![](https://maths.ucd.ie/relativity/wp-content/uploads/2019/07/Kerr_orbit3.png)
The UCD Relativity group use Einstein’s theory of General Relativity to study black holes and other sources of gravitational waves. A major focus of the group is using Black Hole Perturbation Theory to model small mass ratio binaries. These are key sources for the forthcoming European Space Agency’s LISA mission. The group are full members of the LISA consortium and are lead developers of the Black Hole Perturbation Toolkit.