A topological string is a fundamental prediction of many theoretical field models, including grand-unified and superstring theories. Here, the evolution of a global cosmic string is simulated, particularly its emission due to oscillation. This visualization shows "massive" radiation from such a string, traced through a diagnostic parameter of the real momenta. It exhibits a 3D dipole signal with a dominant propagating dipole eigenmode, although the outgoing wavepackets have additional structure.
Methods: numerical relativity code GRChombo + paraview