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HK: Fachverband Physik der Hadronen und Kerne
HK 6: Nuclear Astrophysics I
HK 6.3: Vortrag
Montag, 10. März 2025, 15:45–16:00, SR 0.03 Erw. Physik
Hyperons in neutron star mergers — •Hristijan Kochankovski1,2, Sebastian Blacker3,4, Andreas Bauswein4,5, Angels Ramos2, Laura Tolos6,7,8, and Georgios Lioutas4 — 1Departament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos, Universitat de Barcelona, Martí i Franquès 1, 08028, Barcelona, Spain — 2Faculty of Natural Sciences and Mathematics-Skopje, Ss. Cyril and Methodius University in Skopje, Arhimedova, 1000 Skopje, Macedonia — 3Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany — 4GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany — 5Helmholtz Research Academy Hesse for FAIR (HFHF), Campus Darmstadt, 64291 Darmstadt, Germany — 6Institute of Space Sciences (ICE, CSIC), Campus UAB, Carrer de Can Magrans, 08193 Barcelona, Spain — 7Institut d’Estudis Espacials de Catalunya (IEEC), 08860 Castelldefels (Barcelona), Spain — 8Frankfurt Institute for Advanced Studies, Ruth-Moufang-Str. 1, 60438 Frankfurt am Main, Germany
We study the influence of hyperons on neutron star mergers. Using a large sample of hyperonic equations of state, we make a systematic analysis of their effects. We find that during the post-merger phase of the binary neutron star collision, the average temperature is lower and the maximum density of the hot medium to be higher when they are present in matter. In addition, we also study hyperonic imprints onto ejected mass, secondary peaks, and threshold mass before collapse are. Our findings are of special interest as a venue for answering the question of the composition of ultra dense matter.
Keywords: Hyperons; Equation of state; Binary neutron star merger