70 AIM, UMR 7158, CEA/DRF, CNRS, Université Paris Diderot, Irfu/Service d'Astrophysique,
Centre de Saclay, FR-91191 Gif-sur-Yvette, France

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 …

There is accumulating evidence that (fundamental) scalar fields may exist in nature. The
gravitational collapse of such a boson cloud would lead to a boson star (BS) as a new type …

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 …

In the spherically symmetric case, the dominant energy condition, together with the
requirement of regularity at the centre, asymptotic flatness and finiteness of the ADM mass …

We formulate the requirements which lead to the existence of a class of globally regular
solutions of the minimally coupled GR equations asymptotically de Sitter at the center. The …

We explore whether supermassive nonbaryonic stars (in particular boson, miniboson, and
nontopological soliton stars) might be at the center of some galaxies, with special attention …

Through numerical simulations of boson-star head-on collisions, we explore the quality of
binary initial data obtained from the superposition of single-star spacetimes. Our results …

Simulations of binary collisions involving compact objects require initial data that satisfy the
constraint equations of general relativity. For binary boson star simulations it is common …

The present surge for the astrophysical relevance of boson stars stems from the speculative
possibility that these compact objects could provide a considerable fraction of the non …