{"id":69347,"date":"2026-11-09T20:04:04","date_gmt":"2026-11-09T20:04:04","guid":{"rendered":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/09\/ieskodami-ateiviu-signalu-pauksciu-take-mokslininkai-aptiko-mislinga-pulsaro-kandidata\/"},"modified":"2026-11-09T20:04:04","modified_gmt":"2026-11-09T20:04:04","slug":"ieskodami-ateiviu-signalu-pauksciu-take-mokslininkai-aptiko-mislinga-pulsaro-kandidata","status":"publish","type":"post","link":"https:\/\/cp.snarskis.lt\/index.php\/2026\/11\/09\/ieskodami-ateiviu-signalu-pauksciu-take-mokslininkai-aptiko-mislinga-pulsaro-kandidata\/","title":{"rendered":"Ie\u0161kodami ateivi\u0173 signal\u0173 Pauk\u0161\u010di\u0173 Take mokslininkai aptiko m\u012fsling\u0105 pulsaro kandidat\u0105"},"content":{"rendered":"

Programa \u201eBreakthrough Listen\u201c, skirta ie\u0161koti protingos gyvyb\u0117s \u017eenkl\u0173 u\u017e \u017dem\u0117s rib\u0173, \u0161\u012fkart u\u017efiksavo visai kitok\u012f, bet ne ma\u017eiau intriguojant\u012f signal\u0105. Analizuodami radijo steb\u0117jim\u0173 duomenis astronomai aptiko galim\u0105 pulsar\u0105 \u2013 itin greitai besisukan\u010di\u0105 \u201enegyv\u0105\u201c \u017evaig\u017ed\u0119 \u2013 netoli Pauk\u0161\u010di\u0173 Tako centro.<\/p>\n

Signalas pasirod\u0117 tik vien\u0105 kart\u0105 ir pulsavo steb\u0117tinai pastoviu ritmu: kas 8,19 milisekund\u0117s, tai yra apie 122 kartus per sekund\u0119. Ta\u010diau v\u0117lesniuose steb\u0117jimuose to paties signalo aptikti nepavyko, tod\u0117l kol kas jis laikomas nepatvirtintu kandidatiniu radiniu.<\/p>\n

Kaip ra\u0161oma \u201eThe Astrophysical Journal\u201c publikuotame tyrime, signalas i\u0161ry\u0161k\u0117jo per\u017ei\u016brint daugiau nei 20 valand\u0173 duomen\u0173, surinkt\u0173 2021\u20132023 metais. I\u0161 5 282 kandidat\u0173 vienas atrod\u0117 i\u0161skirtinis \u2013 tyr\u0117jai j\u012f pramin\u0117 BLPSR (angl. \u201eBreakthrough Listen Pulsar\u201c).<\/p>\n

Tokio tipo objektai \u2013 milisekundiniai pulsarai \u2013 yra neutronin\u0117s \u017evaig\u017ed\u0117s, kuri\u0173 mas\u0117 didesn\u0117 nei Saul\u0117s, bet suspausta \u012f ma\u017edaug miesto dyd\u017eio k\u016bn\u0105. Kai kurios j\u0173 \u012fsisuka iki \u012fsp\u016bding\u0173 grei\u010di\u0173 \u201epasiskolindamos\u201c med\u017eiagos i\u0161 kaimynin\u0117s \u017evaig\u017ed\u0117s, ta\u010diau vienkartinis aptikimas kelia klausim\u0173: tai gali b\u016bti ir triuk\u0161mo svyravimas ar techninis trikdis.<\/p>\n

Signalo paie\u0161kos vyko \u201eSETI\u201c duomenyse<\/h2>\n

Kandidat\u0105 pavyko aptikti per\u017ei\u016brint radijo teleskopo \u201eGreen Bank\u201c (Vakar\u0173 Vird\u017einija, JAV) steb\u0117jimus, rinktus vykdant \u201eBreakthrough Listen\u201c projekt\u0105. Nors programa pirmiausia orientuota \u012f galim\u0173 technologini\u0173 ne\u017eemi\u0161kos kilm\u0117s signal\u0173 paie\u0161k\u0105, \u0161\u012fkart tyr\u0117jai tikslingai ie\u0161kojo pulsar\u0173.<\/p>\n

Vienas i\u0161 svarbiausi\u0173 niuans\u0173 \u2013 signalas u\u017efiksuotas tik ma\u017edaug vienos valandos duomen\u0173 atkarpoje ir v\u0117liau nebeatsikartojo. Dalis statistini\u0173 patikr\u0173 rod\u0117, kad kandidatas gali b\u016bti realus, ta\u010diau kitos nebuvo pakankamai \u012ftikinamos, tod\u0117l galutin\u0117s i\u0161vados kol kas nedaromos.<\/p>\n

Kod\u0117l Pauk\u0161\u010di\u0173 Tako centr\u0105 tirti taip sud\u0117tinga<\/h2>\n

