Max-Planck-Institut für Gravitationsphysik,   Albert-Einstein-Institut

## Head-on collisions and orbital mergers of Proca stars

 Starts at: Tue 12 Feb 2019, 16:00 Speaker: Nicolas Sanchis-Gual Institute: Abstract: Proca stars, aka vector boson stars, are self-gravitating Bose-Einstein condensates obtained as numerical stationary solutions of the Einstein-(complex)-Proca system. These solitonic objects can achieve a compactness comparable to that of black holes, thus yielding an example of a black hole mimicker, which, moreover, can be both stable and form dynamically from generic initial data by the mechanism of gravitational cooling. In a recent work we have explored the dynamical properties of these solitonic objects by performing both head-on collisions and orbital mergers of equal mass Proca stars, using fully non-linear numerical evolutions, and extracting the gravitational radiation. Tex-Document Seminartype: Ordinary Room: Seminarraum 0.01 Contact: Matthias Blittersdorf