Strong Gravity News & Events

Great COST Advanced School on the physics of dark matter and the hidden sector, at Lund, Sweeden, co-organized by A. Morais. In the photo the Gr@v team members that attended the school with some close collaborators.

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.

I summarize theoretical findings, astrophysical modeling, and current gravitational-wave evidence of hierarchical stellar-mass black-hole mergers.

P. Cunha was one of the invited speakers of the workshop "Regular black holes in quantum gravity and beyond: from theory to shadow observations", held from October 18-21, 2021.

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 warp drive: hyper-fast travel within general relativity
Miguel Alcubierre
Class. Quant. Grav. 11 (1994) L73-L77

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.

Axially symmetric Proca-Higgs stars
Vladimir Dzhunushaliev, and Vladimir Folomeev
arXiv:2109.11138 [gr-qc]

Gr@v Journal Clubs for 2021/22 have started. Researchers/students from other groups/institutions wanting to attend (they are online) feel free to contact us.