VII Amazonian Symposium on Physics
Our group is co-organizing the VII Amazonian Symposium on Physics, in Belém do Pará, Brazil, 22-26 September 2025, also integrated in the NewFunFiCO network.
Strong Gravity News & Events
Quantum fermion superradiance in charged black holes
Speaker
Álvaro Álvarez-Domínguez (Universidad Complutense de Madrid & IPARCOS)
Event date
Venue
Hybrid: room 11.2.23 and Zoom
Event type
In contrast to a classical charged bosonic field, a classical charged fermionic field does not exhibit superradiant scattering when placed in the background of a static charged black hole. However, we show that a quantum version of this effect does occur.
NewFunFiCO workshop in Valencia
Members of the NewFunFiCO network got together in Valencia from 20-22 May 2025 to discuss many aspects related to compact objects and fundamental fields. Truly enjoyable meeting. Thank you to the Valencia group, especially Nico Sanchis-Gual for the great meeting.
Hosting collegues
In the first half of May 2025, Gr@v hosted many wonderful collegues, including Isabel Cordero (U. Valencia, Spain),
Stability of Boson Stars as Black Hole Mimickers
Speaker
Gareth Marks (University of Cambridge, Department of Applied Mathematics and Theoretical Physics)
Event date
Venue
Hybrid: room 11.2.25 and Zoom
Event type
We discuss recent results on using boson stars with a solitonic potential as models of ultracompact objects, which could mimic black holes in such phenomenology as VLBI images and gravitational wave signals.
Discussion of the paper "Quantum-gravity effects outside the horizon spark black to white hole tunneling", by H. M. Maggard et al.
Speaker
Marco Brito (U. Aveiro)
Event date
Venue
Hybrid: Room 11.2.21 Pinto and Zoom
Ends on
Event type
Quantum-gravity effects outside the horizon spark black to white hole tunneling
Hal M. Haggard(Marseille, CPT and Bard Coll.), Carlo Rovelli(Marseille, CPT)
Towards a non-singular paradigm for black hole physics
Speaker
Francesco Di Filippo (Goethe University Frankfurt)
Event date
Venue
Hybrid: room 11.2.21 and Zoom
Event type
The study of regular black holes and black hole mimickers as alternatives to standard black holes has recently gained significant attention, driven both by the need to extend general relativity to describe black hole interiors, and by recent advances in observational technologies.
Gonçalo Gonçalves
Full Name: Goncalo Filipe Mota Goncalves
Postion: PhD Student
Degrees: Msc in Theoretical Physics, Faculty of Sciences of the University of Porto, 2024; BSC in Physics, Faculty of Sciences of the University of Coimbra, 2021
Visual Signatures of Scalar Hair in the Images of Accretion Disks and Shadows of Rotating Hairy Black Holes
Speaker
Galin Gyulchev (Sofia University “St. Kliment Ohridski”)
Event date
Venue
Hybrid: room 10.3.7 (DEGEIT) and Zoom
Event type
We examine the images and shadows of thin accretion disks around rotating hairy black holes characterized by two non-trivial, time-periodic scalar fields, whose target space possesses non-flat Gaussian curvature.
Visit of Laura Bernard
Laura Bernard visited us in the beginning of April 2025. Thank you for the visit and seminar Laura!