V roce 185 n. l. zaznamenali \u010d\u00edn\u0161t\u00ed astronomov\u00e9 v\u00fdskyt nov\u00e9 hv\u011bzdy v hv\u011bzdn\u00e9m obrazci Nanmen. Tato \u010d\u00e1st oblohy je na modern\u00edch hv\u011bzdn\u00fdch map\u00e1ch ztoto\u017e\u0148ov\u00e1na s \u010d\u00e1st\u00ed ji\u017en\u00ed souhv\u011bzd\u00ed Centaura. Ve skute\u010dnosti byla tato nov\u00e1 hv\u011bzda \u00fadajn\u011b viditeln\u00e1 pouh\u00fdm okem po cel\u00e9 m\u011bs\u00edce, ne\u017e zmizela z dohledu, a dnes je pova\u017eov\u00e1na za nejstar\u0161\u00ed zaznamenanou supernovu. Na tomto teleskopick\u00e9m sn\u00edmku z 21. stolet\u00ed lze na pozad\u00ed hv\u011bzdn\u00e9 oblohy rozeznat jemn\u00e9 obrysy slab\u00e9 emisn\u00ed mlhoviny, kter\u00e1 je pova\u017eov\u00e1na za poz\u016fstatek t\u00e9to historick\u00e9 hv\u011bzdn\u00e9 exploze. Nepravideln\u00fd, ale zhruba kruhov\u00fd tvar mlhoviny, katalogizovan\u00e9 jako RCW 86, p\u0159edstavuje mezihv\u011bzdn\u00fd plyn ionizovan\u00fd st\u00e1le se roz\u0161i\u0159uj\u00edc\u00ed r\u00e1zovou vlnou supernovy. Sn\u00edmky po\u0159\u00edzen\u00e9 z vesm\u00edru nazna\u010duj\u00ed hojn\u00fd v\u00fdskyt \u017eeleza v RCW 86 a nep\u0159\u00edtomnost neutronov\u00e9 hv\u011bzdy \u010di pulsaru uvnit\u0159 zbytku, co\u017e nazna\u010duje, \u017ee p\u016fvodn\u00ed supernova byla typu Ia. Na rozd\u00edl od v\u00fdbuchu supernovy typu kolapsu j\u00e1dra u hmotn\u00e9 hv\u011bzdy je supernova typu Ia termonukle\u00e1rn\u00ed v\u00fdbuch na b\u00edl\u00e9 trpasli\u010d\u00ed hv\u011bzd\u011b, kter\u00e1 akretovala hmotu od sv\u00e9ho spole\u010dn\u00edka v dvojhv\u011bzdn\u00e9m syst\u00e9mu. Tento zbytkov\u00fd objekt supernovy, kter\u00fd se nach\u00e1z\u00ed bl\u00edzko roviny na\u0161\u00ed Galaxie Ml\u00e9\u010dn\u00e9 dr\u00e1hy a na obloze je v\u011bt\u0161\u00ed ne\u017e \u00fapln\u011bk, je v\u0161ak p\u0159\u00edli\u0161 slab\u00fd na to, aby byl viditeln\u00fd pouh\u00fdm okem. RCW 86 je vzd\u00e1len asi 8 000 sv\u011bteln\u00fdch let a m\u00e1 pr\u016fm\u011br p\u0159ibli\u017en\u011b 100 sv\u011bteln\u00fdch let.<\/p>\n
<\/p>\n
**Credit**: Chinese astronomers<\/p>\n","protected":false},"excerpt":{"rendered":"
V roce 185 n. l. zaznamenali \u010d\u00edn\u0161t\u00ed astronomov\u00e9 v\u00fdskyt nov\u00e9 hv\u011bzdy v hv\u011bzdn\u00e9m obrazci Nanmen. Tato \u010d\u00e1st oblohy je na modern\u00edch hv\u011bzdn\u00fdch map\u00e1ch ztoto\u017e\u0148ov\u00e1na s \u010d\u00e1st\u00ed ji\u017en\u00ed souhv\u011bzd\u00ed Centaura. Ve […]<\/p>\n","protected":false},"author":1,"featured_media":3976,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3975","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nasa"],"_links":{"self":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/3975","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/comments?post=3975"}],"version-history":[{"count":0,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/3975\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media\/3976"}],"wp:attachment":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media?parent=3975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/categories?post=3975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/tags?post=3975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}