{"id":1177,"date":"2020-11-29T20:16:25","date_gmt":"2020-11-29T13:16:25","guid":{"rendered":"http:\/\/weathervn.com\/?p=1177"},"modified":"2020-11-29T20:16:25","modified_gmt":"2020-11-29T13:16:25","slug":"nhip-tim-cua-trai-dat-am-thanh-bi-an-duoc-tao-ra-sau-moi-26-giay","status":"publish","type":"post","link":"https:\/\/vietweather.com\/index.php\/nhip-tim-cua-trai-dat-am-thanh-bi-an-duoc-tao-ra-sau-moi-26-giay\/","title":{"rendered":"Nh\u1ecbp tim c\u1ee7a Tr\u00e1i \u0110\u1ea5t – \u00c2m thanh b\u00ed \u1ea9n \u0111\u01b0\u1ee3c t\u1ea1o ra sau m\u1ed7i 26 gi\u00e2y"},"content":{"rendered":"

Nh\u1ecbp tim c\u1ee7a Tr\u00e1i \u0110\u1ea5t – \u00c2m thanh b\u00ed \u1ea9n \u0111\u01b0\u1ee3c t\u1ea1o ra sau m\u1ed7i 26 gi\u00e2y (genk.vn)<\/a><\/p>\n

Nh\u1ecbp tim c\u1ee7a Tr\u00e1i \u0110\u1ea5t l\u00e0 t\u00ean c\u1ee7a m\u1ed9t \u00e2m thanh c\u1ee9 26 gi\u00e2y s\u1ebd xu\u1ea5t hi\u1ec7n m\u1ed9t l\u1ea7n, nh\u01b0ng cho t\u1edbi nay v\u1eabn ch\u01b0a c\u00f3 l\u1eddi gi\u1ea3i th\u00edch ch\u00ednh x\u00e1c n\u00e0o cho \u00e2m thanh \u0111\u00f3.<\/h2>\n

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K\u1ec3 t\u1eeb nh\u1eefng n\u0103m 1960, c\u00e1c nh\u00e0 \u0111\u1ecba ch\u1ea5n h\u1ecdc tr\u00ean nhi\u1ec1u l\u1ee5c \u0111\u1ecba \u0111\u00e3 ph\u00e1t hi\u1ec7n m\u1ed9t xung b\u00ed \u1ea9n \u0111\u01b0\u1ee3c t\u1ea1o ra gi\u1ed1ng nh\u01b0 \u0111\u01b0\u1ee3c h\u1eb9n gi\u1edd c\u1ee9 26 gi\u00e2y l\u1ea1i xu\u1ea5t hi\u1ec7n m\u1ed9t l\u1ea7n. Nh\u01b0ng trong 60 n\u0103m qua, kh\u00f4ng ai c\u00f3 th\u1ec3 t\u00ecm ra \u00e2m thanh n\u00e0y th\u1ef1c s\u1ef1 l\u00e0 g\u00ec.<\/p>\n

“Nh\u1ecbp tim c\u1ee7a Tr\u00e1i \u0111\u1ea5t” l\u1ea7n \u0111\u1ea7u ti\u00ean \u0111\u01b0\u1ee3c ghi l\u1ea1i v\u00e0o n\u0103m 1962, b\u1edfi John Oliver, m\u1ed9t nh\u00e0 nghi\u00ean c\u1ee9u t\u1ea1i \u0110\u00e0i quan s\u00e1t \u0111\u1ecba ch\u1ea5t Lamont-Doherty, \u0110\u1ea1i h\u1ecdc Columbia. \u00d4ng \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng n\u00f3 \u0111\u1ebfn t\u1eeb m\u1ed9t n\u01a1i n\u00e0o \u0111\u00f3 \u1edf ph\u00eda nam ho\u1eb7c x\u00edch \u0111\u1ea1o \u0110\u1ea1i T\u00e2y D\u01b0\u01a1ng, v\u00e0 \u00e2m thanh n\u00e0y xu\u1ea5t hi\u1ec7n d\u1eef d\u1ed9i h\u01a1n trong nh\u1eefng th\u00e1ng m\u00f9a h\u00e8 \u1edf B\u1eafc b\u00e1n c\u1ea7u.<\/p>\n

