Both for studies of cosmic censorship and for practical purposes in gravitational wave astronomy, it is desirable to include future null-infinity in the computational domain. Extending formulations of general relativity known to behave well in the strong-field regime out to infinity with compactification is, however, a subtle game.
Despite the plethora of evidence of the existence and abundance of dark matter we have from large scale cosmological observations, there is still little we know of its properties or its behaviour on small scales. A promising way to test this is through the effects it may have on the gravitational wave signal from black hole binary mergers.
Are you interested in doing research in topics such as black hole physics/mathematics, gravitational waves, numerical relativity, cosmology and high energy particle physics? Do you have (or are you finishing) a M.Sc. degree in Physics or Maths?
If so, and you would like pursue a PhD at Gr@v, there's a few steps you need to follow.
The observation of the shadow of the supermassive black hole M87∗ by the Event Horizon Telescope (EHT) is sensitive to the spacetime geometry near the circular photon orbit and beyond, and it thus has the potential to test general relativity in the strong field regime.
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized: