Radiating gravitational collapse with shear viscosity |
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Authors: | R Chan |
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Institution: | Observatório Nacional, DAGE, Rua Gal. JoséCristino 77, São Cristóvão, CEP 20921-400, Rio de Janeiro, Brazil;University of Massachusetts, Department of Physics and Astronomy, Graduate Research Center, Amherst, MA 01003-4525, USA |
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Abstract: | A model is proposed of a collapsing radiating star consisting of an isotropic fluid with shear viscosity undergoing radial heat flow with outgoing radiation. The pressure of the star, at the beginning of the collapse, is isotropic but owing to the presence of the shear viscosity the pressure becomes more and more anisotropic. The behaviour of the density, pressure, mass, luminosity and the effective adiabatic index is analysed. Our work is compared to the case of a collapsing shearing fluid of a previous model, for a star with 6 M⊙. |
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Keywords: | gravitation relativity supernovae: general |
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