Abstract: In the current paradigm, AGNs are galaxies that harbour in their centre super massive black holes, the later being the main engine that explains the multi-messenger and extreme nature of these objects. In this talk I will present recent results from a multi-frequency study of radio loud AGNs, and summarise work in progress in the framework of the Gaia (ESA) mission and the Square Kilometer Array pathfinders.
Abstract: The natural laboratories for testing the strong-field regime of gravity and for testing the modified gravitational theories are the neutron stars. In my talk I will present some results about neutron stars, both static and rotating, in f(R) theories and in scalar-tensor theories of gravity. Especially I will focus on effects in modified gravity neutron stars that drastically change the structure of the stars in comparison with General Relativity.
Abstract: We consider the possibility of multiply-connected spacetimes, ranging from the Einstein-Rosen bridge, geons, and the modern renaissance of space-time tunnels/wormholes.
Gr@v Ph.D. student Flávio Coelho successfully defended his Ph.D. thesis with title "Radiadion from a D-dimensional collision of gravitational shock waves" on February 20th 2015. Congratulations Flávio!
Abstract: In this talk I review a recent solution generating technique based on the symmetries of the dimensionally reduced Lagrangian of the Einstein-Maxwell-dilaton system in five dimensions.
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
