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Equilibrium Magnetized Accretion Discs around Hairy Black Holes

GGD - Gr@V Seminar
Speaker
Juan José Zaldívar Vázquez (Instituto Nacional de Astrofísica, Óptica y Electrónica, INAOE)
Event date
Venue
Hybrid: Sala 11.2.21 and Teams
Event Website
Event type

Equilibrium accretion tori are used as initial conditions for GRMHD simulations to study accretion onto compact objects. In this talk, I present the construction of magnetized Komissarov-type discs within hairy black hole spacetimes. I show that equilibrium configurations can be consistently obtained in these backgrounds, as in the standard Kerr case.

Probing Vacuum General Relativity: Where to Look and What to Seek?

GGD - Gr@V Seminar
Speaker
Andrea Maselli (Gran Sasso Science Institute)
Event date
Venue
Hybrid: Sala Sousa Pinto and Teams
Event Website
Event type

Astrophysical environments provide an arena to test vacuum General Relativity with gravitational waves. In this talk, I will discuss what binary black hole observations can probe beyond the vacuum paradigm, and where fundamental limitations arise.

Interference, coherence and interferometric signature: The Physics behind black hole imaging

GGD - Gr@V Seminar
Speaker
Haroldo C. Duarte Lima (Federal University of Maranhão)
Event date
Venue
Hybrid: Sala Sousa Pinto and Teams
Event Website
Event type

Our understanding of the cosmos is shaped by what we are able to observe in the sky. Resolving progressively smaller astrophysical structures requires instruments with increasingly high angular resolution. However, even an ideal telescope is limited by nature through diffraction, which ties its resolving power to the diameter of its collecting aperture.

Farewell to Ana (and Romain)

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!

Tracing Curvature: Where Art Meets Science

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.