Darmstadt 2016 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 4: Nuclear Astrophysics I
HK 4.1: Group Report
Monday, March 14, 2016, 14:00–14:30, S1/01 A02
Nucleosynthesis in Neutron Star Mergers: insights from astrophysical conditions and nuclear physics input⋆ — •Dirk Martin1 and Almudena Arcones1,2 — 1Institut für Kernphysik, TU Darmstadt, Germany — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany
Half of the elements heavier than iron are created by the rapid neutron capture process (r-process). Neutron star mergers present the most promising astrophysical site for the r-process, being both an explosive and extremely neutron-rich scenario.
We investigate the nucleosynthesis of matter ejected in different channels [1].
Furthermore, we study the impact of nuclear masses on the yields. Using masses obtained with six Skyrme energy density functionals [2], we determine systematic uncertainty bands for r-process abundances and discuss how details of the underlying microphysics can lead to abundance peaks and troughs [3].
[1] D. Martin et al., ApJ 813 (2015) 2.
[2] J. Erler et al., Nature 486 (2012) 509.
[3] D. Martin et al., submitted to PRL (2015).
⋆ Supported by the Helmholtz-University Young Investigator grant No. VH-NG-825 and by the BMBF under grant No. 05P15RDFN1. DM is a member of the HGS-HIRe graduate school.