Colloquia IFIC - Severo Ochoa

Kilonova: an electromagnetic signal of heavy element nucleosynthesis

por Prof. Gabriel Martínez-Pinedo (GSI Helmholtzzentrum für Schwerionenforschung and Institut für Kernphysik (Theoriezentrum), Technische Universität Darmstadt)

Europe/Madrid
Universe

Universe

Descripción
On August 17th 2017, the LIGO/VIRGO collaborations detected the gravitational signal GW170817 originating from a  merger of two neutron stars. Shortly after an electromagnetic signal with an intrinsic brightness corresponding to thousand novas was detected by several telescopes worldwide lasting around a week. This kilonova signal has been predicted by theory long before and originates from the radioactive decay of freshly synthesized radioactive heavy nuclei produced by the r process. Hence, it answers one of the long lasting questions in nuclear astrophysics related to the astrophysical site of the r process. In this talk, I will summarize our current understanding of the r process, the answers provided by the recent observations and the remaining open questions.
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