{"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\/cs\/cannibal_star_eats_companion\/","title":{"rendered":"Hv\u011bzda filmu \u201eKanibal\u201c se\u017eere sv\u00e9ho spole\u010dn\u00edka"},"content":{"rendered":"<div class=\"lede\">\n<p>Vesm\u00edrn\u00e1 observato\u0159 Integral agentury ESA poprv\u00e9 objevila rychle rotuj\u00edc\u00ed hv\u011bzdu, kter\u00e1 pohlcuje svou men\u0161\u00ed sousedku.<\/p>\n<\/div>\n<p>Hv\u011bzda, kter\u00e1 se ot\u00e1\u010d\u00ed, nen\u00ed \u017e\u00e1dn\u00e1 oby\u010dejn\u00e1 hv\u011bzda. P\u016fvodn\u011b m\u011bla nejm\u00e9n\u011b osmkr\u00e1t v\u011bt\u0161\u00ed hmotnost ne\u017e Slunce, ale nakonec se zhroutila do superhust\u00e9 neutronov\u00e9 hv\u011bzdy o pr\u016fm\u011bru pouh\u00fdch 20 km. Jedna \u010dajov\u00e1 l\u017ei\u010dka jej\u00ed hmoty by v\u00e1\u017eila asi miliardu tun.<\/p>\n<p>A\u010dkoli je neutronov\u00e1 hv\u011bzda p\u0159\u00edli\u0161 mal\u00e1 na to, aby ji bylo mo\u017en\u00e9 pozorovat b\u011b\u017en\u00fdm dalekohledem, lze ji vid\u011bt v rentgenov\u00e9m z\u00e1\u0159en\u00ed. Objevil ji satelit Integral b\u011bhem rutinn\u00edho sn\u00edmkov\u00e1n\u00ed oblohy dne 2. prosince 2004, kdy n\u00e1hle vyza\u0159ovala siln\u00fd rentgenov\u00fd z\u00e1blesk.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"NASA\/Dana Berry\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/08\/Animation_of_a_pulsar_eating_material_from_companion_star2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2005\/08\/animation_of_a_pulsar_eating_material_from_companion_star2\/17903491-2-eng-GB\/Animation_of_a_pulsar_eating_material_from_companion_star.jpg\" alt=\"Animation of a pulsar &#x27;eating&#x27; material from companion star\"><figcaption>Animace pulsaru, kter\u00fd 'pohlcuje' hmotu z doprovodn\u00e9 hv\u011bzdy<\/figcaption><\/figure>\n<p>M\u011b\u0159en\u00ed proveden\u00e1 dru\u017eic\u00ed Integral a sondou Rossi X-ray Timing Explorer agentury NASA ukazuj\u00ed, \u017ee tato \u2018kanibalsk\u00e1\u2019 hv\u011bzda je \u201epulsar\u201c \u2013 rychle rotuj\u00edc\u00ed neutronov\u00e1 hv\u011bzda. Ve skute\u010dnosti se jedn\u00e1 o jeden z nejrychleji rotuj\u00edc\u00edch pulsar\u016f, jak\u00e9 kdy byly objeveny. V sou\u010dasn\u00e9 dob\u011b se ot\u00e1\u010d\u00ed z\u00e1vratnou rychlost\u00ed \u2013 asi 600kr\u00e1t za sekundu \u2013 a postupn\u011b se jej\u00ed rychlost je\u0161t\u011b zvy\u0161uje.<\/p>\n<p>K procesu zrychlov\u00e1n\u00ed doch\u00e1z\u00ed, kdy\u017e plyn vytr\u017een\u00fd z doprovodn\u00e9ho t\u011blesa nar\u00e1\u017e\u00ed na povrch. Tento bou\u0159liv\u00fd p\u0159\u00edliv ho zah\u0159\u00edv\u00e1 na teplotu t\u00e9m\u011b\u0159 miliardy stup\u0148\u016f, p\u0159i\u010dem\u017e se uvol\u0148uj\u00ed obrovsk\u00e1 mno\u017estv\u00ed rentgenov\u00e9ho a gama z\u00e1\u0159en\u00ed.<\/p>\n<p>Mezit\u00edm se doprovodn\u00e1 hv\u011bzda ji\u017e zmen\u0161ila na zlomek velikosti na\u0161eho Slunce, mo\u017en\u00e1 a\u017e na 40 hmotnost\u00ed Jupitera. Ob\u011b hv\u011bzdy jsou si tak bl\u00edzko, \u017ee by se ve\u0161ly do polom\u011bru Slunce. Aby p\u0159e\u017eila, ob\u00edh\u00e1 zmen\u0161uj\u00edc\u00ed se hv\u011bzda kolem sv\u00e9 sousedn\u00ed neutronov\u00e9 hv\u011bzdy za pouh\u00fdch 2,5 hodiny.<\/p>","protected":false},"excerpt":{"rendered":"<p>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 [&hellip;]<\/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\/cs\/wp-json\/wp\/v2\/posts\/971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/comments?post=971"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/971\/revisions"}],"predecessor-version":[{"id":4764,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/971\/revisions\/4764"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=971"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=971"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=971"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=971"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=971"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=971"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=971"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}