Gravitational waves from exotic compact objects
Speaker: Thomas Helfer (KCL)
We use numerical relativity to investigate the nature of strongly gravitating objects: cosmic strings and Oscillotons, and determine ways of detecting them using current and future gravitational wave detectors. First, we study the collisions of Oscillotons, quasi-stable, localised solutions of a real massive scalar field minimally coupled to the Einstein Field equations. We discuss their formation, end-of-life and emitted signals in a merger.
Second, we study the physics of Abelian-Higgs cosmic strings which are topological defects that might have formed in the very early universe. We simulate the collapse of a cosmic strings loop which can either disperse or form a black hole. For the latter case we could generate a gravitational wave signal.