{"id":1716,"date":"2026-09-02T06:03:00","date_gmt":"2026-09-01T21:03:00","guid":{"rendered":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-02-fast-neutral-hydrogen-star-formation-gap-vi\/"},"modified":"2026-09-02T06:03:00","modified_gmt":"2026-09-01T21:03:00","slug":"2026-09-02-fast-neutral-hydrogen-star-formation-gap-vi","status":"publish","type":"briefing","link":"https:\/\/onepress.co.kr\/index.php\/briefing\/2026-09-02-fast-neutral-hydrogen-star-formation-gap-vi\/","title":{"rendered":"S\u1ef1 h\u00ecnh th\u00e0nh sao ch\u1ec9 c\u00f2n 40% m\u1ee9c c\u1ee7a 4,5 t\u1ef7 n\u0103m tr\u01b0\u1edbc, c\u00f2n hydro nguy\u00ean t\u1eed \u1edf m\u1ee9c 74% \u2014 kh\u00f4ng ch\u1ec9 l\u00e0 thi\u1ebfu nhi\u00ean li\u1ec7u"},"content":{"rendered":"

2026-09-02 06:03 KST<\/strong><\/p>\n

Trong m\u1ed9t nghi\u00ean c\u1ee9u k\u1ebft h\u1ee3p k\u00ednh vi\u1ec5n v\u1ecdng v\u00f4 tuy\u1ebfn FAST v\u00e0 quan s\u00e1t DESI, ng\u01b0\u1eddi ta x\u00e1c \u0111\u1ecbnh r\u1eb1ng trong 4,5 t\u1ef7 n\u0103m qua, t\u1ed1c \u0111\u1ed9 h\u00ecnh th\u00e0nh sao c\u1ee7a v\u0169 tr\u1ee5 gi\u1ea3m xu\u1ed1ng kho\u1ea3ng 41% m\u1ee9c tr\u01b0\u1edbc \u0111\u00e2y, trong khi ph\u00e9p \u0111o th\u00f4 cho th\u1ea5y hydro nguy\u00ean t\u1eed trung t\u00ednh v\u1eabn \u1edf kho\u1ea3ng 74%. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 r\u1ea5t kh\u00f3 gi\u1ea3i th\u00edch hi\u1ec7n t\u01b0\u1ee3ng c\u00f3 \u00edt ng\u00f4i sao \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh h\u01a1n ch\u1ec9 \u0111\u01a1n gi\u1ea3n l\u00e0 do c\u1ea1n ki\u1ec7t nhi\u00ean li\u1ec7u hydro nguy\u00ean t\u1eed.<\/p>\n

N\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 h\u00ecnh \u1ea3nh tr\u1ef1c ti\u1ebfp v\u1ec1 l\u01b0\u1ee3ng kh\u00ed c\u00f2n l\u1ea1i trong t\u1eebng thi\u00ean h\u00e0. C\u00e1c t\u00edn hi\u1ec7u r\u1ea5t y\u1ebfu 21 cm t\u1eeb kho\u1ea3ng 2,5 tri\u1ec7u thi\u00ean h\u00e0 \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ed1ng k\u00ea \u0111\u1ec3 \u0111o m\u1ee9c trung b\u00ecnh, v\u00e0 m\u1ee9c gi\u1ea3m hydro c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c l\u00e0m nh\u1ecf h\u01a1n b\u1eb1ng c\u00e1ch s\u1eeda l\u1ed7i h\u1ec7 th\u1ed1ng.<\/p>\n

C\u00e1i g\u00ec \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111o v\u00e0 b\u1eb1ng c\u00e1ch n\u00e0o?<\/h2>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 k\u1ebft h\u1ee3p ph\u1ed5 v\u00f4 tuy\u1ebfn 21 cm c\u1ee7a hydro nguy\u00ean t\u1eed trung t\u00ednh t\u1eeb FAST v\u1edbi d\u1eef li\u1ec7u quang ph\u1ed5 quang h\u1ecdc t\u1eeb DESI. S\u1eed d\u1ee5ng kho\u1ea3ng 2,5 tri\u1ec7u thi\u00ean h\u00e0 bao ph\u1ee7 kho\u1ea3ng 12.000 \u0111\u1ed9 vu\u00f4ng b\u1ea7u tr\u1eddi, ch\u00fang t\u00f4i \u01b0\u1edbc t\u00ednh m\u1eadt \u0111\u1ed9 hydro trung b\u00ecnh trong v\u0169 tr\u1ee5 b\u1eb1ng c\u00e1ch x\u1ebfp ch\u1ed3ng c\u00e1c t\u00edn hi\u1ec7u qu\u00e1 m\u1edd \u0111\u1ec3 c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n ri\u00eang l\u1ebb. N\u00f3 dao \u0111\u1ed9ng t\u1eeb d\u1ecbch chuy\u1ec3n \u0111\u1ecf 0 \u0111\u1ebfn 0,41, ho\u1eb7c kho\u1ea3ng 4,5 t\u1ef7 n\u0103m qua.<\/p>\n

