104 citations · 2k across the 128 of their papers we have counts for
3 papers · 1 filter
Photon rings and shadows of Kerr black holes immersed in a swirling universe
Rogério Capobianco, Betti Hartmann, Jutta Kunz +2
We discuss photon rings around as well as shadows of Kerr black holes immersed in a swirling spacetime (KBHSU). We find that the spin-spin interaction between the angular momentum…
Frozen states of charged boson stars
Yves Brihaye, Betti Hartmann
In this paper, we study frozen states of charged boson stars. These solutions are globally regular and exist in a U(1) gauged scalar field model minimally coupled to gravity for su…
Hairy charged black holes in a model with bounded scalar field potential
Yves Brihaye, Betti Hartmann, Katherine Horton
Electrically and magnetically charged (a.k.a. dyonic) black holes with scalar hair have recently been constructed for a sextic scalar field potential. Here, we re-investigate this…