Gravitational centre of mass and localization of dark energy

We analyse the expression for the centre of mass density of the gravitational field in the context of the teleparallel equivalent of general relativity. The purpose is to investigate the localization of dark energy in the three-dimensional space, induced by a cosmological constant in a simple Schwarzschild-de Sitter space-time. We also investigate the gravitational centre of mass density in a particular model of dark matter, in the space-time of a point massive particle and in an arbitrary space-time with axial symmetry. The results are plausible, and lead to the notion of gravitational centre of mass distribution function.