Publication date: Dec 2005
Abstract:
Extremely compact objects (R<3 GM/c2) contain null
geodesics that are captured by the object. Certain part of neutrinos
produced in their interior will therefore be trapped, thus influencing
neutrino luminosity of the objects and their thermal evolution. This
effect was investigated for the interior Schwarzschild spacetimes with
the uniform distribution of energy density by Stuchlík, Z., Török, G.,
Hledík, S. and Urbanec, M. (2005), Neutrino trapping in extremely
compact objects, Classical Quantum Gravity, submitted. We will
investigate here influence of the cosmological constant on the trapping
phenomena. We use again the simplest model for interior of such objects
based on the interior Schwarzschild-(anti-)de Sitter spacetimes. We
determine behaviour of the trapping coefficients, i.e., „global“ one
representing influence on the neutrino luminosity and „local“ one
representing influence on the cooling process.
Authors:
Stuchlík, Zdeněk; Urbanec, Martin; Török, Gabriel;