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        Supernovae: Where and why do they break off?

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        T016300002560/0
        http://www.saber.ula.ve/handle/123456789/16850
        http://repositorioslatinoamericanos.uchile.cl/handle/2250/200960
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        Author
        Herrera, L.
        Núñez, Luis
        Institutions
        • Universidad de los Andes (Venezuela)
        Abstract
        Supernovae: Where and why do they break off? (Herrera, L.; Núñez, Luis) Abstract The precise mechanism whereby gravitational collapse leads to a type II supernova event is one of the most controversial points in the understanding of the final stages of stellar evolution. The 'bounceshock' mechanism and the proposed `long-term neutrino mediated' processes compete to explain the ejection of the outer envelopes of the star. Despite their differences, both descriptions consider the shock as mainly responsible for the ejection of the outer mantle in a supernova burst. In this note we discuss results from collapse calculations in which the shock is considered as an interface separating the quasi-static stiff core from the outer mantle. In the models considered the shock fades out and becomes a new boundary surface delimiting the compact homogeneous remnant. The resulting pictures become intelligible in the light of a recently proposed generalization of the concept of adiabatic index for systems where radiation flux is present. Artículo publicado en: Astrophysical and Space Science. 188: 9-18 1992.
         
        laherrera@telcel.net.ve
         
        nunez@ula.ve
         
        Nivel monográfico
         
        Subjects
        Distribuciones autogravitantes
        Astrofísica
        Facultad de Ciencias.
        Astrophysics
        Gravitational collapse
        Neutrinos
        Stellar envelopes
        Stellar evolution
        Supernovae
        Relativity
        Shock waves
        Stellar luminosity
        Supernova 1987a
        Artículos
        Laboratorio de Física Teórica

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        Red de Repositorios Latinoamericanos
        + of 2.515.000
        Available publications
        163 Participating institutions
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Membership Login
        Featured collections
        • Latin American Theses
        • Argentinean Theses
        • Chilean Theses
        • Peruvian Theses
        Latest collections added
        • Argentina
        • Brazil
        • Colombia
        • México
        Dirección de Servicios de Información y Bibliotecas (SISIB)
        Universidad de Chile
        Red de Repositorios Latinoamericanos | 2006-2018