Pre-relaxation Processes in a Radiating Relativistic Sphere

Hyperbolic theories of dissipation: Why and when do we need them?

“…Finally, it is worth mentioning that relaxation time appears to be quite relevant in the outcome of gravitational collapse as many numerical and analytical calculations indicate (see [24], [30] and references therein). In particular it has been shown that, for otherwise identical boundary and initial conditions, larger values of τ imply more flattened and long lasting pulses of emission, thereby affecting the evolution of the object.…”

A general class of Euclidean stars

“…The thermodynamics of shear-free radiating stars have provided us with a rich crop of interesting physics regarding relaxational effects on the evolution of the temperature and luminosity profiles. Using the causal transport equations of Maxwell-Catteneo form for the thermodynamical fluxes, it has been shown in earlier investigations that relaxational effects lead to higher core temperatures as compared to their noncausal counterparts [4][5][6][7][8].…”

Temperature evolution during dissipative collapse

“…Dissipative processes such as heat generation, shear, particle creation and bulk viscosity during stellar collapse have been extensively studied in the past [1][2][3][4][5][6]. It has been shown in numerous models that noncausal transport equations predict thermodynamical behaviours that can be far different from their noncausal counterparts.…”