Nelson Eiró visited Gr@v just before successfully defending his M.Sc. thesis on "Strong lensing of light and shadow of a Black Hole surrounded by a heavy accretion disk", at IST-Lisbon, supervised by C. Herdeiro and P. Cunha. This visit coincided with the beginning of a long term visit by Aichen and Ruyong Li, both graduates from Beijing University of Technology.
Nico Sanchis-Gual and Nuno Santos visited Gr@v. Nico gave a seminar on "Non-linear dynamics of spinning bosonic stars: formation and stability". Nuno, an IST graduate, will join Gr@v as a PhD student in 2020, having been the top ranked candidate in the 2019 Individual FCT grant call in the Physics panel.
In the framework of the COST action MW-Gaia, related with the Gaia (ESA) mission, for which Gr@v member Sonia Anton serves as MC member, a 3-days workshop on "Astrometry and gravitation - A dynamical view of the sky" is being organised on 4-6 December 2019, at the Observatoire de la Côte d’Azur, Mont Gros site, Nice, France. More info here.
I present a review on combined numerical and analytical efforts to construct "geon"-type solutions of the Einstein equations. Geons are time periodic - hence non-radiating - and spatially localized objects.
Spherical boson and Proca stars have been extensively studied in the non-linear regime, but no numerical simulations of rotating bosonic stars have been performed.
Professor Marcus Werner from Kyoto University visited Gr@v and presented a seminar on Optical Geometry and Constructive Gravity, on September 30th 2019.
The XII Black Holes Workshop, an annual series of meetings organised by the Portuguese strong gravity community since 2008, will take place in Guimarães, on December 19-20, 2019. More information here.
A long standing problem in General Relativity has been the dynamical properties of spinning bosonic stars. In the paper "Non-linear dynamics of spinning bosonic stars: formation and stability", to appear in Physical Review Letters, the dynamical behaviour of these objects has been unveiled.
The Kavli-RISE Summer School on Gravitational Waves took place at the Centre for Theoretical Cosmology, University of Cambridge, on September 23-27, 2019. C. Herdeiro was one of the invited Lecturers.
Pedro Fernandes, a student that graduated from IST-Lisbon, after doing his Master thesis under the supervision of C. Herdeiro and E. Radu on "Spontaneous Scalarization of Charged Black Holes" is moving to Queen Mary and Westfield College, University of London, where he obtained a scholarship for pursuing his Ph.D. studies. Congratulations Pedro!