{"id":17052,"date":"2021-07-14T05:59:02","date_gmt":"2021-07-14T05:59:02","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=17052"},"modified":"2021-07-14T05:59:02","modified_gmt":"2021-07-14T05:59:02","slug":"star-tau-boo-magnetic-field-flip","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/astronomy\/star-tau-boo-magnetic-field-flip\/","title":{"rendered":"Ng\u00f4i sao Tau Boo: S\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng \u0111\u1ed9c \u0111\u00e1o"},"content":{"rendered":"

Star Tau Boo: S\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng \u0111\u1ed9c \u0111\u00e1o<\/h2>\n\n

T\u1eeb tr\u01b0\u1eddng c\u1ee7a M\u1eb7t tr\u1eddi<\/h2>\n\n

M\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi h\u00e0nh vi \u0111\u1ed9ng, bao g\u1ed3m s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng theo chu k\u1ef3. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng, x\u1ea3y ra kho\u1ea3ng 11 n\u0103m m\u1ed9t l\u1ea7n, v\u1edbi c\u1ef1c b\u1eafc v\u00e0 c\u1ef1c nam ho\u00e1n \u0111\u1ed5i v\u1ecb tr\u00ed. Nguy\u00ean nh\u00e2n g\u00e2y ra s\u1ef1 \u0111\u1ea3o c\u1ef1c n\u00e0y v\u1eabn ch\u01b0a \u0111\u01b0\u1ee3c hi\u1ec3u \u0111\u1ea7y \u0111\u1ee7.<\/p>\n\n

Chu k\u1ef3 t\u1eeb tr\u01b0\u1eddng nhanh c\u1ee7a Tau Boo<\/h2>\n\n

G\u1ea7n \u0111\u00e2y, c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u00e3 quan s\u00e1t th\u1ea5y m\u1ed9t s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng t\u01b0\u01a1ng t\u1ef1 \u1edf m\u1ed9t ng\u00f4i sao c\u00f3 t\u00ean l\u00e0 Tau Boo, n\u1eb1m c\u00e1ch xa 51 n\u0103m \u00e1nh s\u00e1ng. Tuy nhi\u00ean, s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng c\u1ee7a Tau Boo di\u1ec5n ra nhanh h\u01a1n nhi\u1ec1u so v\u1edbi M\u1eb7t tr\u1eddi, ho\u00e0n th\u00e0nh m\u1ed9t chu k\u1ef3 \u0111\u1ea7y \u0111\u1ee7 ch\u1ec9 trong hai n\u0103m thay v\u00ec 22 n\u0103m.<\/p>\n\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u1ed9t h\u00e0nh tinh c\u00f3 qu\u1ef9 \u0111\u1ea1o g\u1ea7n<\/h2>\n\n

M\u1ed9t s\u1ef1 kh\u00e1c bi\u1ec7t th\u00fa v\u1ecb gi\u1eefa Tau Boo v\u00e0 M\u1eb7t tr\u1eddi l\u00e0 s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a m\u1ed9t h\u00e0nh tinh kh\u1ed5ng l\u1ed3 quay r\u1ea5t g\u1ea7n ng\u00f4i sao. H\u00e0nh tinh n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 “Sao M\u1ed9c n\u00f3ng”, ho\u00e0n th\u00e0nh m\u1ed9t qu\u1ef9 \u0111\u1ea1o ch\u1ec9 trong 3,3 ng\u00e0y. C\u00e1c nh\u00e0 khoa h\u1ecdc suy \u0111o\u00e1n r\u1eb1ng c\u00e1c t\u01b0\u01a1ng t\u00e1c h\u1ea5p d\u1eabn gi\u1eefa Tau Boo v\u00e0 h\u00e0nh tinh c\u1ee7a n\u00f3 c\u00f3 th\u1ec3 l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng c\u1ee7a ng\u00f4i sao.<\/p>\n\n

T\u01b0\u01a1ng t\u00e1c th\u1ee7y tri\u1ec1u v\u00e0 s\u1ef1 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng<\/h2>\n\n

