{"id":11784,"date":"2021-06-04T11:54:19","date_gmt":"2021-06-04T09:54:19","guid":{"rendered":"http:\/\/agora.xtec.cat\/inslacetania\/?p=11784"},"modified":"2021-06-04T11:54:19","modified_gmt":"2021-06-04T09:54:19","slug":"que-son-les-supernoves","status":"publish","type":"post","link":"https:\/\/agora.xtec.cat\/inslacetania\/revista\/que-son-les-supernoves\/","title":{"rendered":"Qu\u00e8 s\u00f3n les supernoves?"},"content":{"rendered":"

A l’espai hi ha molts descobriments per fer i molts d\u2019altres que no podrem arribar a comprendre mai. Tot i aix\u00ed, la humanitat ha fet, i segueix fent, grans aven\u00e7os en la investigaci\u00f3 de l\u2019univers. Avui us parlarem d\u2019un d\u2019ells, les supernovas.<\/span><\/p>\n

Una supernova \u00e9s una explosi\u00f3 energ\u00e8tica encara m\u00e9s gran que una nova (explosi\u00f3 termonuclear a la superf\u00edcie d\u2019una nana blanca quan hi ha acreci\u00f3 d’hidrogen).<\/span><\/p>\n

La supernova indica la \u00faltima etapa de \u201cvida\u201d d\u2019una estrella i t\u00e9 una massa vuit cops m\u00e9s gran que el Sol.<\/span><\/p>\n

\u00a0En aquest proc\u00e9s la estrella explota degut a que no es pot fusionar m\u00e9s. Quan aix\u00f2 passa, la lluminositat de l\u2019estel \u00e9s de 10 per 10 (elevat a 8). Aquestes radiacions de llum poden durar des de setmanes fins a mesos.\u00a0<\/span><\/p>\n

A m\u00e9s a m\u00e9s, al explotar, les supernoves desprenen elements pesants del seu cos omplint l\u2019espai que l\u2019envolta de n\u00favols de pols i gas a una velocitat de 15.000 a 40.000 km per hora.<\/span><\/p>\n

La primera supernova registrada va ser la SN 185 i, actualment, la m\u00e9s espectacular registrada fins al moment \u00e9s <\/span>SN2016aps (registrada el 2016)<\/span><\/p>\n

Tot i que no ens podem acostar suficientment (f\u00edsicament parlant) a una per veure-la amb els nostres propis ulls, sempre les podem copiar en les pel\u00b7l\u00edcules de ci\u00e8ncia ficci\u00f3.<\/span><\/p>\n

\"\"<\/a> \"\"<\/a><\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

A l’espai hi ha molts descobriments per fer i molts d\u2019altres que no podrem arribar a comprendre mai. Tot i aix\u00ed, la humanitat ha fet, i segueix fent, grans aven\u00e7os en la investigaci\u00f3 de l\u2019univers. Avui us parlarem d\u2019un d\u2019ells, les supernovas. Una supernova \u00e9s una explosi\u00f3 energ\u00e8tica encara m\u00e9s gran que una nova (explosi\u00f3 […]<\/p>\n","protected":false},"author":679,"featured_media":11788,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[387,125,150,102],"tags":[],"class_list":["post-11784","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-curiositats","category-albums","category-i-tu-que-en-saps","category-revista"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/posts\/11784","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/users\/679"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/comments?post=11784"}],"version-history":[{"count":2,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/posts\/11784\/revisions"}],"predecessor-version":[{"id":11847,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/posts\/11784\/revisions\/11847"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/media\/11788"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/media?parent=11784"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/categories?post=11784"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/tags?post=11784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}