3 papers
gr-qc2026
Dark matter and modified gravity: Einstein clusters from a non-minimally coupled vector field
Pedro G. S. Fernandes, Vitor Cardoso
We show that a vector field non-minimally coupled to gravity reproduces exactly the dynamics of an Einstein cluster -- a large ensemble of non-interacting particles moving on circu…
gr-qc2026
Ringing of rapidly rotating black holes in effective field theory
Tom van der Steen, Simon Maenaut, Stef J. B. Husken +5
Within the effective field theory approach to gravity, deviations from general relativity can be systematically described by higher-curvature operators. However, computing the resu…
gr-qc2025
Spinning black holes in astrophysical environments
Pedro G. S. Fernandes, Vitor Cardoso
We present stationary and axially-symmetric black hole solutions to the Einstein field equations sourced by an anisotropic fluid, describing rotating black holes embedded in astrop…