Luminosity profiles and contraction of radiating spheres |
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| Authors: | R. Aquilano W. Barreto L. A. Nuñez |
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| Affiliation: | (1) Instituto de Física Rosario (CONICET-UNR), Blvd. 27 de Febrero 210 bis, 2000 Rosario, Argentina;(2) Planetario y Observatorio Astronómico Municipal, Rosario, Argentina;(3) Instituto Politécnico Sup. Gral. San Martín (UNR), Rosario, Argentina;(4) Laboratorio de Física Teórica, Departamento de Física, Escuela de Ciencias, Núcleo Sucre, Universidad de Oriente Cumaná, Venezuela;(5) Laboratorio de Física Teórica, Departamento de Física, Facultad de Ciencias, Universidad de Los Andes, Mérida, Venezuela |
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| Abstract: | A seminumeric method by Herrera, Jiménez and Ruggeri is used to study the evolution of general relativistic spheres in the free streaming radiation approximation, when specific contraction schemes are imposed and for particular oscillatory radiation profiles. On one hand, the emerging radiation is studied for oscillating contracting spheres, on the other, the variation of the boundary surface is analyzed when a pulsating profile is provided. We consider three particular equations of state previously studied. It is found that the oscillatory frequency of the surface for the equations of state considered coincides with the frequency of the oscillation for the radiation profile. |
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