In the wake of the detection of gravitational waves from black hole mergers and at the door step of an era of precision electromagnetic observations of the horizon scale for black hole candidates, in particular with the Event Horizon Telescope, the gravitation groups at Aveiro University, Gr@v, and at IST-Lisbon, Grit, will organize a two days workshop on Gravitational Lensing and Black Hole Shadows, held at the University of Aveiro (Portugal), on the 3rd and 4th of November 2016.
The XXVI National Meeting of Astronomy and Astrophysics will take place at the University of Aveiro, on the 8th and 9th September 2016. This meeting is organized by the Department of Physics of the University of Aveiro and the Center for Research and Development in Mathematics and Applications (CIDMA), in partnership with the Portuguese Astronomy Society (SPA).
Abstract: We review different aspects of the construction and perturbations of homogeneous black strings in Gauss-Bonnet and third-order Lovelock theory, which are unstable under s-wave perturbations.
The awakening of the gravitational astronomy era, together with the ever increasing precision of electromagnetic observations, motivates scrutinizing models of alternative compact objects and their phenomenology. As a contribution to this effort, Gr@v researchers will be guest editors of a Focus issue of Classical and Quantum gravity on hairy black holes.
Abstract: The talk is devided into two parts: I will talk about the current status and the prospects of relativistic geodesy and a very interesting project related to this that is called „geoQ“.
Abstract: In this talk, I will first discuss the challenges one faces when trying to explain the observed late-time acceleration of our Universe, due to the obstacles which the yet unkown physics of dark energy and dark matter place when we try to understand the true theory of gravity at large scales. In this context, I will further explain how model-independent observables have the potential to reveal whether gravity is truly modified at large scales, and will describe a fundamental, underlying relation between large-scale modifications of gravity and the (non-trivial) propagation of gravitational waves, as well as its observational implications for cosmology and astrophysics.
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
