{"id":775,"date":"2022-12-29T23:23:49","date_gmt":"2022-12-29T23:23:49","guid":{"rendered":"https:\/\/www.lifescienceart.com\/?p=775"},"modified":"2022-12-29T23:23:49","modified_gmt":"2022-12-29T23:23:49","slug":"tidal-disruption-events-a-cosmic-spectacle","status":"publish","type":"post","link":"https:\/\/www.lifescienceart.com\/vi\/science\/astrophysics\/tidal-disruption-events-a-cosmic-spectacle\/","title":{"rendered":"S\u1ef1 ki\u1ec7n ph\u00e1 v\u1ee1 th\u1ee7y tri\u1ec1u: B\u1eefa ti\u1ec7c sao c\u1ee7a h\u1ed1 \u0111en"},"content":{"rendered":"

S\u1ef1 ki\u1ec7n ph\u00e1 v\u1ee1 th\u1ee7y tri\u1ec1u: M\u1ed9t c\u1ea3nh t\u01b0\u1ee3ng v\u0169 tr\u1ee5<\/h2>\n\n

S\u1ef1 ki\u1ec7n: B\u1eefa ti\u1ec7c thi\u00ean h\u00e0 c\u1ee7a h\u1ed1 \u0111en<\/h2>\n\n

V\u00e0o ng\u00e0y 11 th\u00e1ng 2 n\u0103m 2022, m\u1ed9t s\u1ef1 ki\u1ec7n v\u0169 tr\u1ee5 phi th\u01b0\u1eddng \u0111\u00e3 di\u1ec5n ra c\u00e1ch Tr\u00e1i \u0111\u1ea5t h\u00e0ng t\u1ef7 n\u0103m \u00e1nh s\u00e1ng. M\u1ed9t ng\u00f4i sao \u0111\u00e3 \u0111i qu\u00e1 g\u1ea7n m\u1ed9t h\u1ed1 \u0111en si\u00eau l\u1edbn, d\u1eabn \u0111\u1ebfn m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng hi\u1ebfm g\u1eb7p \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u1ef1 ki\u1ec7n ph\u00e1 v\u1ee1 th\u1ee7y tri\u1ec1u (TDE).<\/p>\n\n

Trong qu\u00e1 tr\u00ecnh TDE, l\u1ef1c h\u1ea5p d\u1eabn c\u1ef1c l\u1edbn c\u1ee7a h\u1ed1 \u0111en x\u00e9 n\u00e1t ng\u00f4i sao, t\u1ea1o ra c\u00e1c d\u00f2ng v\u1eadt ch\u1ea5t \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 “m\u00ec s\u1ee3i h\u00f3a”. Khi v\u1eadt ch\u1ea5t n\u00e0y r\u01a1i v\u00e0o h\u1ed1 \u0111en, n\u00f3 gi\u1ea3i ph\u00f3ng m\u1ed9t lu\u1ed3ng n\u0103ng l\u01b0\u1ee3ng s\u00e1ng ch\u00f3i m\u00e0 c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n \u0111\u01b0\u1ee3c.<\/p>\n\n

Ph\u00e1t hi\u1ec7n: M\u1ed9t tia s\u00e1ng trong b\u00f3ng t\u1ed1i<\/h2>\n\n

S\u1ef1 ki\u1ec7n TDE, \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean l\u00e0 AT 2022cmc, l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n b\u1edfi cu\u1ed9c kh\u1ea3o s\u00e1t thi\u00ean v\u0103n Zwicky Transient Facility. \u0110\u1ed9 s\u00e1ng \u0111\u1eb7c bi\u1ec7t c\u1ee7a n\u00f3 ngay l\u1eadp t\u1ee9c g\u00e2y ch\u00fa \u00fd, v\u01b0\u1ee3t xa d\u1ef1 ki\u1ebfn c\u1ee7a m\u1ed9t v\u1ee5 n\u1ed5 tia gamma.<\/p>\n\n

