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GR: Fachverband Gravitation und Relativitätstheorie
GR 3: Relativistic Astrophysics
GR 3.2: Vortrag
Montag, 30. März 2020, 16:45–17:00, H-HS IX
Hypermassive hybrid stars within the phase diagram of QCD — •Matthias Hanauske1,2, Horst Stöcker1,2, and Luciano Rezzolla1,2 — 1Frankfurt Institute for Advanced Studies — 2Institut für Theoretische Physik, Frankfurt, Germany
Hypermassive hybrid stars (HMHS) are extreme astrophysical objects. In contrast to hypermassive neutron stars (HMNS) these highly differentially rotating objects contain deconfined strange quark matter in their slowly rotating inner region. HMHS and HMNS are formed in a binary neutron star merger event and can survive only a view seconds. During the inspiral, merger and post-merger evolution of the system, gravitational waves (GW) are emitted and the measured GW GW170817 has verified this picture impressively for the late inspiral phase. GWs, emitted from merging neutron star binaries, will be observed frequently within the coming years and it is therefore needful to understand the main characteristics of the underlying merging system in order to predict the expected GW signals. The appearance of a QCD-phase transition in the interior region of the HMHS and its conjunction with the spectral properties of the emitted GW will be addressed during this talk.