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

Shadows of Exact binary black holes, Pedro V. P. Cunha, Carlos A. R. Herdeiro, Maria J. Rodriguez;  arXiv:1805.02798 [gr-qc].

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Regular Articles
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Horizon geometry for Kerr black holes with synchronised hair, Jorge F. M. Delgado, Carlos Herdeiro, Eugen Radu; Accepted in Phys. Rev. D (2018), arXiv:1804.04910 [gr-qc].

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Regular Articles
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An analytic effective model for hairy black holes, Yves Brihaye, Thomas Delplace, Carlos Herdeiro, Eugen Radu; Accepted in Phys. Lett. B (2018), arXiv:1803.09089 [qr-qc].

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Regular Articles
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Spinning boson stars and hairy black holes with non-minimal coupling, Carlos A. R. Herdeiro, Eugen Radu; International Journal of Modern Physics D 27 (2018) 1843009, arXiv:1803.08149 [gr-qc].

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Regular Articles
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Dynamical formation of Proca stars and quasi-stationary solitonic objects, Fabrizio Di Giovanni, Nicolas Sanchis-Gual, Carlos A. R. Herdeiro, José A. Font; arXiv:1803.04802 [gr-qc].

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Regular Articles
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Latest Strong Gravity News & Events

Shadows of a quasi-static Black Hole binary


Black hole (BH) shadows in dynamical binary BHs have been produced via ray-tracing techniques on top of computationally expensive fully non-linear numerical relativity simulations.

On arXiv:1805.03798 [gr-qc], it is illustrated (as a proof of concept) that the main features of these shadows can be captured by a simple quasi-static evolution of the photon orbits on top of a static double-Schwarzschild family of solutions, which is exact.

Gr@v visits UNAM

A team of Gr@v members (P. Cunha, J. Delgado, C. Herdeiro and J. Oliveira) is visiting the Universidad Nacional Autónoma de México, at its Cuernava Campus, in April-May 2018 hosted by Professor Juan Carlos Degollado. The visit occurs within a Marie Curie RISE action, of which both UNAM and Aveiro Universities are partners.