{"id":28639,"date":"2019-02-23T19:42:00","date_gmt":"2019-02-23T12:42:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=28639"},"modified":"2021-10-03T19:43:44","modified_gmt":"2021-10-03T12:43:44","slug":"dung-song-hap-dan-do-hang-so-hubble","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/dung-song-hap-dan-do-hang-so-hubble\/","title":{"rendered":"D\u00f9ng s\u00f3ng h\u1ea5p d\u1eabn \u0111o h\u1eb1ng s\u1ed1 Hubble"},"content":{"rendered":"\n<p>C\u00e1c nh\u00e0 khoa h\u1ecdc ph\u00e1t tri\u1ec3n ph\u01b0\u01a1ng ph\u00e1p \u0111o h\u1eb1ng s\u1ed1 Hubble m\u1edbi b\u1eb1ng c\u00e1ch l\u1ee3i d\u1ee5ng s\u00f3ng h\u1ea5p d\u1eabn. Ph\u01b0\u01a1ng ph\u00e1p m\u1edbi n\u00e0y c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft m\u1ed9t trong nh\u1eefng c\u00e2u \u0111\u1ed1 l\u1edbn nh\u1ea5t c\u1ee7a thi\u00ean v\u0103n h\u1ecdc.&nbsp;<img decoding=\"async\" src=\"https:\/\/images.giaoducthoidai.vn\/Uploaded\/thuyvt\/2019-02-21\/45\/a2-tr14-FFUU.jpg\" alt=\"H\u1eb1ng s\u1ed1 Hubble m\u00f4 t\u1ea3 t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf c\u1ee7a v\u0169 tr\u1ee5.\"><em>H\u1eb1ng s\u1ed1 Hubble m\u00f4 t\u1ea3 t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf c\u1ee7a v\u0169 tr\u1ee5.<\/em><\/p>\n\n\n\n<p>H\u1eb1ng s\u1ed1 Hubble l\u00e0 tham s\u1ed1 m\u00f4 t\u1ea3 t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf c\u1ee7a v\u0169 tr\u1ee5. Tuy nhi\u00ean, h\u1eb1ng s\u1ed1 Hubble ho\u00e0n to\u00e0n kh\u00f4ng c\u1ed1 \u0111\u1ecbnh. Hai ph\u01b0\u01a1ng ph\u00e1p \u0111o t\u1ed1t nh\u1ea5t \u0111\u1ed1i v\u1edbi h\u1eb1ng s\u1ed1 Hubble cho hai k\u1ebft qu\u1ea3 kh\u00e1c nhau. \u0110i\u1ec1u \u0111\u00f3 cho th\u1ea5y c\u00f3 m\u1ed9t c\u00e1i g\u00ec \u0111\u00f3 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi m\u00f4 h\u00ecnh v\u0169 tr\u1ee5 h\u1ecdc.<\/p>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p \u0111o th\u1ee9 ba c\u0169ng \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m ch\u01b0a l\u00e2u, tuy nhi\u00ean n\u00f3 c\u0169ng kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c v\u1ea5n \u0111\u1ec1. Hi\u1ec7n gi\u1edd c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u1ec1 xu\u1ea5t th\u1eed nghi\u1ec7m ph\u01b0\u01a1ng ph\u00e1p \u0111o m\u1edbi \u0111\u1ed1i v\u1edbi h\u1eb1ng s\u1ed1 Hubble, b\u1eb1ng c\u00e1ch l\u1ee3i d\u1ee5ng s\u00f3ng h\u1ea5p d\u1eabn xu\u1ea5t ph\u00e1t t\u1eeb v\u1ee5 va ch\u1ea1m 2 sao neutr<a rel=\"noreferrer noopener\" href=\"https:\/\/urekamedia.com\/\" target=\"_blank\"><\/a><\/p>\n\n\n\n<p>\u201cH\u1eb1ng s\u1ed1 Hubble l\u00e0 m\u1ed9t trong nh\u1eefng gi\u00e1 tr\u1ecb quan tr\u1ecdng nh\u1ea5t trong v\u0169 tr\u1ee5 h\u1ecdc, b\u1edfi v\u00ec n\u00f3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 cong c\u1ee7a kh\u00f4ng gian v\u00e0 tu\u1ed5i c\u1ee7a v\u0169 tr\u1ee5. Ch\u00fang ta c\u00f3 th\u1ec3 \u0111o h\u1eb1ng s\u1ed1 Hubble b\u1eb1ng 2 ph\u01b0\u01a1ng ph\u00e1p \u2013 ph\u01b0\u01a1ng ph\u00e1p th\u1ee9 nh\u1ea5t s\u1eed d\u1ee5ng sao bi\u1ebfn quang (cepheid) v\u00e0 si\u00eau t\u00e2n tinh trong v\u0169 tr\u1ee5 l\u00e2n c\u1eadn; ph\u01b0\u01a1ng ph\u00e1p th\u1ee9 hai d\u1ef1a tr\u00ean c\u00e1c ph\u00e9p \u0111o \u0111\u1ed1i v\u1edbi b\u1ee9c x\u1ea1 v\u0169 tr\u1ee5 n\u1ec1n t\u1eeb v\u0169 tr\u1ee5 non tr\u1ebb.<\/p>\n\n\n\n<p>Hai ph\u01b0\u01a1ng ph\u00e1p n\u00e0y kh\u00f4ng cho k\u1ebft qu\u1ea3 gi\u1ed1ng nhau. