SMuK 2023 – scientific programme
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GR: Fachverband Gravitation und Relativitätstheorie
GR 12: Relativistic Astrophysics and Scalar Fields
GR 12.3: Talk
Thursday, March 23, 2023, 14:40–15:00, ZEU/0260
Boson star head-on collisions — •Florian Atteneder1, Daniela Cors1, Hannes Rüter2, Roxana Rosca-Mead1, David Hilditch3, and Bernd Brügmann1 — 1Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena — 2CFisUC, Department of Physics, University of Coimbra — 3CENTRA, Instituto Superior Tecnico, The University of Lisbon
Colliding boson stars (BS) can be regarded as one potential source for astrophysical gravitational wave signals. Templates for the detection of such signals are now being constructed, which makes accurate calculations of such more important. In contrast to fluid matter, BS solutions are smooth, which makes them, in some sense, an optimal domain for the application of pseudospectral numerical methods. Simulations so far have been limited due to the difficulty in building initial data containing two BSs. Most groups undergoing such studies either use a simple superposition of two boosted BSs or an improved version thereof. In this talk I will present first results of BS head-on collisions that start from constraint solved initial data.