T\u01b0\u01a1ng t\u00e1c th\u1ee7y tri\u1ec1u x\u1ea3y ra khi hai v\u1eadt th\u1ec3 t\u00e1c \u0111\u1ed9ng l\u1ef1c h\u1ea5p d\u1eabn l\u00ean nhau, g\u00e2y ra s\u1ef1 bi\u1ebfn d\u1ea1ng v\u1ec1 h\u00ecnh d\u1ea1ng c\u1ee7a ch\u00fang. Trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a Tau Boo, l\u1ef1c th\u1ee7y tri\u1ec1u t\u1eeb Sao M\u1ed9c n\u00f3ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 quay c\u1ee7a ng\u00f4i sao, t\u1eeb \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 t\u1ea1o ra t\u1eeb tr\u01b0\u1eddng c\u1ee7a n\u00f3.<\/p>\n\n

\u00dd ngh\u0129a \u0111\u1ed1i v\u1edbi nghi\u00ean c\u1ee9u v\u1ec1 M\u1eb7t tr\u1eddi<\/h2>\n\n

Vi\u1ec7c ph\u00e1t hi\u1ec7n ra s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng nhanh c\u1ee7a Tau Boo cung c\u1ea5p m\u1ed9t c\u01a1 h\u1ed9i c\u00f3 gi\u00e1 tr\u1ecb cho c\u00e1c nh\u00e0 khoa h\u1ecdc \u0111\u1ec3 nghi\u00ean c\u1ee9u hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y trong m\u1ed9t b\u1ed1i c\u1ea3nh sao kh\u00e1c. B\u1eb1ng c\u00e1ch so s\u00e1nh h\u00e0nh vi c\u1ee7a Tau Boo v\u1edbi M\u1eb7t tr\u1eddi, c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 c\u00e1c c\u01a1 ch\u1ebf ti\u1ec1m \u1ea9n ch\u1ecbu tr\u00e1ch nhi\u1ec7m cho s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng \u1edf c\u00e1c ng\u00f4i sao.<\/p>\n\n

Gi\u1ea3i m\u00e3 b\u00ed \u1ea9n v\u1ec1 s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng<\/h2>\n\n

M\u1eb7c d\u00f9 \u0111\u00e3 c\u00f3 nh\u1eefng ti\u1ebfn b\u1ed9 trong qu\u00e1 tr\u00ecnh t\u00ecm hi\u1ec3u, nh\u01b0ng nguy\u00ean nh\u00e2n ch\u00ednh x\u00e1c g\u00e2y ra s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng \u1edf c\u00e1c ng\u00f4i sao v\u1eabn l\u00e0 m\u1ed9t \u1ea9n s\u1ed1. Tuy nhi\u00ean, vi\u1ec7c nghi\u00ean c\u1ee9u Tau Boo mang l\u1ea1i m\u1ed9t g\u00f3c nh\u00ecn \u0111\u1ed9c \u0111\u00e1o v\u1ec1 qu\u00e1 tr\u00ecnh v\u1eadt l\u00fd thi\u00ean v\u0103n h\u1ea5p d\u1eabn n\u00e0y. B\u1eb1ng c\u00e1ch ki\u1ec3m tra s\u1ef1 t\u01b0\u01a1ng t\u00e1c gi\u1eefa ng\u00f4i sao v\u00e0 h\u00e0nh tinh g\u1ea7n n\u00f3, c\u00e1c nh\u00e0 khoa h\u1ecdc hy v\u1ecdng s\u1ebd l\u00e0m s\u00e1ng t\u1ecf c\u00e1c y\u1ebfu t\u1ed1 chi ph\u1ed1i h\u00e0nh vi c\u1ee7a t\u1eeb tr\u01b0\u1eddng sao.<\/p>\n\n

Nghi\u00ean c\u1ee9u \u0111ang di\u1ec5n ra v\u00e0 c\u00e1c h\u01b0\u1edbng \u0111i trong t\u01b0\u01a1ng lai<\/h2>\n\n

