Z\u00e1hada r\u00e1diov\u00e9ho sign\u00e1lu pren\u00e1\u0161an\u00e9ho na Zem ka\u017ed\u00fdch 157 dn\u00ed z hlbok\u00e9ho vesm\u00edru – a najnov\u0161\u00ed \u201eping\u201c pri\u0161iel pr\u00e1ve v\u010das! Takzvan\u00e9 Fast Radio Burst sa opakuje ka\u017ed\u00fdch 157 dn\u00ed so silou mili\u00f3nov S\u013ank a jeho najnov\u0161ia pa\u013eba dorazila minul\u00fd t\u00fd\u017ede\u0148 presne na\u010das.<\/p>\n
Akt\u00edvna f\u00e1za FRB 121102 skon\u010di\u0165 medzi 31. augustom a 9. septembrom 2020. Ak bud\u00fa \u010falekoh\u013eady pokra\u010dova\u0165 v zachyt\u00e1van\u00ed v\u00fdbuchov aj po t\u00fdchto term\u00ednoch, potom bu\u010f existuje ich predv\u00eddate\u013en\u00fd vzorec, alebo sa nejako vyvinuli. Vedci vyzvali \u010fal\u0161ie t\u00edmy, aby pokra\u010dovali v sledvan\u00ed FRB 121102 v n\u00e1deji, \u017ee ho lep\u0161ie pochopia. Na z\u00e1klade nov\u00fdch (aj star\u0161\u00edch) \u00fadajov sa vedie te\u00f3ria, pod\u013ea ktorej v\u00fdbuchy vy\u017earuje typ neutr\u00f3novej hviezdy naz\u00fdvan\u00fd magnetar. Zdroj FRB je st\u00e1le z\u00e1hadou a povaha predmetov, ktor\u00e9 ich emituj\u00fa, nie je zn\u00e1ma.<\/p>\n
Opakuj\u00face sa v\u00fdboje d\u00e1vaj\u00fa vedcom vz\u00e1cne \u0161ance \u0161tudova\u0165 p\u00f4vod FRB. FRB 121102 je jedn\u00fdm z iba dvoch FRB, o ktor\u00fdch sa vie, \u017ee sa pravidelne opakuj\u00fa, a jeho cyklus prv\u00fdkr\u00e1t pop\u00edsali britsk\u00ed vedci za\u010diatkom tohto roka. Astron\u00f3movia sledovali p\u00f4vod v oblasti tvoriacej hviezdy v trpasli\u010dej galaxii vzdialenej 3 mili\u00f3ny sveteln\u00fdch rokov. Po\u010das jeho cyklu s\u00fa 90 dn\u00ed vysielan\u00e9 n\u00e1valy sign\u00e1lov dlh\u00fdch milisek\u00fand pred pokojn\u00fdm obdob\u00edm trvaj\u00facim 67 dn\u00ed, s celkovou d\u013a\u017ekou slu\u010dky 157 dn\u00ed.<\/p>\n
Nov\u00e1 \u0161t\u00fadia o FRB teraz vrhla nov\u00e9 svetlo na jeho cyklus a mo\u017en\u00fd p\u00f4vod. T\u00edm \u010d\u00ednskeho N\u00e1rodn\u00e9ho observat\u00f3ria astron\u00f3mie 12. augusta detekoval 12 v\u00fdbuchov z FRB 121102. Vlny skenovali pomocou p\u00e4\u0165stometrov\u00e9ho sf\u00e9rick\u00e9ho r\u00e1diov\u00e9ho \u010falekoh\u013eadu (FAST) – najv\u00e4\u010d\u0161ieho \u010falekoh\u013eadu na svete – v juhoz\u00e1padnej \u010c\u00edne. Zistenia skupiny (pod\u013ea The Astronomer’s Telegram) nazna\u010duj\u00fa, \u017ee v\u00fdbuch je moment\u00e1lne v akt\u00edvnej f\u00e1ze a opakuje sa ka\u017ed\u00fdch 156 dn\u00ed – nie 157.<\/p>\n
Pod\u013ea vedcov v\u00e4\u010d\u0161ina doteraz n\u00e1jden\u00fdch sign\u00e1lov vykazuje zn\u00e1mky pr\u00edchodu z \u201esiln\u00fdch astrofyzik\u00e1lnych objektov\u201c hlboko vo vesm\u00edre. To by mohlo znamena\u0165 umieraj\u00face uhl\u00edky obrovskej hviezdy bl\u00edzko stredu \u010diernej diery alebo nie\u010do, \u010do \u013eudia nikdy predt\u00fdm nezistili. <\/p>\n
Bez oh\u013eadu na ich p\u00f4vod maj\u00fa FRB potenci\u00e1l by\u0165 nov\u00fdm n\u00e1strojom, ktor\u00fdm m\u00f4\u017eeme porozumie\u0165 \u0161trukt\u00fare hmoty vo vesm\u00edre. R\u00e1diov\u00e9 z\u00e1blesky boli objaven\u00e9 a\u017e v roku 2007, tak\u017ee mal\u00e9 p\u00e1rne kroky k pochopeniu ich zdroja poskytuj\u00fa astron\u00f3mom ve\u013ek\u00e9 vzru\u0161enie.<\/p>\n
Poch\u00e1dza z galaxie vzdialenej 3 miliardy sveteln\u00fdch rokov. Ak by ste teda mohli cestova\u0165 1 000-kr\u00e1t r\u00fdchlej\u0161ie ako svetlo, trvalo by to 3 000 000 rokov. Tak\u017ee si teraz vypo\u010ditajte, kedy tieto v\u00fdrony energii vlastnej nastali \ud83d\ude42<\/p>\n","protected":false},"excerpt":{"rendered":"
Z\u00e1hada r\u00e1diov\u00e9ho sign\u00e1lu pren\u00e1\u0161an\u00e9ho na Zem ka\u017ed\u00fdch 157 dn\u00ed z hlbok\u00e9ho vesm\u00edru – a najnov\u0161\u00ed \u201eping\u201c pri\u0161iel pr\u00e1ve v\u010das! Takzvan\u00e9 Fast Radio Burst sa opakuje ka\u017ed\u00fdch 157 dn\u00ed so silou mili\u00f3nov S\u013ank a jeho najnov\u0161ia pa\u013eba dorazila minul\u00fd t\u00fd\u017ede\u0148 presne na\u010das. Akt\u00edvna f\u00e1za FRB 121102 skon\u010di\u0165 medzi 31. augustom a 9. septembrom 2020. Ak bud\u00fa […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-3088","post","type-post","status-publish","format-standard","hentry","category-biohazard"],"_links":{"self":[{"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/posts\/3088","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/comments?post=3088"}],"version-history":[{"count":0,"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/posts\/3088\/revisions"}],"wp:attachment":[{"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/media?parent=3088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/categories?post=3088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/extraslovensko.sk\/spravy\/wp-json\/wp\/v2\/tags?post=3088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}