{"id":4108,"date":"2016-04-05T12:16:02","date_gmt":"2016-04-05T10:16:02","guid":{"rendered":"http:\/\/cienciagandia.webs.upv.es\/ca\/2016\/04\/ondas-gravitacionales-100-anos-esperandolas\/"},"modified":"2016-04-06T10:46:33","modified_gmt":"2016-04-06T08:46:33","slug":"ones-gravitacionals-100-anys-esperant-les","status":"publish","type":"post","link":"https:\/\/cienciagandia.webs.upv.es\/ca\/2016\/04\/ones-gravitacionals-100-anys-esperant-les\/","title":{"rendered":"Ones gravitacionals, 100 anys esperant-les"},"content":{"rendered":"<p>Febrer de 2016, la comunitat de cient\u00edfics\u00a0<strong><a href=\"http:\/\/www.ligo.org\/\" target=\"_blank\">LIGO<\/a><\/strong>\u00a0per a l&#8217;observaci\u00f3 <strong>d&#8217;ones gravitacionals<\/strong> anuncia que <a href=\"http:\/\/elpais.com\/elpais\/2016\/02\/10\/ciencia\/1455124978_980574.html\" target=\"_blank\">per primera vegada han estat capa\u00e7os de detectar aquestes ones<\/a> a trav\u00e9s dels seus dos interfer\u00f2metres l\u00e0ser d&#8217;ultra precisi\u00f3\u00a0ubicats als Estats Units, just 100 anys\u00a0despr\u00e9s\u00a0de la predicci\u00f3 d&#8217;aquestes ones com a pertorbacions de l&#8217;espai-temps per part de la <strong><a href=\"https:\/\/ca.wikipedia.org\/wiki\/Relativitat_general\" target=\"_blank\">teoria de la Relativitat General d&#8217;Einstein<\/a><\/strong>. Concretament, el 14 de setembre de 2015 aquests instruments \u00f2ptics observaren en coincid\u00e8ncia les vibracions provocades per les ones gravitat\u00f2ries generades pel\u00a0col\u00b7lapse\u00a0de dos forats negres fa uns 1.300 milions anys, <strong>esdeveniment GW150914.<\/strong><br \/>\n<!--more--><br \/>\nNo dir\u00e9 que \u00e9s un fet hist\u00f2ric, \u00faltimament tot ho \u00e9s, no suposant doncs un m\u00e8rit addicional.\u00a0S\u00ed que\u00a0suposa una confirmaci\u00f3 m\u00e9s de la<strong> Relativitat General d\u2019Einstein<\/strong>, ja confirmada amb l\u2019evid\u00e8ncia\u00a0de qu\u00e8\u00a0la llum es corba en pres\u00e8ncia de camps gravitatoris i ja assimilada fins a tal punt que la incorporem en la tecnologia de\u00a0sat\u00e8l\u00b7lits\u00a0per poder referenciar-nos amb el GPS adequadament. A m\u00e9s a m\u00e9s,\u00a0GW150914\u00a0\u00e9s sols <strong>la primera alenada d\u2019una nova finestra que hem obert a l\u2019Univers<\/strong> per on podem percebre els fen\u00f2mens m\u00e9s energ\u00e8tics, i per tant, de m\u00e9s llarg abast de l\u2019Univers. Segur que ens arriben prompte nous sorolls i olors desconeguts, molt diferents dels de les mascletades, per\u00f2 igualment embriagadors.<\/p>\n<figure id=\"attachment_4100\" aria-describedby=\"caption-attachment-4100\" style=\"width: 630px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4100 size-full\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/2976_20120416172601_2012_04_16031.jpg\" alt=\"ondas gravitacionales LIGO\" width=\"640\" height=\"407\" srcset=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/2976_20120416172601_2012_04_16031.jpg 640w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/2976_20120416172601_2012_04_16031-393x250.jpg 393w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/2976_20120416172601_2012_04_16031-300x191.jpg 300w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/2976_20120416172601_2012_04_16031-150x95.jpg 150w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption id=\"caption-attachment-4100\" class=\"wp-caption-text\">Images: LIGO Laboratory<\/figcaption><\/figure>\n<p>No voldria tampoc deixar d\u2019acostar-me\u00a0al GW150914\u00a0des del punt de vista m\u00e9s emocional.\u00a0Aquest senyal\u00a0captat per\u00a0LIGO, a primer colp d\u2019ull\u00a0modest (haur\u00e9 vist centenars de senyals\u00a0pareguts\u00a0amb un micr\u00f2fon connectat a l\u2019oscil\u00b7loscopi), ens pot donar un bon tema de conversa si en algun moment establim contacte amb civilitzacions d\u2019altres planetes, no crec que puguem parlar-los de l\u2019\u00faltim Bar\u00e7a-Madrid ni tan sols de l\u2019oratge.<\/p>\n<p>A m\u00e9s a m\u00e9s,\u00a0el GW150914\u00a0ens eixampla la imaginaci\u00f3 als fans de\u00a0<strong>Star\u00a0Wars, o\u00a0Doraemon,<\/strong> considerant la possibilitat de<strong> viatjar per l\u2019hiperespai<\/strong> a velocitats superlum\u00edniques, <strong>o a trav\u00e9s del temps<\/strong>. Amb\u00a0GW150914, una vegada m\u00e9s podem dir: <strong>&#8216;que menuda \u00e9s la Humanitat, en aquest Univers tan descomunal! I que grans que som!