7u h\u01a1n n\u1eefa \u0111\u1ec3 c\u00f3 th\u1ec3 chuy\u1ec3n h\u00f3a th\u00e0nh m\u1ed9t h\u1ed1 \u0111en. Hi\u1ec7n t\u1ea1i, n\u00f3 c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t bong b\u00f3ng \u0111\u1eb7c \u0111ang h\u00fat c\u00e1c v\u1eadt th\u1ec3 xung quanh. Gi\u1ed1ng nh\u01b0 m\u1ed9t h\u1ed1 \u0111en v\u1eady. N\u1ebfu trong t\u01b0\u01a1ng lai n\u00f3 th\u1ef1c s\u1ef1 chuy\u1ec3n h\u00f3a th\u00e0nh m\u1ed9t h\u1ed1 \u0111en. \u0110\u00f3 s\u1ebd ch\u00ednh l\u00e0 l\u1eddi gi\u1ea3i th\u00edch cho s\u1ef1 h\u00ecnh th\u00e0nh c\u1ee7a h\u1ed1 \u0111en. M\u1ed9t c\u00e2u h\u1ecfi h\u00f3c b\u00faa cho c\u00e1c nh\u00e0 khoa h\u1ecdc hi\u1ec7n t\u1ea1i.<\/p>\n\n\n\n<p>C\u00e1c b\u1ea1n c\u00f3 th\u1ec3 t\u00ecm hi\u1ec3u v\u1ec1 nhi\u1ec1u th\u00f4ng tin th\u00fa v\u1ecb kh\u00e1c trong chuy\u00ean m\u1ee5c <a href=\"https:\/\/phamxuanhai.com\/?cat=11\">Th\u1ec3 gi\u1edbi mu\u00f4n m\u00e0u<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><span class=\"rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Reading Time: <\/span> <span class=\"rt-time\">3<\/span> <span class=\"rt-label rt-postfix\">minutes<\/span><\/span> Trong r\u1ea5t nhi\u1ec1u n\u0103m, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 tin r\u1eb1ng trung t\u00e2m c\u1ee7a c\u00e1c thi\u00ean h\u00e0 l\u00e0 m\u1ed9t h\u1ed1 \u0111en kh\u00f4ng l\u1ed3. Trong \u0111\u00f3, [&hellip;] <span class=\"read-more-link\"><a class=\"read-more\" href=\"https:\/\/phamxuanhai.com\/?p=230\">Xem th\u00eam<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":231,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-230","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-https-phamxuanhai-com-page_id23"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Trung t\u00e2m Ng\u00e2n H\u00e0 kh\u00f4ng ph\u1ea3i H\u1ed1 \u0111en? - Haipham<\/title>\n<meta name=\"description\" content=\"M\u1ed9t nghi\u00ean c\u1ee9u g\u1ea7n \u0111\u00e2y c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 cho b\u1eb1ng ch\u1ee9ng r\u1eb1ng c\u00f3 th\u1ec3 trung t\u00e2m Ng\u00e2n H\u00e0 c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i si\u00eau h\u1ed1 \u0111en.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/phamxuanhai.com\/?p=230\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Trung t\u00e2m Ng\u00e2n H\u00e0 kh\u00f4ng ph\u1ea3i H\u1ed1 \u0111en? 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