On February 3rd, 2026, our group, together with a few special guests, gathered to bid farewell to our dear colleague Ana Bokulic, who is returning to her hometown of Zagreb. It was a lovely occasion to share memories and good wishes. We also said goodbye to our friend Romain Gervalle (in absentia) as he returns to France. We look forward to welcoming you both again soon!
In this talk, we investigate two radiation phenomena around compact objects.
On January 20th, 2026, the art–science exhibition was officially (re)opened at Fábrica - Centro Ciência Viva de Aveiro. The event was hosted by Fábrica’s director, Pedro Pombo, and brought together the head of the Department of Mathematics, Alexandre Almeida, and the director of CIDMA, Delfim Torres, along with several colleagues. This initiative is another step in sharing the beauty of science with a broader audience, strengthening the connection between scientific research and society.
Black holes are not merely cosmic sinks; they are the universe's most efficient reservoirs of energy, characterized by their mass, angular momentum (spin), electric charge, and surrounding magnetic fields. We explore the theoretical frameworks for tapping into these vast reserves.
In this talk, I will present our recent work on scattering of two boson stars by taking into account three effects: point-mass gravitational, tidal, and short-range scalar-field interactions. We first derive the analytical expressions of the scattering angle using PM-EFT techniques, providing the first analytical treatment of boson stars as a two-body problem.
Part 1: kobra: A Vlasov Code with AMR
Current and former members of Gr@v met at the XVIII Black Holes Workshop in Lisbon.
Gr@v had the pleasure to host Zakaria Belkhadria (Université de Genève/Università degli Studi di Cagliari) who gave the group seminar on Dec 12th 2025.
Gr@v is welcoming expressions of interest for the 8th edition of the CEEC competition. This call will fund three-year postdoctoral research contracts, offered at two levels depending on the applicant’s experience. Interested researchers are invited to contact the group coordinator. Application deadline: 29 January 2026.
In the first week of December 2025 we had the pleasure of hosting Panagiotis Dorlis and Hendrik Mannenga, visiting from Athens and Oldenburg. Panagiotis gave an intersting seminar on How much gravitons can be squeezed. Many thanks for your visits!