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

Stationary black holes and light rings, Pedro V. P. Cunha, Carlos A. R. Herdeiro; arXiv:2003.06445 [gr-qc].

Publication type
Regular Articles
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Spinning black holes in shift-symmetric Horndeski theory, Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu;  arXiv:2002.050123 [gr-qc].

Publication type
Regular Articles
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Einstein-Maxwell-scalar black holes: the hot, the cold and the bald, Jose Luis Blázquez-Salcedo, Carlos A. R. Herdeiro, Jutta Kunz, Alexandre M. Pombo, Eugen Radu; arXiv:2002.00963 [gr-qc].

Publication type
Regular Articles
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Lensing and shadow of a black hole surrounded by a heavy accretion disk, P. V. P. Cunha, N. A. Eiró, C. A. R. Herdeiro and J. P. S. Lemos; JCAP 03 (2020) 035, arXiv:1912.08833 [gr-qc].

Publication type
Regular Articles
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Dynamically and thermodynamically stable black holes in Einstein-Maxwell-dilaton gravity, D. Astefanesei, J. L. Blázquez-Salcedo, C. Herdeiro, E. Radu and N. Sanchis-Gual; arXiv:1912.02192 [gr-qc].

Publication type
Regular Articles
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See Strong Gravity publications

Latest Strong Gravity News & Events

Can electromagnetic interaction revive (collisional) Penrose process?

Speaker
Filip Hejda (IST-Lisbon)
Event date
Venue
Maths. Dept. Room 11.3.21
Event type
Seminars

Penrose process remains a textbook example of a mechanism for energy extraction from black holes, yet there are many impediments to its practical viability. The longest known problem is that it requires a particle to split into two fragments with very high relative velocity.

Strong Gravity
See Strong Gravity News & Events