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 th\u1ec3 ch\u1ee9ng t\u1ecf m\u00f4 h\u00ecnh v\u0169 tr\u1ee5 h\u1ecdc c\u00f3 khuy\u1ebft thi\u1ebfu\u201d \u2013 N\u1eef Gi\u00e1o s\u01b0 Hiranya Peiris \u1edf Tr\u01b0\u1eddng \u0110H London, cho bi\u1ebft nh\u01b0 v\u1eady.<\/p>\n\n\n\n<p>C\u00e1c s\u00f3ng h\u1ea5p d\u1eabn l\u00e0 \u201cn\u1ebfp nh\u0103n\u201d kh\u00f4ng \u2013 th\u1eddi gian, do t\u01b0\u01a1ng t\u00e1c c\u00e1c v\u1eadt th\u1ec3 kh\u1ed5ng l\u1ed3 g\u00e2y ra (trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y l\u00e0 s\u1ef1 li\u00ean k\u1ebft hai ng\u00f4i sao neutron).<\/p>\n\n\n\n<p>S\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng m\u00e1y d\u00f2 s\u00f3ng h\u1ea5p d\u1eabn LIGO v\u00e0 Virgo, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 \u0111o nh\u1eefng dao \u0111\u1ed9ng nh\u1ecf n\u00e0y, nh\u1eb1m x\u00e1c \u0111\u1ecbnh xem ch\u00fang t\u1eeb \u0111\u00e2u t\u1edbi. Sau \u0111\u00f3, h\u1ecd c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c v\u1eadn t\u1ed1c m\u00e0 c\u00e1c thi\u00ean th\u1ec3 r\u1eddi xa ch\u00fang ta. K\u1ebft h\u1ee3p v\u1eadn t\u1ed1c v\u00e0 kho\u1ea3ng c\u00e1ch, c\u00f3 th\u1ec3 \u01b0\u1edbc l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c h\u1eb1ng s\u1ed1 Hubble.<\/p>\n\n\n\n<p>\u201cCh\u00fang t\u00f4i cho r\u1eb1ng, n\u1ebfu quan s\u00e1t 50 sao neutron k\u00e9p trong th\u1eadp ni\u00ean t\u1edbi, th\u00ec ch\u00fang ta c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ee7 d\u1eef li\u1ec7u \u0111\u1ec3 ti\u1ebfp t\u1ee5c \u0111o h\u1eb1ng s\u1ed1 Hubble. Ch\u00fang ta c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 n\u00e0y trong v\u00f2ng 5 &#8211; 10 n\u0103m\u201d \u2013 Ti\u1ebfn s\u0129 Stephen Feeney \u1edf Vi\u1ec7n Nghi\u00ean c\u1ee9u Flatiron (M\u1ef9) cho bi\u1ebft nh\u01b0 v\u1eady.<\/p>\n\n\n\n<p>Nh\u1edd c\u00e1c ph\u00e9p \u0111o ch\u00ednh x\u00e1c h\u1eb1ng s\u1ed1 Hubble, c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc c\u00f3 th\u1ec3 ki\u1ec3m ch\u1ee9ng xem m\u00f4 h\u00ecnh v\u0169 tr\u1ee5 h\u1ecdc hi\u1ec7n t\u1ea1i c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi th\u1ef1c t\u1ebf hay kh\u00f4ng.<\/p>\n\n\n\n<p>Theo Nauka<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\u00e1c nh\u00e0 khoa h\u1ecdc ph\u00e1t tri\u1ec3n ph\u01b0\u01a1ng ph\u00e1p \u0111o h\u1eb1ng s\u1ed1 Hubble m\u1edbi b\u1eb1ng c\u00e1ch l\u1ee3i d\u1ee5ng s\u00f3ng h\u1ea5p d\u1eabn. Ph\u01b0\u01a1ng ph\u00e1p m\u1edbi n\u00e0y c\u00f3 th\u1ec3 gi\u1ea3i quy\u1ebft m\u1ed9t trong nh\u1eefng c\u00e2u \u0111\u1ed1 l\u1edbn nh\u1ea5t c\u1ee7a thi\u00ean v\u0103n h\u1ecdc.&nbsp;H\u1eb1ng s\u1ed1 Hubble m\u00f4 t\u1ea3 t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf c\u1ee7a v\u0169 tr\u1ee5. H\u1eb1ng s\u1ed1 Hubble l\u00e0 tham [&hellip;]<\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-28639","post","type-post","status-publish","format-standard","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=28639"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28639\/revisions"}],"predecessor-version":[{"id":28640,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28639\/revisions\/28640"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=28639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=28639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=28639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}