S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa hai t\u1ef7 l\u1ec7 gi\u1ea3m gi\u00e1 l\u1edbn \u0111\u1ebfn m\u1ee9c n\u00e0o?<\/h2>\n

4,5 t\u1ef7 n\u0103m tr\u01b0\u1edbc, m\u1eadt \u0111\u1ed9 t\u1ed1c \u0111\u1ed9 h\u00ecnh th\u00e0nh sao g\u1ea5p kho\u1ea3ng 2,46 l\u1ea7n so v\u1edbi ng\u00e0y nay. M\u1eadt \u0111\u1ed9 c\u1ee7a hydro nguy\u00ean t\u1eed trung t\u00ednh trong c\u00f9ng th\u1eddi k\u1ef3 l\u00e0 1,35 \u00b1 0,10 l\u1ea7n gi\u00e1 tr\u1ecb hi\u1ec7n t\u1ea1i trong d\u1eef li\u1ec7u th\u00f4 v\u00e0 \u0111\u01b0\u1ee3c \u01b0\u1edbc t\u00ednh l\u00e0 1,12 \u00b1 0,10 l\u1ea7n sau khi s\u1eeda l\u1ed7i h\u1ec7 th\u1ed1ng b\u1ea3o th\u1ee7. S\u1ef1 gi\u1ea3m s\u1ef1 h\u00ecnh th\u00e0nh sao l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi s\u1ef1 gi\u1ea3m hydro nguy\u00ean t\u1eed.<\/p>\n

\"S\u1ef1
\u0110\u00e2y l\u00e0 h\u00ecnh \u1ea3nh t\u1ea1o b\u1eb1ng AI \u0111\u1ec3 gi\u1ea3i th\u00edch ch\u1ee7 \u0111\u1ec1, kh\u00f4ng ph\u1ea3i \u1ea3nh ch\u1ee5p s\u1ef1 ki\u1ec7n, quan s\u00e1t hay th\u00ed nghi\u1ec7m th\u1ef1c t\u1ebf.<\/figcaption><\/figure>\n

T\u1ea1i sao hydro nguy\u00ean t\u1eed kh\u00f4ng ph\u1ea3i l\u00e0 nhi\u00ean li\u1ec7u cho c\u00e1c ng\u00f4i sao?<\/h2>\n

C\u00e1c ng\u00f4i sao \u0111\u01b0\u1ee3c sinh ra ch\u1ee7 y\u1ebfu trong c\u00e1c \u0111\u00e1m m\u00e2y ph\u00e2n t\u1eed hydro d\u00e0y \u0111\u1eb7c, l\u1ea1nh l\u1ebdo. Hydro nguy\u00ean t\u1eed trung t\u00ednh l\u00e0 m\u1ed9t ngu\u1ed3n d\u1ef1 tr\u1eef quan tr\u1ecdng, nh\u01b0ng tr\u01b0\u1edbc ti\u00ean n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh hydro ph\u00e2n t\u1eed v\u00e0 c\u00e1c \u0111\u00e1m m\u00e2y s\u1ebd \u0111\u1ee7 ngu\u1ed9i v\u00e0 k\u1ebft t\u1ee5 l\u1ea1i v\u1edbi nhau. Do \u0111\u00f3, ngay c\u1ea3 khi t\u1ed5ng l\u01b0\u1ee3ng hydro nguy\u00ean t\u1eed kh\u00f4ng gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u00ec s\u1ef1 h\u00ecnh th\u00e0nh sao c\u00f3 th\u1ec3 gi\u1ea3m n\u1ebfu qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i hydro ph\u00e2n t\u1eed ho\u1eb7c hi\u1ec7u su\u1ea5t h\u00ecnh th\u00e0nh sao gi\u1ea3m.<\/p>\n

