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A causal model of radiating stellar collapse

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We find a simple exact model of radiating stellar collapse, with a shear-free andnon-accelerating interior matched to a Vaidya exterior. The heat flux is subject to causalthermodynamics, leading to self-consistent determination of the temperature T . We solve for Texactly when the mean collision time c is constant, and perturbatively in a more realistic case ofvariable Tc. Causal thermodynamics predicts temperature behaviour that can differ significantlyfrom the predictions of non-causal theory. In particular, the causal theory gives a higher centraltemperature and greater temperature gradient
Original languageEnglish
Pages (from-to)323-330
JournalClassical and Quantum Gravity
Issue number2
Publication statusPublished - Feb 1998

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