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Ferrando Bargues, Joan J.; Morales Lladosa, Juan Antonio; Portilla Moll, Miquel | |||
Aquest document és un/a article, creat/da en: 1989 | |||
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We use the Einstein equations, stated as an initial-value problem (3+1 formalism), to present a method for obtaining a class of solutions which may be interpreted as the gravitational field produced by a mixture of two perfect fluids. The four-velocity of one of the components is assumed to be a shear-free, irrotational, and geodesic vector field. The solutions are given up to a set of a hyperbolic quasilinear system. | |||
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