{"id":971,"date":"2005-09-09T08:18:00","date_gmt":"2005-09-09T06:18:00","guid":{"rendered":"https:\/\/kids.esa.int\/cannibal_star_eats_companion\/"},"modified":"2026-10-08T00:34:22","modified_gmt":"2026-10-07T22:34:22","slug":"cannibal_star_eats_companion","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sl\/cannibal_star_eats_companion\/","title":{"rendered":"Zvezda filma \u00bbKanibal\u00ab poje svojega spremljevalca"},"content":{"rendered":"
\n

Vesoljski observatorij Integral agencije ESA je prvi\u010d odkril hitro vrte\u010do se zvezdo, ki pogoltava svojo manj\u0161o sosedo.<\/p>\n<\/div>\n

Zvezda, ki se vrti, ni navadna zvezda. Njena prvotna masa je bila vsaj osemkrat ve\u010dja od Son\u010deve, nato pa se je skr\u010dila v izjemno gosto nevtronsko zvezdo s premerom le 20 km. Ena \u010dajna \u017eli\u010dka njene snovi bi tehtala pribli\u017eno milijardo ton.<\/p>\n

\u010ceprav je nevtronska zvezda premajhna, da bi jo bilo mogo\u010de opaziti z obi\u010dajnim teleskopom, jo je mogo\u010de videti v rentgenskem sevanju. Odkril jo je satelit Integral med rutinskim pregledovanjem neba 2. decembra 2004, ko je nenadoma oddala mo\u010dan rentgenski izbruh.<\/p>\n

\"Animation
Animacija pulzarja, ki 'po\u017eira' snov iz spremljevalne zvezde<\/figcaption><\/figure>\n

Meritve, ki sta jih opravila Integral in vesoljsko plovilo Rossi X-ray Timing Explorer agencije NASA, ka\u017eejo, da je ta \u2018kanibalska zvezda\u2019 \u00bbpulsar\u00ab \u2013 hitro vrte\u010da se nevtronska zvezda. Dejansko gre za enega najhitreje vrte\u010dih se pulsarjev, kar so jih kdaj odkrili. Trenutno se vrti z vrtoglavo hitrostjo \u2013 pribli\u017eno 600-krat na sekundo \u2013 in postopoma \u0161e pospe\u0161uje.<\/p>\n

Proces pospe\u0161evanja nastane, ko plin, iztrgan iz spremljevalca, tr\u010di ob povr\u0161ino. Ta divji pretok plina ga segreje na temperaturo skoraj milijarde stopinj, pri \u010demer se spro\u0161\u010dajo ogromne koli\u010dine rentgenskih in gama \u017earkov.<\/p>\n

Medtem se je spremljevalka \u017ee skr\u010dila na le del\u010dek velikosti na\u0161ega Sonca, morda celo na le 40 Jupiterjevih mas. Obe zvezdi sta tako blizu, da bi se lahko vklju\u010dili v polmer Sonca. Da bi pre\u017eivela, se skr\u010dujo\u010da soseda v zgolj 2,5 urah vrti okoli svoje sosedne nevtronske zvezde.<\/p>","protected":false},"excerpt":{"rendered":"

ESA\u2019s Integral space observatory has made its first discovery of a fast-spinning star that is swallowing its smaller neighbour. The star in a spin is no ordinary star. Originally at […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2005\/08\/artist_s_impression_of_a_pulsar_eating_a_companion_star2\/17883880-2-eng-GB\/Artist_s_impression_of_a_pulsar_eating_a_companion_star.jpg","esa_banner_description":"Artist's impression of a pulsar 'eating' a companion star","esa_banner_credit":"NASA\/Dana Berry","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/08\/Artist_s_impression_of_a_pulsar_eating_a_companion_star2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-971","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/comments?post=971"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/971\/revisions"}],"predecessor-version":[{"id":4764,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/posts\/971\/revisions\/4764"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/media?parent=971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/categories?post=971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/tags?post=971"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/panel?post=971"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/language?post=971"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/age?post=971"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/duration?post=971"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/resource_type?post=971"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/audience?post=971"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sl\/wp-json\/wp\/v2\/wf_post_folders?post=971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}