SPECIAL ISSUE – VII Black Holes Workshop; Guest Editors: Carlos A. R. Herdeiro, Vitor Cardoso, José P. S. Lemos and Filipe C. MenaNo Access
Stationary bound states of massless scalar fields around black holes and black hole analogues
Abstract
We discuss stationary bound states, a.k.a. clouds, for a massless test scalar field around Kerr black holes (BHs) and spinning acoustic BH analogues. In view of the absence of a mass term, the trapping is achieved via enclosing the BH — scalar field system in a cavity and imposing Dirichlet or Neumann boundary conditions. We discuss the variation of these bounds states with the discrete parameters that label them, as well as their spatial distribution, complementing results in our previous work [C. L. Benone, L. C. B. Crispino, C. Herdeiro and E. Radu, Phys. Rev. D91 (2015) 104038].
PACS: 04.50.-h, 04.50.Kd, 04.20.Jb
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Published: 17 June 2015
