{"id":28706,"date":"2019-03-08T20:40:00","date_gmt":"2019-03-08T13:40:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=28706"},"modified":"2021-10-03T20:41:42","modified_gmt":"2021-10-03T13:41:42","slug":"tim-dau-vet-nen-van-minh-quanh-ngoi-sao-tabby","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/tim-dau-vet-nen-van-minh-quanh-ngoi-sao-tabby\/","title":{"rendered":"T\u00ecm d\u1ea5u v\u1ebft n\u1ec1n v\u0103n minh quanh ng\u00f4i sao Tabby"},"content":{"rendered":"\n<p>Su\u1ed1t th\u1eddi gian d\u00e0i, ng\u00f4i sao KIC 8462852, c\u00f2n g\u1ecdi l\u00e0 Tabby, \u0111\u00e3 l\u00e0m c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc ng\u1ea1c nhi\u00ean b\u1edfi s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 s\u00e1ng kh\u00f4ng \u0111\u1ec1u \u0111\u1eb7n trong th\u1eddi gian t\u01b0\u01a1ng \u0111\u1ed1i ng\u1eafn.&nbsp;&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/images.giaoducthoidai.vn\/Uploaded\/thuyvt\/2019-03-06\/56\/a2-tr14-QHPH.jpg\" alt=\"T\u00ecm d\u1ea5u v\u1ebft n\u1ec1n v\u0103n minh quanh ng\u00f4i sao Tabby\"\/><\/figure>\n\n\n\n<p>C\u00e1c chuy\u00ean gia c\u0169ng tranh c\u00e3i v\u1ec1 nguy\u00ean nh\u00e2n g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng b\u1ea5t th\u01b0\u1eddng n\u00e0y c\u1ee7a ng\u00f4i sao. M\u1ed9t trong c\u00e1c gi\u1ea3 thuy\u1ebft n\u00f3i r\u1eb1ng s\u1ef1 suy gi\u1ea3m \u0111\u1ed9 s\u00e1ng \u0111\u00f3 l\u00e0 k\u1ebft qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a m\u1ed9t n\u1ec1n v\u0103n minh ngo\u00e0i Tr\u00e1i \u0111\u1ea5t.Gi\u1ea3 thuy\u1ebft \u0111\u1ea7u ti\u00ean li\u00ean quan \u0111\u1ebfn s\u1ef1 suy gi\u1ea3m \u0111\u1ed9 s\u00e1ng ng\u00f4i sao Tabby cho r\u1eb1ng m\u1ed9t \u0111\u00e1m m\u00e2y c\u00e1c sao ch\u1ed5i c\u00f3 th\u1ec3 \u1edf g\u1ea7n ng\u00f4i sao, n\u00ean \u0111\u00e3 t\u00ecnh c\u1edd che ph\u1ee7 m\u1ed9t ph\u1ea7n b\u1ec1 m\u1eb7t ng\u00f4i sao.M\u1ed9t gi\u1ea3 thuy\u1ebft kh\u00e1c n\u00f3i r\u1eb1ng xung quanh ng\u00f4i sao c\u00f3 c\u00e1i g\u1ecdi l\u00e0 m\u1eb7t c\u1ea7u Dyson &#8211; m\u1ed9t c\u1ea5u tr\u00fac phi t\u1ef1 nhi\u00ean c\u1ee7a m\u1ed9t n\u1ec1n v\u0103n minh ti\u00ean ti\u1ebfn, ph\u00e1t tri\u1ec3n h\u01a1n ch\u00fang ta r\u1ea5t nhi\u1ec1u.<\/p>\n\n\n\n<p>\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh, c\u00f3 bao nhi\u00eau ph\u1ea7n tr\u0103m s\u1ef1 th\u1eadt trong \u0111\u00f3, c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc b\u1eaft \u0111\u1ea7u t\u00ecm ki\u1ebfm nh\u1eefng t\u00edn hi\u1ec7u ch\u1ee9ng t\u1ecf c\u00f3 n\u1ec1n v\u0103n minh n\u00e0o \u0111\u00f3 \u1edf g\u1ea7n ng\u00f4i sao kh\u00e1c th\u01b0\u1eddng n\u00e0y. V\u1eeba qua, m\u1ed9t nh\u00f3m c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc \u1edf \u0110H Berkeley (M\u1ef9) \u0111\u00e3 ti\u1ebfn h\u00e0nh nghi\u00ean c\u1ee9u v\u1edbi m\u1ee5c \u0111\u00edch t\u00ecm ki\u1ebfm c\u00e1c ch\u1ee9ng c\u1edb v\u1ec1 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00f4ng ngh\u1ec7 ngo\u00e0i Tr\u00e1i \u0111\u1ea5t.<\/p>\n\n\n\n<p>C\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 ph\u00e2n t\u00edch 177 b\u1ee9c \u1ea3nh quang ph\u1ed5 ng\u00f4i sao Tabby v\u1edbi \u0111\u1ed9 ph\u00e2n gi\u1ea3i cao, ch\u1ee5p qua K\u00ednh vi\u1ec5n v\u1ecdng Automated Planet Finder (\u0111\u1eb7t \u1edf California, M\u1ef9).