2015 marks the centennial of the General Theory of Relativity (GR), presented by Albert Einstein in 1915. Motivated by this celebration, understanding that GR is an important part of the scientific world heritage and recognizing the growing international influence of Portuguese researchers working in this area, the "Portuguese Society of Relativity and Gravitation" (SPRG) was formally established in 2015.
C. Herdeiro was the guest interviewee of Porto Canal's "Mentes que Brilham". Watch and listen to the conversation with interviewer Cláudia Fonseca about black holes and some of the research work made at Gr@v in this area.
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 will be held at the University of Aveiro in 18-19 December 2014.
Abstract: The origin of almost all space weather related phenomenology is the large scale solar magnetic field. In this talk I'll speak about the dynamo mechanism that is operating in the solar interior and generating this large scale field and how it is modeled. I'll briefly review the classical mean-field dynamo theoretical framework usually used to tackle this problem and how observational constraints modified it over the years. I'll highlight its achievements and problems. Than I'll introduce a more recent and complementary modelling approach: 3D MHD simulations of solar convection. These simulations only recently started to exhibit solar-like features paving the way to virtual laboratories of the Sun. The results presented in this talk are based on the EULAG-MHD code.
Abstract: With the numerous pieces of evidence for the close evolution of super-massive black holes (SMBHs) and their host galaxies throughout the cosmic history, there has been a great effort to understand what drives such fact. One key point which could help achieve that goal is to observe the very first SMBHs in the early Universe and explore the initial conditions and what sets such co-evolution. This talk will guide you through the observational perspectives of this cosmic dance between SMBHs and their hosts, and the some alternative strategies to study them.
Abstract: In this talk, we introduce the field of General Relativistic Magnetohydrodynamics (GRMHD) and give an overview on recent effort toward simulating and visualizing astrophysically realistic gas dynamics around compact binaries. In particular we motivate our group's approach, where a post-Newtonian expansion is used to construct an analytic spacetime, and we show preliminary results of circumbinary disks surrounding an equal-mass non-spinning black hole binary.
Abstract: Callegari and Rodríguez (2013) numerically show that, in the domain of the classical model of spin-orbit resonances developed for natural satellites and Mercury, (Goldreich & Peale 1966), the rotation of super-earths with orbital period P
Juan Carlos Degollado Daza, who has been a post-doctoral research at Gr@v since 2012, working on numerical relativity, has accepted a permanent professor position at the University of Guadalajara, Mexico. Congratulations Juan Carlos, well done!
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
