An extra curricular course on "General Relativity, Cosmology and Black Holes" will run throughout the second semester 2011/12. Only basic knowledge of special relativity and Newtonian gravity will be assumed. By default, sessions will take place every friday at 14H00 in the GAP room. Some lecture notes will be handed out and exercises will be set in every session and solved in the following one.
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. I will discuss the first fully non-linear numerical simulations of black hole binaries in a de Sitter universe and comment on the various types of apparent horizons that can be found (black hole, white hole and cosmological).
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.
From astrophysics to high-energy physics, from information theory to quantum gravity, black holes have acquired an ever increasing role in fundamental physics, and are now part of the terminology of many important branches of observational, theoretical and mathematical physics. This workshop aims at bringing together experts about black holes in all their aspects.
The fourth edition of the Black Holes Workshop was held at the University of Aveiro in 19-20 December 2011.
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.
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
