Fabio Riccioni
(Istituto Nazionale di Fisica Nucleare)
11/16/24, 9:30 AM
We review how the vacuum metric generated by a generic rotating object is determined by computing the classical contribution of scattering amplitudes describing the graviton emission by massive particles with spin. By focusing on the case of spin 1, In D = 4 spacetime dimensions we recover the vacuum Hartle-Thorne solution describing a generic spinning object to second order in the angular...
Alexandru Dima
(Istituto Nazionale di Fisica Nucleare)
11/16/24, 10:15 AM
We present results on the linear response of four dimensional regular topological stars arising from Einstein-Maxwell theory in five dimensions. We discuss the stability of these solutions under both radial and nonradial perturbations, and the potential observational signatures of these objects.
