7 papers
Static multipolar Einstein-vector-Gauss-Bonnet black holes
Burkhard Kleihaus, Jutta Kunz
We construct and analyze static multipolar black holes in Einstein-vector-Gauss-Bonnet theory with a quadratic coupling function. The vectorized solutions bifurcate from the Schwar…
Stationary Einstein-vector-Gauss-Bonnet black holes
Burkhard Kleihaus, Jutta Kunz
We study spontaneously vectorized black holes in Einstein-vector-Gauss-Bonnet theory with a quadratic coupling function. Besides the static, spherically symmetric black holes carry…
Boson Stars surrounded by Polish Doughnuts in Scalar-Tensor Theory
Kristian Gjorgjieski, Maxim Rose, Burkhard Kleihaus +2
We investigate thick accretion disks (Polish Doughnuts) around rotating self-interacting boson stars in general relativity and scalar-tensor theories, focusing on spontaneously sca…
Phase transitions of boson stars in scalar-tensor theories
Hyat Huang, Burkhard Kleihaus, Jutta Kunz +3
In scalar-tensor theories, compact objects may experience spontaneous scalarization. Recently, it was shown that matter-induced spontaneous scalarization of neutron stars is predom…
Quasinormal modes of rotating black holes in shift-symmetric Einstein-scalar-Gauss-Bonnet theory
Fech Scen Khoo, Jose Luis Blázquez-Salcedo, Burkhard Kleihaus +1
We employ a recently developed spectral method to obtain the spectrum of quasinormal modes of rapidly rotating black holes in alternative theories of gravity and apply it to the bl…
Quasinormal mode spectrum of rotating black holes in Einstein-Gauss-Bonnet-dilaton theory
Jose Luis Blázquez-Salcedo, Fech Scen Khoo, Burkhard Kleihaus +1
Quasinormal modes are excited during the ringdown phase of black holes after merger. Determination of quasinormal modes of rapidly rotating black holes in alternative theories of g…