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Descripción
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| In this paper, we study self-similar solutions, and their linear stability as well, describing the ¿ow within a spherical shell with ¿nite thickness, expanding according to a power law of time, tq, where q> 0. The shell propagates in a medium with initially uniform density and it is bounded by a strong shock wave at its outer border while the inner face is submitted to a time-dependent uniform pressure. For q = 2/5, the well-known Sedov¿Taylor solution is recov¬ered. In addition, although both accelerated and decelerated shells can be unstable against dynamic perturbations, they exhibit highly different behaviors. Finally, the dispersion re¬lation derived earlier by Vishniac (Vishniac, E.T. in Astro¬phys. J. 274:152, 1983) for an in¿nitely thin shell is obtained in the limit of an isothermal shock wave. | |
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Internacional
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Si |
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Nombre congreso
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HEDLA 2010, 8th International Conference on High Energy density Phyiscs Laboratory Astrophysics. |
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Tipo de participación
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960 |
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Lugar del congreso
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Pasadena, California |
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Revisores
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Si |
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ISBN o ISSN
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DOI
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DOI 10.1007/s10509-010-0563-z |
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Fecha inicio congreso
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15/03/2010 |
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Fecha fin congreso
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18/03/2010 |
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Desde la página
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0 |
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Hasta la página
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6 |
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Título de las actas
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Astrophys Space Sci . |