\u0110i\u1ec1u g\u00ec v\u1eabn ch\u01b0a r\u00f5 r\u00e0ng?<\/h2>\n

C\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00edn hi\u1ec7u ch\u1ed3ng ch\u00e9o t\u1ea1o ra m\u1ee9c trung b\u00ecnh ch\u00ednh x\u00e1c cho m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng r\u1ea5t l\u1edbn c\u00e1c thi\u00ean h\u00e0, nh\u01b0ng c\u00f3 th\u1ec3 che gi\u1ea5u s\u1ef1 \u0111a d\u1ea1ng c\u1ee7a t\u1eebng thi\u00ean h\u00e0. C\u00e1c l\u1ed7i h\u1ec7 th\u1ed1ng nh\u01b0 ch\u1ecdn m\u1eabu, t\u00edn hi\u1ec7u t\u1eeb c\u00e1c thi\u00ean h\u00e0 l\u00e2n c\u1eadn trong ch\u00f9m tia v\u00e0 hi\u1ec7u ch\u1ec9nh kh\u1ed1i l\u01b0\u1ee3ng hydro v\u1eabn c\u00f2n t\u1ed3n t\u1ea1i. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 \u00e1p d\u1ee5ng m\u1ed9t s\u1ed1 \u0111i\u1ec1u ch\u1ec9nh, nh\u01b0ng m\u1ee9c \u0111\u1ed9 gi\u1ea3m ch\u00ednh x\u00e1c s\u1ebd c\u1ea7n \u0111\u01b0\u1ee3c thu h\u1eb9p l\u1ea1i b\u1eb1ng c\u00e1c quan s\u00e1t ti\u1ebfp theo.<\/p>\n

Nh\u1eefng g\u00ec c\u1ea7n ki\u1ec3m tra ti\u1ebfp theo<\/h2>\n

Hydro ph\u00e2n t\u1eed v\u00e0 hydro nguy\u00ean t\u1eed ph\u1ea3i \u0111\u01b0\u1ee3c \u0111o c\u00f9ng nhau trong c\u00f9ng m\u1ed9t nh\u00f3m thi\u00ean h\u00e0 v\u00e0 ph\u1ea3i so s\u00e1nh s\u1ef1 kh\u00e1c bi\u1ec7t t\u00f9y thu\u1ed9c v\u00e0o kh\u1ed1i l\u01b0\u1ee3ng, m\u00f4i tr\u01b0\u1eddng v\u00e0 h\u00ecnh d\u1ea1ng thi\u00ean h\u00e0. C\u0169ng c\u1ea7n c\u00f3 nh\u1eefng quan s\u00e1t \u0111o tr\u1ef1c ti\u1ebfp t\u00edn hi\u1ec7u 21 cm trong th\u1eddi gian xa h\u01a1n. Thay v\u00ec x\u00e1c nh\u1eadn m\u1ed9t nguy\u00ean nh\u00e2n duy nh\u1ea5t d\u1eabn \u0111\u1ebfn s\u1ef1 suy gi\u1ea3m qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh sao, nh\u1eefng k\u1ebft qu\u1ea3 n\u00e0y \u0111\u1eb7t ra m\u1ed9t ti\u00eau chu\u1ea9n m\u1edbi lo\u1ea1i tr\u1eeb nh\u1eefng gi\u1ea3i th\u00edch \u0111\u01a1n gi\u1ea3n v\u1ec1 s\u1ef1 c\u1ea1n ki\u1ec7t nhi\u00ean li\u1ec7u.<\/p>\n

Ngu\u1ed3n g\u1ed1c v\u00e0 ki\u1ec3m ch\u1ee9ng \u0111\u1ed9c l\u1eadp<\/h2>\n

Nature Astronomy \uc6d0 \ub17c\ubb38<\/a><\/p>\n

arXiv \uc0ac\uc804\uacf5\uac1c \uc6d0\ubb38<\/a><\/p>\n

\uc911\uad6d\uacfc\ud559\uc6d0 \uacf5\uc2dd \uc5f0\uad6c \uc124\uba85<\/a><\/p>\n

\ud3ec\uce20\uba38\uc2a4\ub300 \ub3c5\ub9bd \uc5f0\uad6c \uc0c9\uc778\u00b7\ucd08\ub85d<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

FAST v\u00e0 DESI \u0111\u00e3 k\u1ebft h\u1ee3p c\u00e1c t\u00edn hi\u1ec7u hydro y\u1ebfu t\u1eeb kho\u1ea3ng 2,5 tri\u1ec7u thi\u00ean h\u00e0 v\u00e0 nh\u1eadn th\u1ea5y s\u1ef1 gi\u1ea3m \u0111\u00e1ng k\u1ec3 trong qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh sao nh\u01b0ng m\u1ee9c gi\u1ea3m nh\u1ecf h\u01a1n nhi\u1ec1u trong l\u01b0\u1ee3ng hydro nguy\u00ean t\u1eed trung t\u00ednh. Chuy\u1ec3n \u0111\u1ed5i hydro ph\u00e2n t\u1eed v\u00e0 hi\u1ec7u qu\u1ea3 h\u00ecnh th\u00e0nh sao v\u1eabn l\u00e0 nh\u1eefng \u1ee9ng c\u1eed vi\u00ean ch\u00ednh.<\/p>\n","protected":false},"featured_media":0,"template":"","meta":[],"class_list":["post-1716","briefing","type-briefing","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing\/1716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/briefing"}],"about":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/types\/briefing"}],"wp:attachment":[{"href":"https:\/\/onepress.co.kr\/index.php\/wp-json\/wp\/v2\/media?parent=1716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}