Abstract: We shall review an analytic method, first used by D'Eath (1978), to study high speed collisions of black holes at finite boost, and extract the gravitational radiation.
Abstract: We develop a procedure for models described by one real scalar field in (1+1) dimensions, that makes posible to obtain new models and their static solutions straightforwardly from one known model. The method is illustrated by some applications and extended byp traveling wave solutions of systems described by high-order partial differential equations.
Abstract: Recently we have investigated the wave equation of a massive vector boson, which is governed by Proca field, in the D-dimensional Schwarzschild background. Because the mass term introduce a coupling between two physical degrees of freedom, we have to solve s set of coupled ordinary differential equations.
Abstract: I will introduce the local concept of Apparent Horizon, provide examples, and show how it is related to the global concept of Event Horizon.
Abstract: Wave scattering by black holes is a subject that has received much attention in the 1970s, and has been extensively studied since then. In this presentation we analyze scattering properties of black hole analogues in acoustic systems. Analogues are artificial systems with some of the key properties of black holes that were proposed by Unruh in 1981.
Abstract: It is well known that D-dimensional vacuum gravity with D-2 commuting Killing vectors is integrable. For such theories a solution generating technique has been available since it was first presented by Belinski and Zakharov in 1978.
The European Commission Research Executive Agency approved an International Research Staff Exchange Scheme (IRSES) Marie Curie action on "Numerical Relativity and High Energy Physics" (NRHEP), within the FP7 People Programme.
Abstract: We review some literature about gravitational collapse and discuss how some scenarios can lead to the formation of naked singularities. References: gr-qc/0312123, gr-qc/0308012, gr-qc/0109051, gr-qc/9804075.
Abstract: The knowledge of the Universe is essentially based on the theory of general relativity (GR). If from one hand, solar system data is in excellent agreement to the theory, available cosmological evidence on the other, is consistent with GR provided one assumes the existence of dark energy and dark matter.