{"id":7724,"date":"2017-10-18T23:27:23","date_gmt":"2017-10-18T16:27:23","guid":{"rendered":"http:\/\/ttud.com.vn\/?p=7724"},"modified":"2017-12-03T23:31:18","modified_gmt":"2017-12-03T16:31:18","slug":"phat-hien-dot-pha-moi-ve-nguon-goc-vat-chat-trong-vu-tru","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/phat-hien-dot-pha-moi-ve-nguon-goc-vat-chat-trong-vu-tru\/","title":{"rendered":"Ph\u00e1t hi\u1ec7n \u0111\u1ed9t ph\u00e1 m\u1edbi v\u1ec1 ngu\u1ed3n g\u1ed1c v\u1eadt ch\u1ea5t trong v\u0169 tr\u1ee5"},"content":{"rendered":"
\"\"<\/div>\n
M\u00f4 ph\u1ecfng v\u1ee5 va ch\u1ea1m gi\u1eefa hai ng\u00f4i sao neutron. (Ngu\u1ed3n: nytimes.com)<\/em><\/div>\n

M\u1ed9t n\u1eeda s\u1ed1 v\u00e0ng trong v\u0169 tr\u1ee5 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb v\u1ee5 va ch\u1ea1m gi\u1eefa hai ng\u00f4i sao neutron \u0111\u1eb7c trong ng\u00e2n h\u00e0. \u0110\u00e2y l\u00e0 k\u1ebft lu\u1eadn t\u1eeb c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc M\u1ef9 v\u00e0 ch\u00e2u \u00c2u c\u00f4ng b\u1ed1 ng\u00e0y 16\/10.<\/p>\n

Ph\u00e1t hi\u1ec7n mang t\u00ednh \u0111\u1ed9t ph\u00e1 n\u00e0y \u0111\u00e3 gi\u00fap gi\u1edbi khoa h\u1ecdc gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c m\u1ed9t s\u1ed1 c\u00e2u h\u1ecfi v\u1eadt l\u00fd h\u00f3c b\u00faa.<\/p>\n

Th\u00e1ng T\u00e1m v\u1eeba qua, c\u00e1c \u0110\u00e0i quan s\u00e1t s\u00f3ng h\u1ea5p d\u1eabn b\u1eb1ng giao thoa k\u1ebf laser (Ligo) t\u1ea1i bang Washington v\u00e0 Louisiana, c\u00f9ng v\u1edbi \u0111\u00e0i quan s\u00e1t Virgo t\u1ea1i Italy \u0111\u00e3 l\u1ea7n \u0111\u1ea7u ti\u00ean ph\u00e1t hi\u1ec7n ra s\u00f3ng h\u1ea5p d\u1eabn do s\u1ef1 va ch\u1ea1m gi\u1eefa hai ng\u00f4i sao neutron t\u1eeb c\u00e1ch \u0111\u00e2y 130 tri\u1ec7u n\u0103m.<\/p>\n

Ch\u1ec9 hai gi\u00e2y sau \u0111\u00f3, c\u00e1c \u0111\u00e0i quan s\u00e1t tr\u00ean kh\u1eafp Tr\u00e1i \u0110\u1ea5t \u0111\u00e3 ph\u00e1t hi\u1ec7n ch\u00f9m tia s\u00e1ng d\u01b0\u1edbi d\u1ea1ng tia Gamma t\u1eeb c\u00f9ng m\u1ed9t khu v\u1ef1c \u1edf b\u1ea7u tr\u1eddi ph\u00eda Nam. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch cho th\u1ea5y ch\u00fang c\u00f3 c\u00f9ng mu\u1ed3n ngu\u1ed3n g\u1ed1c v\u1edbi c\u00e1c s\u00f3ng h\u1ea5p d\u1eabn tr\u00ean.<\/p>\n

V\u1edbi \u0111\u01b0\u1eddng k\u00ednh trung b\u00ecnh v\u00e0o kho\u1ea3ng 20km song l\u1ea1i c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn h\u01a1n M\u1eb7t Tr\u1eddi, c\u00e1c ng\u00f4i sao neutron l\u00e0 nh\u1eefng ng\u00f4i sao si\u00eau \u0111\u1eb7c v\u00e0 c\u00f3 \u0111\u1ed9 ph\u00f3ng x\u1ea1 cao. Qu\u00e1 tr\u00ecnh quan s\u00e1t v\u1ee5 va ch\u1ea1m \u0111\u00e3 x\u00e1c nh\u1eadn r\u1eb1ng v\u00e0ng, b\u1ea1ch kim v\u00e0 c\u00e1c kim lo\u1ea1i n\u1eb7ng kh\u00e1c \u0111\u00e3 b\u1ecb n\u1ed5 tung trong kh\u00f4ng gian sau khi c\u00e1c ng\u00f4i sao n\u00e0y nh\u1eadp l\u00e0m m\u1ed9t, qua \u0111\u00f3 c\u1ee7ng c\u1ed1 gi\u1ea3 thuy\u1ebft r\u1eb1ng c\u00e1c s\u1ef1 ki\u1ec7n ki\u1ec3u nh\u01b0 v\u1eady ch\u00ednh l\u00e0 ngu\u1ed3n g\u1ed1c t\u1ea1o ra nh\u1eefng kim lo\u1ea1i tr\u00ean.<\/p>\n

