Rentgenov\u00e1 mise NASA IXPE (Imaging X-ray Polarimetry Explorer), kter\u00e1 byla vypu\u0161t\u011bna v prosinci minul\u00e9ho roku a kter\u00e1 umo\u017e\u0148uje v\u011bdc\u016fm zkoumat rentgenov\u00e9 z\u00e1\u0159en\u00ed v\u010detn\u011b jeho polarizace, se poprv\u00e9 zam\u011b\u0159\u00ed na stel\u00e1rn\u00ed \u010dernou d\u00edru. Nen\u00ed p\u0159ekvapen\u00edm, \u017ee prvn\u00ed zkoumanou \u010dernou d\u00edrou bude pr\u00e1v\u011b ta prvn\u011b objeven\u00e1 – \u010dern\u00e1 d\u00edra v souhv\u011bzd\u00ed Labut\u011b s ozna\u010den\u00edm Cyg X-1. Od nov\u00fdch m\u011b\u0159en\u00ed si v\u011bdci slibuj\u00ed nov\u00e9 poznatky o tom, kde p\u0159esn\u011b vznik\u00e1 pozorovan\u00e9 rentgenov\u00e9 z\u00e1\u0159en\u00ed. Na p\u0159\u00edprav\u011b pozorov\u00e1n\u00ed se pod\u00edlel mezin\u00e1rodn\u00ed v\u011bdeck\u00fd t\u00fdm v\u010detn\u011b n\u011bkolika v\u00fdzkumn\u00edk\u016f z Astronomick\u00e9ho \u00fastavu AV \u010cR. Ti tak\u00e9 budou cel\u00fd syst\u00e9m pozorovat i pomoc\u00ed echelle spektrografu instalovan\u00e9ho v ohnisku dvoumetrov\u00e9ho Perkova dalekohledu v Ond\u0159ejov\u011b, kter\u00fd m\u00e1 od roku 2019 novou optickou konfiguraci a mnohem lep\u0161\u00ed \u00fa\u010dinnost.
Pomoc\u00ed nejv\u011bt\u0161\u00edho \u010desk\u00e9ho dalekohledu budou v\u011bdci zkoumat p\u0159etok hmoty z modr\u00e9ho obra sm\u011brem k \u010dern\u00e9 d\u00ed\u0159e a budou zkoumat souvislosti s nam\u011b\u0159en\u00fdm rentgenov\u00fdm z\u00e1\u0159en\u00edm, kter\u00e9 vyza\u0159uje hmota v t\u011bsn\u00e9 bl\u00edzkosti \u010dern\u00e9 d\u00edry. Pozorovac\u00ed kampa\u0148, kter\u00e1 prob\u00edh\u00e1 od 15. kv\u011btna, zabere cel\u00fd t\u00fdden, co\u017e je p\u0159ibli\u017en\u011b doba, za jakou \u010dern\u00e1 d\u00edra i modr\u00fd obr dokon\u010d\u00ed ob\u011bh kolem spole\u010dn\u00e9ho t\u011b\u017ei\u0161t\u011b. Tato doba je tak\u00e9 pot\u0159ebn\u00e1 k z\u00edsk\u00e1n\u00ed pot\u0159ebn\u00e9 citlivosti pro nam\u011b\u0159en\u00ed rentgenov\u00e9 polarizace, kter\u00e1 se odhaduje jen na n\u011bkolik m\u00e1lo procent v z\u00e1vislosti na tom, jak a kde p\u0159esn\u011b se rentgenov\u00e9 z\u00e1\u0159en\u00ed rozptyluje a odr\u00e1\u017e\u00ed. Nov\u00e1 m\u011b\u0159en\u00ed by n\u00e1m m\u011bla pomoci l\u00e9pe pochopit fyzik\u00e1ln\u00ed procesy v podm\u00ednk\u00e1ch siln\u00e9 p\u0159ita\u017elivosti \u010dern\u00e9 d\u00edry, kter\u00e1 je 20x t\u011b\u017e\u0161\u00ed ne\u017e Slunce, ale svou velikost\u00ed je srovnateln\u00e1 s Prahou. <\/p><\/p>\n\n\n\n
Dal\u0161\u00ed informace: <\/strong><\/p>\n\n\n\n \u010cesk\u00fd v\u011bdeck\u00fd t\u00fdm tvo\u0159\u00ed:<\/strong> Michal Dov\u010diak, Ji\u0159\u00ed Svoboda, Petr Hadrava, Mauricio Cabezas, Brankica Kub\u00e1tov\u00e1, Olga Maryeva, Miroslav \u0160lechta, Jakub Podgorn\u00fd, Barbora Adamcov\u00e1<\/p>\n\n\n\n <\/p>\n","protected":false},"excerpt":{"rendered":" Rentgenov\u00e1 mise NASA IXPE (Imaging X-ray Polarimetry Explorer), kter\u00e1 byla vypu\u0161t\u011bna v prosinci minul\u00e9ho roku a kter\u00e1 umo\u017e\u0148uje v\u011bdc\u016fm zkoumat rentgenov\u00e9 z\u00e1\u0159en\u00ed v\u010detn\u011b jeho polarizace, se poprv\u00e9<\/p>\n","protected":false},"author":1,"featured_media":2243,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[32,36],"tags":[],"class_list":["post-2242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-novinky","category-oddeleni"],"_links":{"self":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2242","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/comments?post=2242"}],"version-history":[{"count":6,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2242\/revisions"}],"predecessor-version":[{"id":2249,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/posts\/2242\/revisions\/2249"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media\/2243"}],"wp:attachment":[{"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/media?parent=2242"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/categories?post=2242"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/stel.asu.cas.cz\/cs\/wp-json\/wp\/v2\/tags?post=2242"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}