Astronomai tikisi, kad Pauk\u0161\u010di\u0173 Tako centrin\u0117je dalyje tur\u0117t\u0173 b\u016bti nema\u017eai neutronini\u0173 \u017evaig\u017ed\u017ei\u0173, ta\u010diau realiai aptikt\u0173 pulsar\u0173 ten \u2013 labai ma\u017eai. \u0160is neatitikimas kartais vadinamas \u201etr\u016bkstam\u0173 pulsar\u0173 problema\u201c.<\/p>\n

Viena galim\u0173 prie\u017eas\u010di\u0173 \u2013 mil\u017eini\u0161ki jonizuot\u0173 duj\u0173 kiekiai tarp \u017dem\u0117s ir galaktikos centro. Per \u0161i\u0105 \u201eaudring\u0105\u201c terp\u0119 sklindan\u010dios radijo bangos i\u0161sisklaido: impulsai i\u0161sitampo ir j\u0173 ritm\u0105 tampa sunku atskirti, net jei \u0161altinis i\u0161 ties\u0173 egzistuoja.<\/p>\n

Siekiant suma\u017einti \u0161\u012f efekt\u0105, steb\u0117jimai buvo atliekami palyginti auk\u0161tais radijo da\u017eniais \u2013 8\u201312 gigaherc\u0173 intervale, kuriame sklaida ma\u017eesn\u0117. Tyr\u0117jai i\u0161 viso skyr\u0117 11 valand\u0173 steb\u0117jim\u0173 pa\u010diam vidiniam galaktikos centro regionui, ta\u010diau, nepaisant jautraus tyrimo, rado tik vien\u0105 intriguojant\u012f, bet nepatvirtint\u0105 kandidat\u0105.<\/p>\n

Pasak autori\u0173, ir toks rezultatas moksli\u0161kai svarbus: jis leid\u017eia manyti, kad pulsarus galaktikos centre aptikti gali b\u016bti sunkiau, nei rodo modeliai. Tai gali reik\u0161ti, jog signalo sklaida ten stipresn\u0117, arba kad sud\u0117tinga aplinka ir orbitos apsunkina patikim\u0105 registracij\u0105.<\/p>\n

Kas bus daroma toliau<\/h2>\n

Pulsaro kandidatas dar nerei\u0161kia patvirtinto atradimo \u2013 tam reik\u0117s pakartotini\u0173 steb\u0117jim\u0173, geriausia keliais skirtingais instrumentais ir per kelias sesijas. Astronomams svarbu \u012fsitikinti, kad periodinis signalas yra realus, stabilus ir atitinka besisukan\u010dios neutronin\u0117s \u017evaig\u017ed\u0117s po\u017eymius, o ne instrumentin\u012f artefakt\u0105 ar atsitiktin\u012f triuk\u0161m\u0105.<\/p>\n

Jei pulsaras b\u016bt\u0173 patvirtintas, jis papildyt\u0173 labai nedidel\u012f \u017einom\u0173 pulsar\u0173 prie Pauk\u0161\u010di\u0173 Tako centro s\u0105ra\u0161\u0105. Tokie objektai mokslininkams ypa\u010d vertingi, nes padeda tirti gravitacin\u0119 aplink\u0105 \u0161alia Sagittarius A* \u2013 supermasyvios juodosios skyl\u0117s Pauk\u0161\u010di\u0173 Tako centre \u2013 ir tikrinti bendrosios reliatyvumo teorijos prognozes ekstremaliomis s\u0105lygomis.<\/p>\n

Kol kas vienas ai\u0161ku: net kai ie\u0161koma vieno tipo rei\u0161kinio, dideli jautr\u016bs radijo steb\u0117jim\u0173 archyvai gali atne\u0161ti netik\u0117t\u0173 radini\u0173. \u0160iuo atveju ateivi\u0173 paie\u0161kai skirti duomenys galb\u016bt atv\u0117r\u0117 keli\u0105 dar vienai u\u017euominai apie tai, kas slepiasi sud\u0117tingiausiame Pauk\u0161\u010di\u0173 Tako regione.<\/p>\n","protected":false},"excerpt":{"rendered":"

Ateivi\u0173 signal\u0173 paie\u0161kos duomenyse astronomai aptiko galim\u0105 milisekundin\u012f pulsar\u0105 prie Pauk\u0161\u010di\u0173 Tako centro, bet signalas u\u017efiksuotas tik kart\u0105.<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[54694,54692,54695,46887,5884,54693,36922],"miestas":[],"class_list":["post-69347","post","type-post","status-publish","format-standard","hentry","category-mokslas","tag-breakthrough-listen","tag-galaktikos-centras","tag-green-bank-telescope","tag-neutronines-zvaigzdes","tag-pauksciu-takas","tag-pulsarai","tag-sagittarius-a"],"acf":[],"_links":{"self":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/69347","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/comments?post=69347"}],"version-history":[{"count":0,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/posts\/69347\/revisions"}],"wp:attachment":[{"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/media?parent=69347"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/categories?post=69347"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/tags?post=69347"},{"taxonomy":"miestas","embeddable":true,"href":"https:\/\/cp.snarskis.lt\/index.php\/wp-json\/wp\/v2\/miestas?post=69347"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}