B\u00ean c\u1ea1nh \u0111\u00f3, ph\u00e1t hi\u1ec7n m\u1edbi c\u0169ng x\u00e1c nh\u1eadn gi\u1ea3 thuy\u1ebft kh\u00e1c c\u1ee7a nh\u00e0 khoa h\u1ecdc Albert Einstein r\u1eb1ng s\u00f3ng h\u1ea5p d\u1eabn v\u00e0 \u00e1nh s\u00e1ng c\u00f3 c\u00f9ng t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n v\u00e0o kho\u1ea3ng g\u1ea7n 299.800 km\/gi\u00e2y. C\u00e1c thi\u1ebft b\u1ecb c\u1ee7a LIGO \u0111\u00e3 s\u1eed d\u1ee5ng laser \u0111\u1ec3 ph\u00e1t hi\u1ec7n nh\u1eefng rung \u0111\u1ed9ng nh\u1ecf t\u1eeb s\u00f3ng h\u1ea5p d\u1eabn khi ch\u00fang \u0111i qua Tr\u00e1i \u0110\u1ea5t.
\n
\nPh\u00e1t hi\u1ec7n m\u1edbi c\u00f3 th\u1ec3 l\u00e0m thay \u0111\u1ed5i thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a Einstein<\/strong><\/p>\n

S\u00f3ng h\u1ea5p d\u1eabn \u0111\u00e3 \u0111\u01b0\u1ee3c nh\u00e0 khoa h\u1ecdc Einstein ti\u00ean \u0111o\u00e1n v\u00e0o n\u0103m 1916, k\u1ebft qu\u1ea3 t\u1eeb h\u1ecdc thuy\u1ebft t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a \u00f4ng, trong \u0111\u00f3 mi\u00eau t\u1ea3 l\u1ef1c h\u1ea5p d\u1eabn l\u00e0 s\u1ef1 bi\u1ebfn d\u1ea1ng v\u1ec1 kh\u00f4ng gian v\u1ec1 th\u1eddi gian do s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a v\u1eadt ch\u1ea5t.<\/p>\n

Ch\u01b0a \u0111\u1ea7y hai n\u0103m tr\u01b0\u1edbc, c\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1i Vi\u1ec7n C\u00f4ng nghi\u1ec7p Massachusetts v\u00e0 Vi\u1ec7n C\u00f4ng ngh\u1ec7 California \u0111\u00e3 x\u00e1c nh\u1eadn ti\u00ean \u0111o\u00e1n n\u00e0y khi l\u1ea7n \u0111\u1ea7u ti\u00ean ph\u00e1t hi\u1ec7n ra s\u00f3ng h\u1ea5p d\u1eabn t\u1eeb hai h\u1ed1 \u0111en. Ph\u00e1t hi\u1ec7n v\u1ec1 s\u00f3ng h\u1ea5p d\u1eabn c\u0169ng \u0111\u00e3 mang l\u1ea1i gi\u1ea3i th\u01b0\u1edfng Nobel V\u1eadt l\u00fd danh gi\u00e1 cho ba nh\u00e0 khoa h\u1ecdc M\u1ef9 l\u00e0 Barry Barish, Kip Thorne v\u00e0 Rainer Weiss v\u00e0o \u0111\u1ea7u th\u00e1ng n\u00e0y.<\/p>\n

Tr\u01b0\u1edbc \u0111\u00e2y, c\u00e1c nh\u00e0 khoa h\u1ecdc ch\u1ec9 c\u00f3 th\u1ec3 nghi\u00ean c\u1ee9u kh\u00f4ng gian th\u00f4ng qua vi\u1ec7c quan s\u00e1t c\u00e1c s\u00f3ng \u0111i\u1ec7n t\u1eed nh\u01b0 s\u00f3ng radio, \u00e1nh s\u00e1ng h\u1eefu h\u00ecnh, tia h\u1ed3ng ngo\u1ea1i, tia X v\u00e0 gamma. Khi di chuy\u1ec3n kh\u1eafp v\u0169 tr\u1ee5, c\u00e1c s\u00f3ng n\u00e0y th\u01b0\u1eddng giao thoa, song s\u00f3ng h\u1ea5p d\u1eabn th\u00ec kh\u00f4ng.<\/p>\n

C\u00e1c s\u1ed1 li\u1ec7u t\u1eeb v\u1ee5 va ch\u1ea1m tr\u00ean \u0111\u00e3 m\u1edf ra hy v\u1ecdng cho vi\u1ec7c kh\u00e1m ph\u00e1 th\u00eam nhi\u1ec1u b\u00ed \u1ea9n c\u1ee7a v\u0169 tr\u1ee5 nh\u01b0 vi\u1ec7c t\u00ednh t\u1ed1c \u0111\u1ed9 gi\u00e3n n\u1edf, c\u00e1ch th\u1ee9c v\u00e0 l\u01b0\u1ee3ng v\u1eadt ch\u1ea5t m\u00e0 v\u0169 tr\u1ee5 c\u00f3 th\u1ec3 ch\u1ee9a \u0111\u1ef1ng.\/.<\/p>\n","protected":false},"excerpt":{"rendered":"

M\u00f4 ph\u1ecfng v\u1ee5 va ch\u1ea1m gi\u1eefa hai ng\u00f4i sao neutron. (Ngu\u1ed3n: nytimes.com) M\u1ed9t n\u1eeda s\u1ed1 v\u00e0ng trong v\u0169 tr\u1ee5 \u0111\u00e3 \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb v\u1ee5 va ch\u1ea1m gi\u1eefa hai ng\u00f4i sao neutron \u0111\u1eb7c trong ng\u00e2n h\u00e0. \u0110\u00e2y l\u00e0 k\u1ebft lu\u1eadn t\u1eeb c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc M\u1ef9 v\u00e0 ch\u00e2u \u00c2u c\u00f4ng […]<\/p>\n","protected":false},"author":18,"featured_media":7725,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-7724","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7724","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\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=7724"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7724\/revisions"}],"predecessor-version":[{"id":7726,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/7724\/revisions\/7726"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/7725"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=7724"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=7724"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=7724"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}