Ma Mei 2023, ma hope koke iho o ka huli ʻana o LIGO (Laser Interferometer Gravitational-wave Observatory) no kāna ʻehā o ka nānā ʻana, ua ʻike ʻia he hōʻailona hawewe-kaumaha mai ka hui ʻana o kekahi mea, he hoku neutron paha, me ka lua eleele i manaoia he 2.5 a 4.5 ka nui ma mua o ko ka La.
ʻO kēia hōʻailona, i kapa ʻia ʻo GW230529, he mea hoihoi ia i ka poʻe noiʻi no ka mea e hāʻule ana ka nui o ka lua ʻeleʻele o ka moho i loko o kahi āpau i kapa ʻia ma waena o nā hōkū neutron nui loa i ʻike ʻia, ʻoi aku ka nui ma mua o ʻelua mau pūʻulu lā, a me nā puka ʻeleʻele māmā loa i ʻike ʻia, ma kahi o ʻelima ka nui o ka lā. ʻOiai ʻaʻole hiki i ka hōʻailona nalu ʻumekaumaha wale ke hōʻike i ke ʻano maoli o kēia mea, ʻo ka ʻike ʻana o nā hanana like i ka wā e hiki mai ana, ʻoi aku ka nui o nā mea i hele pū ʻia me ka ʻā ʻana o ka mālamalama, hiki ke paʻa i ke kī e pane ai i ka nīnau pehea e hiki ai i nā puka ʻeleʻele māmā.
Hōʻike ke kiʻi i ka hui ʻana a me ka hoʻohui ʻana o kahi lua ʻeleʻele haʻahaʻa (ka ʻeleʻele ʻeleʻele) me kahi hōkū neutron (ua hoʻololi ʻia e ka umekaumaha o ka lua ʻeleʻele). Hōʻike ʻia kēia kiʻi paʻa mai ka hoʻohālikelike hui ʻana i nā ʻāpana haʻahaʻa haʻahaʻa o ka hōkū neutron, mai ka 60 grams no ke kenimika cubic (uliuli ʻeleʻele) a i ka 600 kilokani no ke kenimika cubic (keʻokeʻo). Hōʻike kona ʻano i nā deformations ikaika o nā mea haʻahaʻa haʻahaʻa o ka hōkū neutron. Kiʻi Kiʻi: Ivan Markin, Tim Dietrich (University of Potsdam), Harald Paul Pfeiffer, Alessandra Buonanno (Max Planck Institute for Gravitational Physics
"ʻO ka ʻike hou loa e hōʻike ana i ka mana ʻepekema maikaʻi loa o ka ʻenehana ʻike hawewe-gravitational, ʻoi aku ka maʻalahi ma mua o ke kolu o ka nānā ʻana," wahi a Jenne Driggers (PhD '15), ʻepekema alakaʻi ʻike ma LIGO Hanford ma Wakinekona, ʻO kekahi o nā keʻena ʻelua, me LIGO Livingston ma Louisiana, i kūkulu ʻia ka LIGO Observatory.
LINK hana i ka mōʻaukala ma 2015 ma hope o ka hoʻokō ʻana i ka ʻike mua ʻana i nā nalu gravity ma ka lewa. Mai ia manawa, ua ʻike ʻo LIGO a me kāna hoa ʻike maka ma ʻEulopa, ʻo Virgo, ma kahi o 100 mergers ma waena o nā lua ʻeleʻele, kahi lima ma waena o nā hōkū neutron, a me nā hui pū ʻana ma waena o nā hōkū neutron a me nā lua ʻeleʻele. Ua hui pū ka mea ʻike Kepani ʻo KAGRA i ka ʻupena ʻumekaumaha ma 2019, a ʻo ka hui o nā ʻepekema nāna e hōʻuluʻulu pū i ka ʻikepili mai nā mea ʻike ʻekolu a ʻike ʻia ʻo LIGO–Virgo–KAGRA (LVK). Hāʻawi kālā ʻia nā hale nānā LIGO e ka National Science Foundation (NSF), a ua hāpai ʻia, kūkulu ʻia, a hoʻokele ʻia e Caltech a me MIT.
Hōʻike pū ka ʻike hou loa e ʻoi aku ka maʻamau o nā hui ʻana e pili ana i nā lua ʻeleʻele māmā ma mua o ka mea i manaʻo ʻia ma mua.
"ʻO kēia ʻike, ʻo ka mua o kā mākou hopena hoihoi mai ka hā o ka nānā ʻana i ka holo ʻana o LIGO–Virgo–KAGRA, e hōʻike ana he ʻoi aku ka nui o nā hui like ma waena o nā hōkū neutron a me nā lua ʻeleʻele haʻahaʻa haʻahaʻa ma mua o kā mākou i manaʻo ai ma mua," wahi a Jess McIver, he kaukaʻi kōkua ma ke Kulanui o British Columbia, hope waha ʻōlelo o ka LIGO Scientific Collaboration, a he hoa postdoctoral mua ma Caltech.
Ma mua o ka hanana GW230529, ua ʻike ʻia kekahi mea hoʻohiwahiwa nui ʻē aʻe. I kēlā hanana, i hana ʻia ma ʻAukake 2019 a ʻike ʻia ʻo GW190814, kahi Ua ʻike ʻia kahi mea paʻa o 2.6 ka nui o ka lā ma ke ʻano o ka hui ʻana o ka honua, akā ʻaʻole maopopo ka poʻe ʻepekema inā he hōkū neutron a i ʻole ʻeleʻele.
Ma hope o ka hoʻomaha ʻana no ka mālama ʻana a me ka hoʻomaikaʻi ʻana, e hoʻomaka hou ka holo ʻike ʻehā o nā mea ʻike ma ʻApelila 10, 2024, a e hoʻomau ʻia a hiki i Pepeluali 2025.
Kākau ʻia e Whitney Clavin
Source: Kāula