Tia ph\u1ea3n l\u1ef1c t\u0103ng c\u01b0\u1eddng Doppler: Ng\u1ecdn h\u1ea3i \u0111\u0103ng v\u0169 tr\u1ee5<\/h2>\n\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u nhanh ch\u00f3ng ph\u00e1t hi\u1ec7n ra r\u1eb1ng tia ph\u1ea3n l\u1ef1c c\u1ee7a h\u1ed1 \u0111en \u0111\u01b0\u1ee3c h\u01b0\u1edbng th\u1eb3ng v\u1ec1 Tr\u00e1i \u0111\u1ea5t, d\u1eabn \u0111\u1ebfn hi\u1ec7u \u1ee9ng “t\u0103ng c\u01b0\u1eddng Doppler”. Hi\u1ec7u \u1ee9ng n\u00e0y khi\u1ebfn tia ph\u1ea3n l\u1ef1c tr\u00f4ng th\u1eadm ch\u00ed c\u00f2n s\u00e1ng h\u01a1n, cho ph\u00e9p c\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc quan s\u00e1t TDE v\u1edbi \u0111\u1ed9 chi ti\u1ebft ch\u01b0a t\u1eebng c\u00f3.<\/p>\n\n

\u00dd ngh\u0129a c\u1ee7a TDE: M\u1ed9t c\u1eeda s\u1ed5 v\u00e0o c\u00e1c h\u1ed1 \u0111en si\u00eau l\u1edbn<\/h2>\n\n

C\u00e1c s\u1ef1 ki\u1ec7n TDE c\u1ef1c k\u1ef3 hi\u1ebfm, cho \u0111\u1ebfn nay ch\u1ec9 c\u00f3 m\u1ed9t s\u1ed1 \u00edt \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n. C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1ed9c \u0111\u00e1o c\u1ee7a AT 2022cmc cung c\u1ea5p nh\u1eefng hi\u1ec3u bi\u1ebft c\u00f3 gi\u00e1 tr\u1ecb v\u1ec1 s\u1ef1 h\u00ecnh th\u00e0nh v\u00e0 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c h\u1ed1 \u0111en si\u00eau l\u1edbn.<\/p>\n\n

Khoa h\u1ecdc \u0111\u1eb1ng sau c\u1ea3nh t\u01b0\u1ee3ng<\/h2>\n\n

L\u1ef1c h\u1ea5p d\u1eabn v\u00e0 m\u00ec s\u1ee3i h\u00f3a<\/h2>\n\n

L\u1ef1c h\u1ea5p d\u1eabn c\u1ee7a h\u1ed1 \u0111en r\u1ea5t m\u1ea1nh \u0111\u1ebfn m\u1ee9c ch\u00fang c\u00f3 th\u1ec3 b\u00f3p m\u00e9o v\u00e0 k\u00e9o gi\u00e3n c\u00e1c ng\u00f4i sao \u0111\u1ebfn m\u1ee9c kh\u00f4ng th\u1ec3 nh\u1eadn ra. Qu\u00e1 tr\u00ecnh n\u00e0y, \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u00ec s\u1ee3i h\u00f3a, t\u1ea1o ra c\u00e1c d\u00f2ng v\u1eadt ch\u1ea5t m\u1ecfng cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho h\u1ed1 \u0111en.<\/p>\n\n

H\u00ecnh th\u00e0nh tia ph\u1ea3n l\u1ef1c v\u00e0 t\u0103ng c\u01b0\u1eddng Doppler<\/h2>\n\n

