{"id":70215,"date":"2018-03-09T23:14:44","date_gmt":"2018-03-09T23:14:44","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/emision-de-rayos-x-de-novas-clasicas\/"},"modified":"2018-03-09T23:14:44","modified_gmt":"2018-03-09T23:14:44","slug":"emision-de-rayos-x-de-novas-clasicas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/emision-de-rayos-x-de-novas-clasicas\/","title":{"rendered":"Emisi\u00f3n de rayos x de novas cl\u00e1sicas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Gloria Sala Cladellas <\/strong><\/h2>\n<p>La detecci\u00f3n de emisi\u00f3n de rayos x de las novas cl\u00e1sicas despu\u00e9s de su explosi\u00f3n proporciona informaci\u00f3n crucial sobre el fen\u00f3meno de nova.Las propiedades y la duraci\u00f3n de la emisi\u00f3n de rayos x baldos son indicadores directos de la capa de combusti\u00f3n termonuclear remanente en la superficie de la enana balca, mientras quela emisi\u00f3n de rayos x duros representan un diagn\u00f3stico de las condiciones en el material eyectado por la nova y puede indicar el restablecimiento del acrecimiento en el sistema binario.  en esta tesis se ha desarrollado un modelo num\u00e9rico para simular las condiciones en la envoltura de la enana balca despu\u00e9s dela explosi\u00f3n de nova, con combusti\u00f3n estacionaria de higr\u00f3geno.Se han considerado cinco composiciones qu\u00edmicas , correspondientes a abundancias realistas de novas de co y de one de los modelos de jos\u00e9 &amp; hernanz (1998,apj, 9494,680).La evoluci\u00f3n se aproxima como una secuencia de estados estacionarios con masas decrecientes.Los resultados muestran que una envoltura de enana blanca combusti\u00f3n estacionaria de hidrogeno evoluciona a lo largo de un \u00abplateau\u00bbde luminosidad casi constante,reduciendo su radio fotosf\u00e9rico y aumentando la temperatura efectiva a medida que la masa de la envoltura rica en hidr\u00f3geno se ve reducida por la combusti\u00f3n termonuclear.Las reacciones termonucleares contin\u00faan hasta que las masa de la envoltura se ve reducida a un valor m\u00ednimo.Cr\u00edtico, por debajo del c\u00faal no existe una soluci\u00f3n estable para la envoltura con combusti\u00f3n estacionaria. en este punto, las fuentes de combusti\u00f3n termonuclear se apagan y la estrella se empieza a enfriar.  los resultados de los modelos de envoltura de enana se han comparado con observaciones en rayos x de novas desp\u00faes de la explosi\u00f3n.En concreto, se han comparado los resultados te\u00f3ricos con las observaciones realizadas por rosat de las tres nomvas que detect\u00f3 dicho sat\u00e9lite con emisi\u00f3n de rayos x blandos:v1974 cyg(nova cygni<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Emisi\u00f3n de rayos x de novas cl\u00e1sicas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Emisi\u00f3n de rayos x de novas cl\u00e1sicas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Gloria Sala Cladellas <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 22\/09\/2004<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Margarida Hernanz Carb\u00f3<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: jordi Isern vilaboy <\/li>\n<li>jordi Jos\u00e9 pont (vocal)<\/li>\n<li>rosario Gonz\u00e1lez riestra (vocal)<\/li>\n<li>vincent Tatischeff (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Gloria Sala Cladellas La detecci\u00f3n de emisi\u00f3n de rayos x de las novas cl\u00e1sicas despu\u00e9s de su [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"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 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