Abstract The Event Horizon Telescope (EHT) Collaboration recently published the first
images of the supermassive black holes in the cores of the Messier 87 and Milky Way …

We construct and explore the physical properties of scalaroca stars: spherically symmetric
solitonic solutions made of a complex scalar field Φ and a complex Proca field A μ. We …

Massive vector fields feature in several areas of particle physics, eg, as carriers of weak
interactions, dark matter candidates, or an effective description of photons in a plasma. Here …

In this work we derive simple closed-form expressions for the dynamical friction acting on
black holes moving through ultralight (scalar field) dark matter, covering both nonrelativistic …

We investigate the gravitational lensing by spinning Proca stars and the shadows and
lensing by Kerr black holes (BHs) with synchronised Proca hair, discussing both theoretical …

We present a systematic study of the dynamics and gravitational-wave emission of head-on
collisions of spinning vector boson stars, known as Proca stars. To this aim we build a …

Abstract We consider a Proca-Higgs model wherein a complex vector field gains mass via
spontaneous symmetry breaking, by coupling to a real scalar field with a Higgs-type …

We present the first systematic search for exotic compact mergers in Advanced LIGO and
Virgo events. We compare the short gravitational-wave signals GW190521, GW200220 and …

Self-gravitating non-topological solitons whose potential admits multiple vacua are
promising candidates for exotic compact objects. Such objects can arise in several …

We present several high-accuracy surrogate models for gravitational-wave signals from
equal-mass head-on mergers of Proca stars, computed through the Newman-Penrose …