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Head-on collisions and orbital mergers of Proca stars

Starts at:Tue 12 Feb 2019, 16:00
Speaker:Nicolas Sanchis-GualInstitute:

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.

Room:Seminarraum 0.01
Contact: Matthias Blittersdorf