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

Reissner-Nordström dyonic black holes with gauged scalar hair, C. Herdeiro, E. Radu, Y. Shnir; arXiv:2406.10643 [hep-th].

Publication type
Regular Articles
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 Universal Relations for Rotating Scalar and Vector Boson Stars, C. Adam, J. C. Mourelle, E. S. C. Filho, C. A. R. Herdeiro, A. Wereszczynski; arXiv:2406.07613 [gr-qc].

Publication type
Regular Articles
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 Spinning Proca-Higgs balls, stars and hairy black holes, C. Herdeiro, E. Radu, E. S. Costa Filho; arXiv:2404.03552 [gr-qc].

Publication type
Regular Articles
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Static boson stars in the Einstein-Friedberg-Lee-Sirlin theory and their astrophysical images, P. L. Brito de Sá, H. C. D. Lima Jr., C. A. R. Herdeiro, L. C. B. Crispino; arXiv:2406.02695 [gr-qc].

Publication type
Regular Articles
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In this webpage you can find supplementary numerical data accompanying the article "Analytical proxy to families of numerical solutions: the case study of spherical mini-boson stars", by Jianzhi Yang, Pedro V. P. Cunha and Carlos A. R. Herdeiro [to appear soon]. Please consult the article for further details.

 

You can download the data by clicking on the following link:

http://gravitation.web.ua.pt/sites/default/files/2024-05/spacetime_data_0.zip

 

Please notice that some web browsers might attempt to block the download of .zip files.

The file spacetime_data.zip (linked above) contains two folders, each representing a continuous family of mini-Boson Star solutions. These families are referred to as Region A and Region B in the article.

Each folder contains a .txt file with the spacetime coefficient data. Each line in this file has five columns of information in the following order:

i,   j ,   C0ij ,   C1ij ,    C2ij 

The indices  i,j  specify the spacetime coefficients C0ij , C1ij , C2ij , defined in the article.

Furthermore, each folder includes a Wolfram Mathematica Notebook designed to easily process the .txt data file, providing users with convenient access to the data.

Publication type
Computational resources
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Latest Strong Gravity News & Events

12 million CPU-hours awarded to our group

grants
A computing proposal prepared by S. Gimeno-Soler, P. Cunha, I. Sengo and C. Herdeiro, and led by H. Olivares was awarded with 12 million CPU-hours at the supercomputer Mare Nostrum 5.
The project, titled "Exploring accretion and spacetime models for event-horizon-scale observations of low-luminosity active galactic nuclei", will explore new models of accretion flows and spacetime geometries for the targets of the Event Horizon Telescope using simulations as the one shown in the picture (Image credit: H. Olivares and P. Cunha).
Strong Gravity
Cosmology
High Energy Physics
Astrophysics
See Strong Gravity News & Events