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

Non-linear dynamics of spinning bosonic stars: formation and stability, N. Sanchis-Gual, F. Di Giovanni, M. Zilhão, C. Herdeiro, P. Cerdá-Durán, J. A. Font and E. Radu; arXiv:1907.12565 [gr-qc].

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Regular Articles
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Spontaneously Scalarized Kerr Black Holes in Extended Scalar-Tensor–Gauss-Bonnet Gravity, P. V. P. Cunha, C. A. R. Herdeiro and E. Radu; Phys. Rev. Lett. 123 (2019) no.1, 011101, arXiv:1904.09997 [gr-qc]. Featured on the cover of Volume 123, Issue 1 of Physical Review Letters (3 July 2019).

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Regular Articles
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Spontaneous scalarisation of charged black holes: coupling dependence and dynamical features, , , , and ; Class. Quant. Grav. 36 (2019) 134002, arXiv:1902.05079 [gr-qc].

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Regular Articles
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Asymptotically flat spinning scalar, Dirac and Proca stars, C. Herdeiro, I. Perapechka, E. Radu and Y. Shnir;  arXiv:1906.05386 [gr-qc].

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Einstein-Maxwell-scalar black holes: classes of solutions, dyons and extremality, D. Astefanesei, C. Herdeiro, A. Pombo and E. Radu; arXiv:1905.08304 [hep-th].

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Regular Articles
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Latest Strong Gravity News & Events

Optical Geometry and Constructive Gravity

Speaker
Marcus Werner (IPMU, Japan)
Event date
Venue
Venue Maths. Dept. Room Sousa Pinto
Ends on
Event type

Gravitational lensing provides an important probe of the background geometry.
In this talk, I discuss light propagation on non-Lorentzian backgrounds which
arise in two different contexts. Firstly, we consider optical geometry, which
is a formalism in 3-space for light propagation in Lorentzian spacetimes: