Acoustic black-hole bombs and scalar clouds in a photon-fluid model
Acoustic black-hole bombs and scalar clouds in a photon-fluid model
Massive bosonic fields in the background of a Kerr black hole can either trigger superradiant instabilities (black-hole bombs) or form equilibrium configurations corresponding to pure bound states, known as stationary scalar clouds. Here, similar phenomena are shown to emerge in the fluctuation dynamics of a rotating photon-fluid model. In the …