149 citations · 333 across the 4 of their papers we have counts for
4 papers
Spinning boson stars and Kerr black holes with scalar hair: the effect of self-interactions
Carlos A. R. Herdeiro, Eugen Radu, Helgi F. Rúnarsson
Self-interacting boson stars have been shown to alleviate the astrophysically low maximal mass of their non-self-interacting counterparts. We report some physical features of spinn…
Kerr black holes with self-interacting scalar hair: hairier but not heavier
Carlos A. R. Herdeiro, Eugen Radu, Helgi Rúnarsson
The maximal ADM mass for (mini-)boson stars (BSs) -- gravitating solitons of Einstein's gravity minimally coupled to a free, complex, mass , Klein-Gordon field -- is $M_{\rm ADM…
Rapid growth of superradiant instabilities for charged black holes in a cavity
Carlos A. R. Herdeiro, Juan Carlos Degollado, Helgi Freyr Rúnarsson
Confined scalar fields, either by a mass term or by a mirror-like boundary condition, have unstable modes in the background of a Kerr black hole. Assuming a time dependence as $e^{…
Conformal isometry of the lukewarm Reissner-Nordström-de Sitter spacetime
Helgi Freyr Rúnarsson
It is known that the extremal Reissner-Nordström black hole possesses a discrete conformal isometry that exchanges the black hole horizon with infinity. It is also known that the R…