Strong Gravity

The group's research on strong gravity involves finding analytical and numerical solutions of Einstein's theory of general relativity, and many of its extensions, either in vacuum or coupled to various types of matter. For our latest developments/activities in this area, please see the listing at the end of this article.

The prime examples of (relativistic) strong gravitational systems are Black Holes. They are truly unifying objects of all physics. The understanding of their formation and dynamics requires the laws of all four fundamental forces, and their physics is relevant not only for astrophysics and cosmology but for a variety of topics within high energy physics.

See here a movie made by the COST action `Black holes in a violent universe', in which our group participates, for a visual overview of different types of black holes.

Latest Strong Gravity Publications

Spherical Einstein-Friedberg-Lee-Sirlin boson stars: Self-interacting solutions and their astrophysical appearance, P. L. Brito de Sá, H. C. D. Lima, C. A. R. Herdeiro, L. C. B. Crispino; arXiv:2511.19206 [gr-qc].

Publication type
Regular Articles
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Noncommutative dyonic black holes sourced by nonlinear electromagnetic fields, A. Bokulić, F. Požar; arXiv:2511.01020 [gr-qc].

Publication type
Regular Articles
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Conundrum of regular black holes with nonlinear electromagnetic fields, A. Bokulić, T. Jurić, I. Smolić; arXiv:2510.23711 [gr-qc]

Publication type
Regular Articles
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Phantom scalar field with arbitrary potential: accelerating scaling attractors, S. Halder, S. Pan, P. M. Sá, T. Saha; arXiv:2510.17765 [gr-qc].

Publication type
Regular Articles
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Gravitational waves from two scalar fields unifying the dark sector with inflation, O. Luongo, T. Mengoni, P. M. Sá; arXiv:2509.21200 [gr-qc]

Publication type
Regular Articles
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See Strong Gravity publications

Latest Strong Gravity News & Events

New Aspects of spontaneous scalarization of black holes beyond General relativity

GGD - Gr@V Seminar
Speaker
Zakaria Belkhadria (Université de Genève/Università degli Studi di Cagliari)
Event date
Venue
Hybrid: Sala 11.2.21 and Teams
Event Website
https://teams.microsoft.com/l/meetup-join/19%3ameeting_MmZjYmYxOTgtMzIxYy00ODQx…
Event type
Seminars

Spontaneous scalarization is a mechanism that allows black holes to develop a non-trivial profile of a scalar field “scalar hair” because of tachyonic instabilities, enabling tests of gravity beyond General Relativity.

Strong Gravity
Astrophysics

How much can gravitons be squeezed?

GGD - Gr@V Seminar
Speaker
Panagiotis Dorlis (National Technical University of Athens (NTUA))
Event date
Venue
Hybrid: Sala Sousa Pinto and Teams
Event Website
https://teams.microsoft.com/l/meetup-join/19%3ameeting_ODhhZWI5MGItOWI3Zi00YzYx…
Event type
Seminars

Dyson, just before the first detection of Gravitational Waves (GWs) by LIGO, raised the question of whether the detection of a single graviton can be achieved with GW strain detectors. If this is possible, then it would be a direct evidence for the quantization of the gravitational field.

Strong Gravity
High Energy Physics
Astrophysics
Other

Discussion of the paper "A Black Hole is Born: 3D GRMHD Simulation of Black Hole Formation from Core-Collapse", by Goni Halevi al.

Speaker
Pedro Cunha (U. Aveiro)
Event date
Venue
Hybrid: Room Sousa Pinto and Microsoft Teams
Ends on
Event type
Journal Clubs

A Black Hole is Born: 3D GRMHD Simulation of Black Hole Formation from Core-Collaps

Goni Halevi, Swapnil Shankar, Philipp Mösta, Roland Haas, Erik Schnetter

arXiv:2506.20837 [gr-qc]
Strong Gravity
Astrophysics

Gr@v 15, GR 110, GW 10

group meeting

25-11-25 was a wonderful day of celebration of past achievements, present efforts, and future horizons. It was a true joy to see so many colleagues, collaborators, and friends—who have shaped, and continue to shape, the history, present, and future of Gr@v, gathered both online and onsite. Thank you to everyone who has contributed to the first fifteen years of Gr@v during this remarkable era of strong-gravity research. We look forward to the next fifteen years!

 

 

Strong Gravity
Cosmology
High Energy Physics
Astrophysics
See Strong Gravity News & Events