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arXiv · 1611.01431

The Link Between the Local Bubble and Radioisotopic Signatures on Earth

Jenny Feige·Dieter Breitschwerdt·Anton Wallner·Michael M. Schulreich·Norikazu Kinoshita·Michael Paul·Christian Dettbarn·L. Keith Fifield·Robin Golser·Maki Honda·Ulf Linnemann·Hiroyuki Matsuzaki·Silke Merchel·Georg Rugel·Peter Steier·Stephen G. Tims·Stephan R. Winkler·Takeyasu Yamagata
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Abstract

Traces of 2-3 Myr old 60Fe were recently discovered in a manganese crust and in lunar samples. We have found that this signal is extended in time and is present in globally distributed deep-sea archives. A second 6.5-8.7 Myr old signature was revealed in a manganese crust. The existence of the Local Bubble hints to a recent nearby supernova-activity starting 13 Myr ago. With analytical and numerical models generating the Local Bubble, we explain the younger 60Fe-signature and thus link the evolution of the solar neighborhood to terrestrial anomalies.

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Jenny Feige, Dieter Breitschwerdt, Anton Wallner, Michael M. Schulreich, Norikazu Kinoshita, Michael Paul, Christian Dettbarn, L. Keith Fifield, Robin Golser, Maki Honda, Ulf Linnemann, Hiroyuki Matsuzaki, Silke Merchel, Georg Rugel, Peter Steier, Stephen G. Tims, Stephan R. Winkler, Takeyasu Yamagata. 2016-11-04. The Link Between the Local Bubble and Radioisotopic Signatures on Earth. https://doi.org/10.7566/jpscp.14.010304

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