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;