Els astr\u00f2noms van anunciar que l’estrella T Coronae Borealis (T CrB), que est\u00e0 situada a la constel\u00b7laci\u00f3 de Corona Borealis, podria explotar en qualsevol moment, fent-se visible des de la Terra. Es tracta d’una nova recurrent, un tipus d’estrella que experimenta explosions cada 80 anys. L\u2019\u00faltima erupci\u00f3 va ser l\u2019any 1946, i els cient\u00edfics preveuen que la pr\u00f2xima podria produir-se entre mar\u00e7 i abril de 2025. De moment, no s’ha produ\u00eft aquesta explosi\u00f3, per\u00f2 els cient\u00edfics no han perdut l’esperan\u00e7a, ja que es preveu que exploti aquest 2025.<\/p>\n
Per qu\u00e8 explota T CrB?<\/strong><\/span> Com i quan es podr\u00e0 observar?<\/strong><\/span> Un esdeveniment astron\u00f2mic \u00fanic<\/strong><\/span> Els astr\u00f2noms van anunciar que l’estrella T Coronae Borealis (T CrB), que est\u00e0 situada a la constel\u00b7laci\u00f3 de Corona Borealis, podria explotar en qualsevol moment, fent-se visible des de la Terra. Es tracta d’una nova recurrent, un tipus d’estrella que experimenta explosions cada 80 anys. L\u2019\u00faltima erupci\u00f3 va ser l\u2019any 1946, i els cient\u00edfics preveuen […]<\/p>\n","protected":false},"author":1331,"featured_media":25880,"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":[136,102],"tags":[],"class_list":["post-25877","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-noticies","category-revista"],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/posts\/25877","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\/1331"}],"replies":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/comments?post=25877"}],"version-history":[{"count":3,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/posts\/25877\/revisions"}],"predecessor-version":[{"id":26226,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/posts\/25877\/revisions\/26226"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/media\/25880"}],"wp:attachment":[{"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/media?parent=25877"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/categories?post=25877"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agora.xtec.cat\/inslacetania\/wp-json\/wp\/v2\/tags?post=25877"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nT CrB forma part d\u2019un sistema binari, compost per una nana blanca i una gegant vermella. La gegant vermella, en el seu proc\u00e9s final de vida, allibera hidrogen, que \u00e9s absorbit per la nana blanca. Quan el material s\u2019acumula i arriba a una temperatura i pressi\u00f3 extremes, es provoca una explosi\u00f3 termonuclear. Aix\u00f2 provoca un augment sobtat de lluminositat, fent que l’estrella brilli milers de vegades m\u00e9s durant uns dies.<\/p>\n
\nEl dia estimat va ser el 27 de mar\u00e7 de 2025, per\u00f2 finalment l’explosi\u00f3 no es va produir. Quan esclati, T CrB brillar\u00e0 tant com l’Estrella Polar, sent visible a simple vista. Per trobar-la, cal buscar la constel\u00b7laci\u00f3 de Corona Borealis, que es troba entre les estrelles Vega (de la constel\u00b7laci\u00f3 de Lyra) i Arturo (de Bootes). La millor hora per observar-la ser\u00e0 despr\u00e9s del capvespre.<\/p>\n
\nAquest fenomen \u00e9s molt especial, ja que poques noves recurrents tenen explosions previsibles i tan brillants. A m\u00e9s, \u00e9s una gran oportunitat per als astr\u00f2noms, que podran estudiar aquest proc\u00e9s en diferents longituds d’ona.<\/p>\n","protected":false},"excerpt":{"rendered":"