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HK: Fachverband Physik der Hadronen und Kerne
HK 47: Invited Talks
HK 47.1: Hauptvortrag
Freitag, 20. März 2026, 09:00–09:30, MED 00.915
Supernova signatures on Earth and beyond — •Jenny Feige — Museum für Naturkunde, Berlin, Germany
The detection of cosmic signatures in deep-sea, ice, and lunar samples has made an important contribution to nuclear astrophysics in recent years. In particular, 60Fe from near-Earth supernovae has been imprinted during the time periods 2-3 and 7-8 Myr ago, together with 244Pu, which is produced exclusively by the rapid neutron capture process. These data, which establish a link between supernovae and the r-process, add another piece to the puzzle of the possible r-process sites.
This data also corroborates theoretical studies that suggest that more than 10 SNe exploded at a distance of 50-150 pc over the last 10-15 Myr. Their overriding shock fronts created a volume of hot gas that is seen in observational data and referred to as the Local Bubble, which currently engulfs our Solar System.
Here, I review the advancements made during the recent years in (1) the detection of different interstellar radioisotopes in deep-ocean and terrestrial records, and (2) what these detections reveal on the nature of the interstellar matter our Solar System encountered in the past.
Keywords: supernova; local bubble; accelerator mass spectrometry; interstellar medium; radionuclide