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

Full 3D nonlinear dynamics of charged and magnetized boson stars, V. Jaramillo, D. Núñez, M. Ruiz, M. Zilhão; arXiv:2411.07284 [gr-qc].

Publication type
Regular Articles
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Darkness cannot bind them: a no-bound theorem for d=5 Myers-Perry null geodesics, J. P. A. Novo; arXiv:2411.02511 [gr-qc].

Publication type
Regular Articles
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Breaking the north-south symmetry: dyonic spinning black holes with synchronized gauged scalar hair, P. V. P. Cunha, C. A. R. Herdeiro, E. Radu, N. M. Santos; arXiv:2410.21421 [gr-qc]

Publication type
Regular Articles
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Black Holes Inside and Out 2024: visions for the future of black hole physics, N. Afshordi et al. (w/ C. A. R. Herdeiro); arXiv:2410.14414 [gr-qc]

Publication type
Proceedings
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Black holes in scalar multipolar Universes, C. A. R. Herdeiro; arXiv:2410.12950 [gr-qc]

Publication type
Regular Articles
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Latest Strong Gravity News & Events

TBA

Speaker
Jianzhi Yang (U. Aveiro)
Event date
Venue
Hybrid: Room Sousa Pinto and Zoom
Ends on
Event type

Testing General Relativity with Extreme Mass Ratio Inspirals

GGD - Gr@V Seminar
Speaker
Susanna Barsanti (University College Dublin)
Event date
Venue
On-site: Sala Sousa Pinto
Event type
Extreme Mass Ratio Inspirals (EMRIs) - asymmetric binary systems composed by a stellar mass compact object inspiralling into a massive black hole - are promising candidates for probing new fundamental physics.

New post-Newtonian results for compact binaries in general relativity and scalar-tensor theories

GGD - Gr@V Seminar
Speaker
David Trestini (University of Southampton)
Event date
Venue
Online (Zoom)
Event type

In the first part of my talk, I give on overview of some recent results concerning the two-body problem in general relativity at high post-Newtonian (PN) order. I will present the energy flux at 4.5PN order, the equations of motion at 4.5PN order, and the memory contributions to the 3.5PN order waveform.

Discussion of the paper "Impact of theoretical uncertainties on model parameter reconstruction from GW signals sourced by cosmological phase transitions", by Marek Lewicki, et al.

Speaker
João Pedro Pino (U. Aveiro)
Event date
Venue
Hybrid: Room Sousa Pinto and Zoom
Ends on
Event type

Impact of theoretical uncertainties on model parameter reconstruction from GW signals sourced by cosmological phase transitions

Marek Lewicki, Marco Merchand, Laura Sagunski, Philipp Schicho, Daniel Schmitt