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HK: Fachverband Physik der Hadronen und Kerne
HK 47: Nuclear Astrophysics I
HK 47.5: Vortrag
Donnerstag, 2. April 2020, 15:15–15:30, J-HS B
A study of r-process nucleosynthesis in the aftermath of a binary neutron star merger — •Stylianos Nikas1,2, Gabriel Martinez Pinedo1,2, André Sieverding Sieverding5, and Meng-Ru Wu3,4 — 1GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany — 2Institut für Kernphysik (Theoriezentrum), Technische Universität Darmstadt,Schlossgartenstraße 2, 64289 Darmstadt, Germany — 3Institute of Physics, Academia Sinica, Taipei 11529, Taiwan — 4Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan — 5School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
The r-process is thought to create about half of elements heavier than Fe. The site of the r-process was unknown until recently. The detection of the electromagnetic radiation following the gravitational wave event GW170817 in addition to the detection of Sr in the electromagnetic spectrum established neutron star mergers as a site where heavy elements are created.
We perform a nucleosynthesis study for the creation of the first r-process peak elements determining the astrophysical conditions under which the peak is produced. Based on those conditions we determine the nuclear properties that affect the abundance pattern.
This work was supported by DFG through - Projektnummer 279384907 - SFB 1245 and HGS-HIRe