Sau \u0111\u00f3, v\u00e0o n\u0103m 1980, Gary Holcomb, m\u1ed9t nh\u00e0 \u0111\u1ecba ch\u1ea5t c\u1ee7a C\u1ee5c Kh\u1ea3o s\u00e1t \u0110\u1ecba ch\u1ea5t Hoa K\u1ef3, c\u0169ng ph\u00e1t hi\u1ec7n ra xung b\u00ed \u1ea9n n\u00e0y v\u00e0 l\u01b0u \u00fd r\u1eb1ng n\u00f3 m\u1ea1nh h\u01a1n khi c\u00f3 b\u00e3o. Nh\u01b0ng v\u00ec l\u00fd do n\u00e0o \u0111\u00f3, kh\u00e1m ph\u00e1 c\u1ee7a hai nh\u00e0 nghi\u00ean c\u1ee9u n\u00e0y h\u1ea7u nh\u01b0 kh\u00f4ng \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn trong h\u01a1n hai th\u1eadp k\u1ef7, cho \u0111\u1ebfn khi m\u1ed9t sinh vi\u00ean t\u1ed1t nghi\u1ec7p t\u1ea1i \u0110\u1ea1i h\u1ecdc Colorado, Boulder, m\u1ed9t l\u1ea7n n\u1eefa ph\u00e1t hi\u1ec7n ra “nh\u1ecbp tim” v\u00e0 quy\u1ebft \u0111\u1ecbnh nghi\u00ean c\u1ee9u v\u1ec1 n\u00f3.<\/p>\n

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Mike Ritzwoller, m\u1ed9t nh\u00e0 \u0111\u1ecba ch\u1ea5n h\u1ecdc t\u1ea1i \u0110\u1ea1i h\u1ecdc Colorado, g\u1ea7n \u0111\u00e2y \u0111\u00e3 chia s\u1ebb v\u1edbi T\u1ea1p ch\u00ed Discover r\u1eb1ng ngay sau khi h\u1ecd quan s\u00e1t d\u1eef li\u1ec7u c\u1ee7a sinh vi\u00ean m\u1edbi t\u1ed1t nghi\u1ec7p Greg Bensen, \u00f4ng v\u00e0 nh\u00e0 nghi\u00ean c\u1ee9u Nikolai Shapiro \u0111\u00e3 bi\u1ebft c\u00f3 \u0111i\u1ec1u g\u00ec \u0111\u00f3 k\u1ef3 l\u1ea1 v\u1ec1 nh\u1ecbp \u0111\u1eadp b\u00ed \u1ea9n n\u00e0y.<\/p>\n

H\u1ecd ph\u1ea3i l\u00e0m vi\u1ec7c, ki\u1ec3m tra c\u00e1c thi\u1ebft b\u1ecb, ph\u00e2n t\u00edch d\u1eef li\u1ec7u v\u00e0 c\u00e1c v\u1ebft bi\u1ebfn \u0111\u1ed9ng t\u1eeb m\u1ecdi g\u00f3c \u0111\u1ed9 c\u00f3 th\u1ec3 v\u00e0 th\u1eadm ch\u00ed \u0111i\u1ec1u ch\u1ec9nh ngu\u1ed3n ph\u00e1t xung t\u1edbi m\u1ed9t v\u1ecb tr\u00ed \u1edf V\u1ecbnh Guinea, ngo\u00e0i kh\u01a1i b\u1edd bi\u1ec3n ph\u00eda T\u00e2y c\u1ee7a ch\u00e2u Phi.<\/p>\n

Ritzwoller v\u00e0 nh\u00f3m c\u1ee7a \u00f4ng th\u1eadm ch\u00ed \u0111\u00e3 \u0111\u00e0o s\u00e2u nghi\u00ean c\u1ee9u c\u1ee7a Oliver v\u00e0 Holcomb v\u00e0 c\u00f4ng b\u1ed1 m\u1ed9t nghi\u00ean c\u1ee9u v\u1ec1 xung b\u00ed \u1ea9n v\u00e0o n\u0103m 2006. Nh\u01b0ng h\u1ecd l\u1ea1i kh\u00f4ng th\u1ec3 gi\u1ea3i th\u00edch n\u00f3 th\u1ef1c s\u1ef1 l\u00e0 g\u00ec. M\u1ed9t gi\u1ea3 thuy\u1ebft cho r\u1eb1ng \u0111\u00f3 l\u00e0 do s\u00f3ng bi\u1ec3n g\u00e2y ra, trong khi m\u1ed9t gi\u1ea3 thuy\u1ebft kh\u00e1c cho r\u1eb1ng \u0111\u00f3 l\u00e0 do ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00fai l\u1eeda trong khu v\u1ef1c, nh\u01b0ng c\u1ea3 hai \u0111\u1ec1u ch\u01b0a \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 \u0111\u00fang.<\/p>\n

