Speaker
Description
Massive bosonic fields can form confined structures, held together by their own gravity, known as boson stars, in the case of scalar fields, or Proca stars, in the case of vector fields. Such bosonic structures have been proposed as possible “dark matter stars” and, for ultralight fields, have been shown to be a good description of dark matter haloes. If such stars are sufficiently massive, small compact objects orbiting around them could be detected due to gravitational-wave emission. The aim of this thesis will be precisely to study binary systems in which a small stellar compact object orbits a supermassive bosonic star. In particular, the final goal will be to study extreme mass-ratio inspirals into Proca stars, and compare the results to the case where the central object is a boson star or a black hole.