\u00a0<\/strong>En\u00a0ser capa\u00e7os de desxifrar-lo cada vegada m\u00e9s amb noves eines i reptes (ll\u00e0stima que no siguem capa\u00e7os d\u2019aplicar el mateix grau de\u00a0col\u00b7laboraci\u00f3\u00a0per a tots els problemes).<\/p>\n<figure id=\"attachment_4101\" aria-describedby=\"caption-attachment-4101\" style=\"width: 630px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-4101 size-full\" src=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/7181_20130524190854_S0551398_llo_ham4.jpg\" alt=\"ondas gravitacionales LIGO\" width=\"640\" height=\"480\" srcset=\"https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/7181_20130524190854_S0551398_llo_ham4.jpg 640w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/7181_20130524190854_S0551398_llo_ham4-333x250.jpg 333w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/7181_20130524190854_S0551398_llo_ham4-300x225.jpg 300w, https:\/\/cienciagandia.webs.upv.es\/wp-content\/uploads\/2016\/04\/7181_20130524190854_S0551398_llo_ham4-150x113.jpg 150w\" sizes=\"auto, (max-width: 640px) 100vw, 640px\" \/><figcaption id=\"caption-attachment-4101\" class=\"wp-caption-text\">Images: LIGO Laboratory<\/figcaption><\/figure>\n<p>Imagine, tamb\u00e9, la satisfacci\u00f3 de milers de cient\u00edfics o enginyers, com la de la\u00a0col\u00b7lega <strong><a href=\"http:\/\/www.elmundo.es\/baleares\/2016\/02\/11\/56bce922ca4741770e8b45fe.html\" target=\"_blank\">Alicia Sintes<\/a>,<\/strong>\u00a0que\u00a0fa d\u00e8cades\u00a0que treballa per detectar aquestes ones, o els nervis de <strong><a href=\"http:\/\/elpais.com\/elpais\/2016\/02\/11\/ciencia\/1455187667_608086.html\" target=\"_blank\">Miquel Oliver<\/a><\/strong>, estudiant de doctorat, que participava en l\u2019operaci\u00f3 de control de l\u2019experiment quan es detectaren les ones. Tamb\u00e9 l\u2019emoci\u00f3 de l\u2019amic <strong><a href=\"https:\/\/www.linkedin.com\/in\/pau-amaro-seoane-34b41739\" target=\"_blank\">Pau Amaro<\/a><\/strong>, a l\u2019haver vist que els seus estudis i prediccions d\u2019ones gravitacionals en\u00a0col\u00b7lisions\u00a0bin\u00e0ries d\u2019aquest tipus s\u2019havien confirmat. Mire tamb\u00e9 cap a endins i em sent satisfet\u00a0en\u00a0poder contribuir amb el meu treball en\u00a0<strong><a style=\"line-height: 1.5;\" href=\"http:\/\/antares.in2p3.fr\/\" target=\"_blank\">ANTARES<\/a><\/strong><span style=\"line-height: 1.5;\"> i poder, aix\u00ed, <\/span><a style=\"line-height: 1.5;\" href=\"https:\/\/cienciagandia.webs.upv.es\/ca\/2015\/12\/el-campus-de-gandia-participa-en-la-construccio-del-major-telescopi-de-neutrins-del-mon\/\" target=\"_blank\">estudiar la detecci\u00f3 de neutrins<\/a><span style=\"line-height: 1.5;\"> en coincid\u00e8ncia amb aquestes ones, o de sentir-me tan a prop d\u2019aquest esdeveniment HIST\u00d2RIC. Ho sent, no m\u2019he pogut resistir.<\/span><\/p>\n<p><iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/XRCva2Z290g?rel=0\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<hr \/>\n<p style=\"text-align: center;\"><a href=\"http:\/\/www.upv.es\/pls\/oalu\/sic_per.info_persona?PE=K5MRNhA8C7gc7J%2Fw6%2B48TsJoLxh7N5azLBscBr07yV%2F0i7lVQyCjFXaFOtRc0p0zFGolqx5oQSlW%2FP0lsgPW4fo03BPAW9ehqQB5ROXbSMW4GBhETfsATw%3D%3D&amp;P_TIPOBUS=0&amp;P_VISTA=&amp;P_IDIOMA=v\" target=\"_blank\"><strong>Miquel Ardid<\/strong>,<\/a>\u00a0professor i investigador del <strong>Campus de Gandia.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Febrer de 2016, la comunitat de cient\u00edfics\u00a0LIGO\u00a0per a l&#8217;observaci\u00f3 d&#8217;ones gravitacionals anuncia que per primera vegada han estat capa\u00e7os de detectar aquestes ones a trav\u00e9s &#8230; <a title=\"Ones gravitacionals, 100 anys esperant-les\" class=\"read-more\" href=\"https:\/\/cienciagandia.webs.upv.es\/ca\/2016\/04\/ones-gravitacionals-100-anys-esperant-les\/\" aria-label=\"Read more about Ones gravitacionals, 100 anys esperant-les\">Llegir m\u00e9s<\/a><\/p>\n","protected":false},"author":9,"featured_media":4099,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[248],"tags":[706],"class_list":["post-4108","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divulgacio","tag-destacat-ca","resize-featured-image"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ones gravitacionals, 100 anys esperant-les<\/title>\n<meta name=\"description\" content=\"Miquel Ardid, del Campus de Gandia, ofereix la seua visi\u00f3 sobre la import\u00e0ncia de la detecci\u00f3 de les ones gravitacionals.\" \/>\n<meta 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