C\u1ea7n c\u00f3 th\u00eam nghi\u00ean c\u1ee9u \u0111\u1ec3 l\u00e0m s\u00e1ng t\u1ecf nh\u1eefng b\u00ed \u1ea9n xung quanh s\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng c\u1ee7a Tau Boo. C\u00e1c nh\u00e0 khoa h\u1ecdc c\u00f3 k\u1ebf ho\u1ea1ch ti\u1ebfp t\u1ee5c theo d\u00f5i ng\u00f4i sao \u0111\u1ec3 thu th\u1eadp th\u00eam d\u1eef li\u1ec7u v\u00e0 ki\u1ec3m tra c\u00e1c gi\u1ea3 thuy\u1ebft c\u1ee7a h\u1ecd. B\u1eb1ng c\u00e1ch nghi\u00ean c\u1ee9u m\u1ed9t lo\u1ea1t c\u00e1c ng\u00f4i sao r\u1ed9ng h\u01a1n v\u1edbi c\u00e1c h\u1ec7 h\u00e0nh tinh kh\u00e1c nhau, h\u1ecd \u0111\u1eb7t m\u1ee5c ti\u00eau x\u00e1c \u0111\u1ecbnh c\u00e1c m\u1eabu chung v\u00e0 ph\u00e1t tri\u1ec3n s\u1ef1 hi\u1ec3u bi\u1ebft to\u00e0n di\u1ec7n h\u01a1n v\u1ec1 h\u00e0nh vi c\u1ee7a t\u1eeb tr\u01b0\u1eddng sao.<\/p>\n\n

T\u1ea7m quan tr\u1ecdng c\u1ee7a t\u1eeb tr\u01b0\u1eddng sao<\/h2>\n\n

T\u1eeb tr\u01b0\u1eddng \u0111\u00f3ng m\u1ed9t vai tr\u00f2 r\u1ea5t quan tr\u1ecdng trong cu\u1ed9c s\u1ed1ng c\u1ee7a c\u00e1c ng\u00f4i sao. Ch\u00fang \u0111i\u1ec1u ch\u1ec9nh d\u00f2ng ch\u1ea3y c\u1ee7a n\u0103ng l\u01b0\u1ee3ng v\u00e0 c\u00e1c h\u1ea1t, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ho\u1ea1t \u0111\u1ed9ng c\u1ee7a sao v\u00e0 \u0111\u1ecbnh h\u00ecnh m\u00f4i tr\u01b0\u1eddng xung quanh. Vi\u1ec7c hi\u1ec3u \u0111\u01b0\u1ee3c h\u00e0nh vi c\u1ee7a t\u1eeb tr\u01b0\u1eddng sao l\u00e0 r\u1ea5t c\u1ea7n thi\u1ebft \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c s\u00e2u h\u01a1n v\u1ec1 s\u1ef1 ti\u1ebfn h\u00f3a c\u1ee7a sao v\u00e0 b\u1ee9c tranh v\u0169 tr\u1ee5 r\u1ed9ng l\u1edbn h\u01a1n.<\/p>","protected":false},"excerpt":{"rendered":"

Star Tau Boo: S\u1ef1 \u0111\u1ea3o c\u1ef1c t\u1eeb tr\u01b0\u1eddng \u0111\u1ed9c \u0111\u00e1o T\u1eeb tr\u01b0\u1eddng c\u1ee7a M\u1eb7t tr\u1eddi M\u1eb7t tr\u1eddi c\u1ee7a ch\u00fang ta \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi h\u00e0nh vi \u0111\u1ed9ng, bao g\u1ed3m s\u1ef1…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[437],"tags":[22505,982,22506,22508,22507],"class_list":["post-17052","post","type-post","status-publish","format-standard","hentry","category-astronomy","tag-magnetic-field-flip","tag-exoplanets","tag-star-tau-boo","tag-tidal-interactions","tag-stellar-astrophysics"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/17052","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/comments?post=17052"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/17052\/revisions"}],"predecessor-version":[{"id":17053,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/17052\/revisions\/17053"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=17052"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=17052"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=17052"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}