Strong Gravity research at Perimeter Institute is devoted to understanding both the theoretical and observational aspects of systems in which gravity is very strong (i.e., spacetime is highly curved or dynamical],. On one hand, this means studying extreme astrophysical systems, like black holes and neutron stars, as well as making and testing predictions for existing and forthcoming gravitational wave detectors, electromagnetic telescopes, and particle astrophysics experiments. On the other hand, it also includes a range of nonastrophysical topics, such as the instabilities of higherdimensional black holes or the dynamics of stronglycoupled quantum field theories (via holography). The goal of strong gravity researcher is to test the validity of Einstein's theory of gravity, constrain proposed alternatives, understand the most extreme astrophysical systems, and investigate the ways in which highly curved or dynamical spacetimes are linked with a range of other problems in fundamental physics.
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Universidade Federal do ABC

Scalar fields in strong gravity: black holes, neutron stars and wormholes
University of Nottingham 
Horizon entropy and the Einstein equation  Lecture 20230302
University of Maryland, College Park 
Horizon entropy and the Einstein equation  Lecture 20230228
University of Maryland, College Park 
Horizon entropy and the Einstein equation  Lecture 20230223
University of Maryland, College Park 
Horizon entropy and the Einstein equation  Lecture 20230221
University of Maryland, College Park 
Formation of Primordial black hole during the QCD phasetransition
Sapienza University of Rome 
Probing extreme configurations in binary compact object mergers
Goethe University Frankfurt 
Beyond the linear tide: impact of the nonlinear tidal response of neutron stars on gravitational waveforms from binary inspirals
California Institute of Technology (Caltech)  Division of Physics Mathematics & Astronomy 
Spin Signatures in VLBI Images of Supermassive Black Hole Accretion Flows
Harvard University 
On dissipation in relativistic fluid theories
Princeton University 