Compact objects occupy a pivotal role in the exploration of Nature. The interest spans from
the role of compact objects in astrophysics to their detection through various methods …

The idea of stable, localized bundles of energy has strong appeal as a model for particles. In
the 1950s, John Wheeler envisioned such bundles as smooth configurations of …

The birth of gravitational wave astronomy was triggered by the first detection of a signal
produced by the merger of two compact objects (also known as a compact binary …

Scalar boson stars have attracted attention as simple models for exploring the nonlinear
dynamics of a large class of ultracompact and black hole mimicking objects. Here, we study …

We study the stability of rotating scalar boson stars, comparing those made from a simple
massive complex scalar (referred to as mini boson stars), to those with several different …

General relativity predicts that black holes are described by the Kerr metric, which has
integrable geodesics. This property is crucial to produce accurate waveforms from extreme …

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 …

Light bosonic (axionlike) dark matter may form Bose stars—clumps of nonrelativistic Bose-
Einstein condensate supported by self-gravity. We study rotating Bose stars composed of …

General relativity minimally coupled to a massive, free, complex scalar field, is shown to
allow asymptotically flat solutions, nonsingular on and outside the event horizon, describing …