Khi v\u1eadt ch\u1ea5t c\u1ee7a ng\u00f4i sao b\u1ecb x\u00e9 n\u00e1t r\u01a1i v\u00e0o h\u1ed1 \u0111en, n\u00f3 gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng d\u01b0\u1edbi d\u1ea1ng tia ph\u1ea3n l\u1ef1c. N\u1ebfu tia ph\u1ea3n l\u1ef1c t\u00ecnh c\u1edd h\u01b0\u1edbng v\u1ec1 ph\u00eda Tr\u00e1i \u0111\u1ea5t, hi\u1ec7u \u1ee9ng Doppler s\u1ebd khu\u1ebfch \u0111\u1ea1i \u0111\u1ed9 s\u00e1ng c\u1ee7a n\u00f3, gi\u00fap d\u1ec5 d\u00e0ng quan s\u00e1t h\u01a1n.<\/p>\n\n

Vai tr\u00f2 c\u1ee7a c\u00e1c v\u1ee5 n\u1ed5 tia gamma<\/h2>\n\n

C\u00e1c v\u1ee5 n\u1ed5 tia gamma l\u00e0 nh\u1eefng v\u1ee5 n\u1ed5 m\u1ea1nh m\u1ebd x\u1ea3y ra khi c\u00e1c ng\u00f4i sao l\u1edbn s\u1ee5p \u0111\u1ed5. M\u1eb7c d\u00f9 \u0111\u1ed9 s\u00e1ng c\u1ee7a AT 2022cmc ban \u0111\u1ea7u cho th\u1ea5y \u0111\u00e2y l\u00e0 m\u1ed9t v\u1ee5 n\u1ed5 tia gamma, nh\u01b0ng c\u00e1c ph\u00e2n t\u00edch s\u00e2u h\u01a1n \u0111\u00e3 ph\u00e1t hi\u1ec7n ra m\u1ed9t ngu\u1ed3n kh\u00e1c: m\u1ed9t h\u1ed1 \u0111en si\u00eau l\u1edbn.<\/p>\n\n

T\u01b0\u01a1ng lai c\u1ee7a nghi\u00ean c\u1ee9u TDE<\/h2>\n\n

Vi\u1ec7c ph\u00e1t hi\u1ec7n ra AT 2022cmc \u0111\u00e3 m\u1edf ra nh\u1eefng h\u01b0\u1edbng nghi\u00ean c\u1ee9u m\u1edbi v\u1ec1 TDE v\u00e0 c\u00e1c h\u1ed1 \u0111en si\u00eau l\u1edbn. C\u00e1c nh\u00e0 thi\u00ean v\u0103n h\u1ecdc hi\u1ec7n \u0111ang s\u1eed d\u1ee5ng s\u1ef1 ki\u1ec7n n\u00e0y l\u00e0m m\u00f4 h\u00ecnh \u0111\u1ec3 t\u00ecm ki\u1ebfm v\u00e0 m\u00f4 t\u1ea3 c\u00e1c TDE kh\u00e1c, qua \u0111\u00f3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng v\u0169 tr\u1ee5 n\u00e0y.<\/p>","protected":false},"excerpt":{"rendered":"

S\u1ef1 ki\u1ec7n ph\u00e1 v\u1ee1 th\u1ee7y tri\u1ec1u: M\u1ed9t c\u1ea3nh t\u01b0\u1ee3ng v\u0169 tr\u1ee5 S\u1ef1 ki\u1ec7n: B\u1eefa ti\u1ec7c thi\u00ean h\u00e0 c\u1ee7a h\u1ed1 \u0111en V\u00e0o ng\u00e0y 11 th\u00e1ng 2 n\u0103m 2022, m\u1ed9t s\u1ef1 ki\u1ec7n…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[958],"tags":[1856,434,1441,1855,436],"class_list":["post-775","post","type-post","status-publish","format-standard","hentry","category-astrophysics","tag-supermassive-black-holes","tag-space-exploration","tag-black-holes","tag-tidal-disruption-events","tag-astrophysics"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/775","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=775"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/775\/revisions"}],"predecessor-version":[{"id":776,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/posts\/775\/revisions\/776"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/media?parent=775"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/categories?post=775"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/vi\/wp-json\/wp\/v2\/tags?post=775"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}