L\u00fd thuy\u1ebft s\u00f3ng c\u00f3 t\u1eeb n\u0103m 2011, khi Garrett Euler, m\u1ed9t nghi\u00ean c\u1ee9u sinh t\u1ea1i \u0110\u1ea1i h\u1ecdc Washington \u1edf St. Louis, x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c ngu\u1ed3n g\u1ed1c c\u1ee7a xung t\u1eeb m\u1ed9t ph\u1ea7n c\u1ee7a V\u1ecbnh Guinea \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 Bight of Bonny, \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng khi s\u00f3ng \u0111\u00e1nh v\u00e0o l\u1ee5c \u0111\u1ecba th\u1ec1m, \u00e1p su\u1ea5t l\u00e0m bi\u1ebfn d\u1ea1ng \u0111\u1ecba ch\u1ea5n \u0111\u00e1y \u0111\u1ea1i d\u01b0\u01a1ng, g\u00e2y ra c\u00e1c xung ph\u1ea3n x\u1ea1 d\u1ea1ng s\u00f3ng.<\/p>\n

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L\u00fd thuy\u1ebft c\u1ee7a Euler c\u00f3 v\u1ebb s\u1ebd l\u00e0 l\u1eddi gi\u1ea3i th\u00edch ph\u00f9 h\u1ee3p, nh\u01b0ng kh\u00f4ng ph\u1ea3i ai c\u0169ng b\u1ecb thuy\u1ebft ph\u1ee5c b\u1edfi n\u00f3. N\u0103m 2013, Yingjie Xia, m\u1ed9t nh\u00e0 nghi\u00ean c\u1ee9u t\u1eeb Vi\u1ec7n \u0110o \u0111\u1ea1c v\u00e0 \u0110\u1ecba v\u1eadt l\u00fd \u1edf V\u0169 H\u00e1n, Trung Qu\u1ed1c, \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng ngu\u1ed3n c\u1ee7a xung 26 gi\u00e2y l\u00e0 ho\u1ea1t \u0111\u1ed9ng c\u1ee7a n\u00fai l\u1eeda.<\/p>\n

L\u00fd thuy\u1ebft c\u1ee7a \u00f4ng cho r\u1eb1ng ngu\u1ed3n g\u1ed1c c\u1ee7a t\u00edn hi\u1ec7u g\u1ea7n v\u1edbi m\u1ed9t ng\u1ecdn n\u00fai l\u1eeda tr\u00ean \u0111\u1ea3o Sao Tome v\u00e0 c\u00f3 \u00edt nh\u1ea5t m\u1ed9t \u0111\u1ecba \u0111i\u1ec3m kh\u00e1c \u1edf m\u1ed9t n\u01a1i kh\u00e1c tr\u00ean th\u1ebf gi\u1edbi c\u00f3 m\u1ed9t s\u1ed1 \u0111i\u1ec3m t\u01b0\u01a1ng \u0111\u1ed3ng v\u1edbi thuy\u1ebft n\u00e0y.<\/p>\n

Nh\u01b0ng c\u1ea3 hai l\u00fd thuy\u1ebft \u0111\u1ec1u kh\u00f4ng gi\u1ea3i th\u00edch \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 xung. T\u1ea1i sao xung 26 gi\u00e2y ch\u1ec9 x\u1ea3y ra t\u1ea1i Bight of Bonny? S\u00f3ng \u0111\u00e1nh v\u00e0o c\u00e1c b\u1edd bi\u1ec3n tr\u00ean kh\u1eafp th\u1ebf gi\u1edbi v\u00e0 c\u00f3 r\u1ea5t nhi\u1ec1u khu v\u1ef1c kh\u00e1c c\u00f3 ho\u1ea1t \u0111\u1ed9ng \u0111\u1ecba ch\u1ea5n, \u0111i\u1ec1u g\u00ec \u0111\u1eb7c bi\u1ec7t \u1edf n\u01a1i n\u00e0y? C\u00f3 v\u1ebb \u0111\u00f3 l\u00e0 nh\u1eefng c\u00e2u tr\u1ea3 l\u1eddi m\u00e0 ch\u01b0a c\u00f3 ai c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch \u0111\u01b0\u1ee3c, nh\u01b0ng tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c nh\u00e0 \u0111\u1ecba ch\u1ea5n h\u1ecdc d\u01b0\u1eddng nh\u01b0 kh\u00f4ng th\u1ef1c s\u1ef1 quan t\u00e2m \u0111\u1ebfn n\u00f3.<\/p>\n