<\/p>\n\n\n\n<p>Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong d\u1ea3i b\u01b0\u1edbc s\u00f3ng t\u1eeb 374 \u0111\u1ebfn 970 nm. \u0110\u1ed1i t\u01b0\u1ee3ng t\u00ecm ki\u1ebfm l\u00e0 c\u00e1c d\u1ea5u v\u1ebft laser v\u1edbi c\u00f4ng su\u1ea5t tr\u00ean 24 MW \u2013 \u0111\u00e2y l\u00e0 c\u1eadn d\u01b0\u1edbi c\u1ee7a \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb \u0111\u1ed1i v\u1edbi kho\u1ea3ng c\u00e1ch \u0111\u1ebfn ng\u00f4i sao l\u00e0 1.470 n\u0103m \u00e1nh s\u00e1ng. M\u1ed9t thu\u1eadt to\u00e1n \u0111\u1eb7c bi\u1ec7t \u0111\u00e3 ph\u00e2n t\u00edch quang ph\u1ed5 nh\u1eb1m t\u00ecm ki\u1ebfm c\u00e1c v\u1ea1ch ph\u00e1t x\u1ea1 c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong qu\u00e1 tr\u00ecnh ph\u00f3ng laser.<\/p>\n\n\n\n<p>K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u cho th\u1ea5y, ng\u01b0\u1eddi ta \u0111\u00e3 \u0111\u1ecbnh ngh\u0129a \u0111\u01b0\u1ee3c 58 t\u00edn hi\u1ec7u c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u1ec1n v\u0103n minh ngo\u00e0i Tr\u00e1i \u0111\u1ea5t. Ph\u00e1t hi\u1ec7n n\u00e0y b\u1ea5t ng\u1edd t\u1edbi m\u1ee9c c\u00e1c chuy\u00ean gia kh\u00f4ng tin v\u00e0 b\u1eaft \u0111\u1ea7u t\u00ecm ki\u1ebfm c\u00e1c l\u1eddi gi\u1ea3i h\u1ee3p l\u00fd h\u01a1n.<\/p>\n\n\n\n<p>C\u00e1c nh\u00e0 khoa h\u1ecdc ti\u1ebfp t\u1ee5c th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e2n t\u00edch d\u1eef li\u1ec7u \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem c\u00e1c t\u00edn hi\u1ec7u \u0111\u00f3 l\u00e0 g\u00ec. \u0110\u00e3 c\u00f3 ph\u1ecfng \u0111o\u00e1n v\u1ec1 t\u01b0\u01a1ng t\u00e1c b\u1ee9c x\u1ea1 v\u0169 tr\u1ee5 ho\u1eb7c s\u1ef1 thay \u0111\u1ed5i trong quang ph\u1ed5 ng\u00f4i sao. H\u1ecd x\u00e1c \u0111\u1ecbnh r\u1eb1ng, c\u00e1c t\u00edn hi\u1ec7u n\u00e0y kh\u00f4ng c\u00f3 li\u00ean quan g\u00ec \u0111\u1ebfn b\u1ee9c x\u1ea1 laser v\u00e0 ngu\u1ed3n g\u1ed1c c\u1ee7a ch\u00fang l\u00e0 c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng t\u1ef1 nhi\u00ean.<\/p>\n\n\n\n<p>M\u1eb7c d\u00f9 v\u1eady, c\u00e1c t\u00e1c gi\u1ea3 c\u00f4ng tr\u00ecnh nghi\u00ean c\u1ee9u cho r\u1eb1ng b\u00ed m\u1eadt c\u1ee7a ng\u00f4i sao Tabby v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c gi\u1ea3i m\u00e3 h\u1ebft v\u00e0 c\u1ea7n ph\u1ea3i c\u00f3 c\u00e1c nghi\u00ean c\u1ee9u ti\u1ebfp theo \u0111\u1ed1i v\u1edbi quang ph\u1ed5 ng\u00f4i sao Tabby v\u00e0 c\u00e1c ng\u00f4i sao kh\u00e1c. \u0110i\u1ec1u n\u00e0y l\u00e0 kh\u1ea3 thi nh\u1edd ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch do h\u1ecd ph\u00e1t tri\u1ec3n v\u1edbi c\u00e1c thu\u1eadt to\u00e1n \u0111\u1eb7c bi\u1ec7t.<\/p>\n\n\n\n<p>Theo Nauka<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Su\u1ed1t th\u1eddi gian d\u00e0i, ng\u00f4i sao KIC 8462852, c\u00f2n g\u1ecdi l\u00e0 Tabby, \u0111\u00e3 l\u00e0m c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc ng\u1ea1c nhi\u00ean b\u1edfi s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9 s\u00e1ng kh\u00f4ng \u0111\u1ec1u \u0111\u1eb7n trong th\u1eddi gian t\u01b0\u01a1ng \u0111\u1ed1i ng\u1eafn.&nbsp;&nbsp; C\u00e1c chuy\u00ean gia c\u0169ng tranh c\u00e3i v\u1ec1 nguy\u00ean nh\u00e2n g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng b\u1ea5t th\u01b0\u1eddng n\u00e0y c\u1ee7a ng\u00f4i sao. [&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-28706","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\/28706","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=28706"}],"version-history":[{"count":1,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28706\/revisions"}],"predecessor-version":[{"id":28707,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/28706\/revisions\/28707"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=28706"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=28706"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=28706"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}