Time-resolved 2-million-year-old supernova activity discovered in Earth’s microfossil record

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Time-resolved 2-million-year-old supernova activity discovered in Earth's microfossil record.

Massive stars ([Formula: see text]), which terminate their evolution as core-collapse supernovae, are theoretically predicted to eject [Formula: see text] of the radioisotope (60)Fe (half-life 2.61 Ma). If such an event occurs sufficiently close to our solar system, traces of the supernova debris could be deposited on Earth. Herein, we report a time-resolved (60)Fe signal residing, at least par...

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ژورنال

عنوان ژورنال: Proceedings of the National Academy of Sciences

سال: 2016

ISSN: 0027-8424,1091-6490

DOI: 10.1073/pnas.1601040113