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\u1ede m\u1ed9t g\u00f3c \u0111\u1ed9 kh\u00e1c, c\u00e1c nh\u00e0 khoa h\u1ecdc c\u0169ng ph\u00e1t hi\u1ec7n th\u1ea5y “nh\u1ecbp tim” b\u00ed \u1ea9n ph\u00e1t ra t\u1eeb m\u1ed9t \u0111\u00e1m m\u00e2y b\u1ee5i v\u0169 tr\u1ee5. B\u00ecnh th\u01b0\u1eddng, khu v\u1ef1c kh\u00f4ng gian n\u00e0y ch\u1eb3ng c\u00f3 g\u00ec \u0111\u00e1ng ch\u00fa \u00fd cho t\u1edbi khi k\u00ednh vi\u1ec5n v\u1ecdng nh\u1eadn th\u1ea5y n\u00f3 \u0111ang “h\u00f2a chung nh\u1ecbp \u0111\u1eadp” v\u1edbi m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng thi\u00ean v\u0103n g\u1ea7n \u0111\u00f3. V\u00ec l\u00fd do n\u00e0y, b\u00e1o c\u00e1o nghi\u00ean c\u1ee9u m\u1edbi k\u1ebft lu\u1eadn d\u01b0\u1eddng nh\u01b0 v\u1eadt th\u1ec3 c\u00f3 li\u00ean k\u1ebft v\u1edbi nhau. Th\u1ebf nh\u01b0ng nh\u00f3m c\u00e1c nh\u00e0 khoa h\u1ecdc ch\u01b0a r\u00f5 b\u1eb1ng c\u00e1ch n\u00e0o, nh\u1eefng “nh\u1ecbp tim” ph\u00e1t ra d\u01b0\u1edbi d\u1ea1ng tia gamma c\u1ee7a \u0111\u00e1m m\u00e2y b\u1ee5i li\u00ean k\u1ebft v\u1edbi h\u1ed1 \u0111en n\u1eb1m c\u00e1ch n\u00f3 100 n\u0103m \u00e1nh s\u00e1ng.<\/p>\n

Nh\u00f3m nghi\u00ean c\u1ee9u t\u00ecm th\u1ea5y nh\u1ecbp \u0111\u1eadp k\u1ef3 l\u1ea1 n\u00e0y khi ph\u00e2n t\u00edch l\u01b0\u1ee3ng d\u1eef li\u1ec7u thu th\u1eadp \u0111\u01b0\u1ee3c trong 10 n\u0103m ho\u1ea1t \u0111\u1ed9ng c\u1ee7a k\u00ednh thi\u00ean v\u0103n tia gamma Fermi. Trong qu\u00e3ng th\u1eddi gian \u0111\u00f3, Fermi quan s\u00e1t SS 433 – m\u1ed9t chu\u1ea9n tinh (quasar) c\u1ee1 nh\u1ecf – n\u1eb1m c\u00e1ch D\u1ea3i Ng\u00e2n h\u00e0 kho\u1ea3ng 15.000 n\u0103m \u00e1nh s\u00e1ng. SS 433 n\u00e0y ch\u1ee9a m\u1ed9t ng\u00f4i sao l\u1edbn h\u01a1n M\u1eb7t Tr\u1eddi t\u1edbi 30 l\u1ea7n c\u00f9ng v\u1edbi m\u1ed9t h\u1ed1 \u0111en c\u00f3 k\u00edch c\u1ee1 l\u1edbn – kho\u1ea3ng t\u1eeb 10 t\u1edbi 20 kh\u1ed1i l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi. H\u1ed1 \u0111en v\u00e0 ng\u00f4i sao ho\u00e0n th\u00e0nh m\u1ed9t qu\u1ef9 \u0111\u1ea1o quanh nhau m\u1ed7i 13 ng\u00e0y, v\u00e0 h\u1ed1 \u0111en li\u00ean t\u1ee5c h\u00fat v\u1eadt ch\u1ea5t t\u1eeb ng\u00f4i sao kh\u1ed5ng l\u1ed3.<\/p>\n

\u201cL\u01b0\u1ee3ng v\u1eadt ch\u1ea5t n\u00e0y t\u1ee5 l\u1ea1i th\u00e0nh m\u1ed9t \u0111\u0129a b\u1ed3i t\u1ee5 kh\u1ed5ng l\u1ed3 v\u00e0 chui d\u1ea7n v\u00e0o h\u1ed1 \u0111en, nh\u01b0 c\u00e1ch n\u01b0\u1edbc chui xu\u1ed1ng \u1ed1ng c\u1ed1ng v\u1eady\u201d, Jian Li, m\u1ed9t trong s\u1ed1 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u g\u00f3p c\u00f4ng vi\u1ebft b\u00e1o c\u00e1o cho bi\u1ebft. \u201cTuy nhi\u00ean, m\u1ed9t ph\u1ea7n v\u1eadt ch\u1ea5t kh\u00f4ng chui xu\u1ed1ng m\u00e0 b\u1eafn ra th\u00e0nh hai tia \u0111\u1ed1i x\u1ee9ng, t\u1eeb ph\u00eda tr\u00ean v\u00e0 ph\u00eda d\u01b0\u1edbi c\u00e1i \u0111\u0129a b\u1ed3i t\u1ee5\u201d.<\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u ph\u1ea3i ti\u1ebfp t\u1ee5c quan s\u00e1t v\u00e0 ph\u1ea3i ti\u1ebfn h\u00e0nh m\u1ed9t s\u1ed1 th\u00ed nghi\u1ec7m mang t\u00ednh gi\u1ea3 thuy\u1ebft \u0111\u1ec3 c\u00f3 th\u1ec3 hi\u1ec3u r\u00f5 \u0111\u01b0\u1ee3c “nh\u1ecbp \u0111\u1eadp” n\u00e0y.<\/p>\n

“H\u1ec7 sao S 433 ti\u1ebfp t\u1ee5c khi\u1ebfn ng\u01b0\u1eddi quan s\u00e1t v\u00e0 c\u00e1c thuy\u1ebft gia ng\u1ea1c nhi\u00ean. Ch\u1eafc h\u1eb3n n\u00f3 l\u00e0 n\u01a1i ph\u00f9 h\u1ee3p \u0111\u1ec3 d\u1ef1a v\u00e0o \u0111\u00f3, ch\u00fang t\u00f4i th\u1eed nghi\u1ec7m kh\u1ea3 n\u0103ng t\u1ea1o ra tia v\u0169 tr\u1ee5 c\u0169ng nh\u01b0 vi\u1ec7c truy\u1ec1n t\u00edn hi\u1ec7u g\u1ea7n m\u1ed9t quasar c\u1ee1 nh\u1ecf”.<\/p>\n","protected":false},"excerpt":{"rendered":"

Nh\u1ecbp tim c\u1ee7a Tr\u00e1i \u0110\u1ea5t – \u00c2m thanh b\u00ed \u1ea9n \u0111\u01b0\u1ee3c t\u1ea1o ra sau m\u1ed7i 26 gi\u00e2y (genk.vn) Nh\u1ecbp tim c\u1ee7a Tr\u00e1i \u0110\u1ea5t l\u00e0 t\u00ean c\u1ee7a m\u1ed9t \u00e2m thanh c\u1ee9 26 gi\u00e2y s\u1ebd xu\u1ea5t hi\u1ec7n m\u1ed9t l\u1ea7n, nh\u01b0ng cho t\u1edbi nay v\u1eabn ch\u01b0a c\u00f3 l\u1eddi gi\u1ea3i th\u00edch ch\u00ednh x\u00e1c n\u00e0o cho \u00e2m thanh \u0111\u00f3.   […]\n","protected":false},"author":1,"featured_media":1178,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[37,20,1,35,14],"tags":[],"_links":{"self":[{"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/posts\/1177"}],"collection":[{"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/comments?post=1177"}],"version-history":[{"count":1,"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/posts\/1177\/revisions"}],"predecessor-version":[{"id":1181,"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/posts\/1177\/revisions\/1181"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/media\/1178"}],"wp:attachment":[{"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/media?parent=1177"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/categories?post=1177"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vietweather.com\/index.php\/wp-json\/wp\/v2\/tags?post=1177"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}