60Fe anomaly in a deep-sea manganese crust and implications for a nearby supernova source -: art. no. 171103

被引：192

作者：

Knie, K

Korschinek, G

Faestermann, T

Dorfi, EA

Rugel, G

Wallner, A

机构：

[1] Tech Univ Munich, Fak Phys, D-85747 Garching, Germany

[2] Univ Vienna, Inst Astron, A-1180 Vienna, Austria

[3] Univ Munich, Inst Strahlenbiol, D-80336 Munich, Germany

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.93.171103

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A nearby supernova (SN) explosion in the past can be confirmed by the detection of radioisotopes on Earth that were produced and ejected by the SN. We have now measured a well resolved time profile of the Fe-60 concentration in a deep-sea ferromanganese crust and found a highly significant increase 2.8 Myr ago. The amount of Fe-60 is compatible with the deposition of ejecta from a SN at a distance of a few 10 pc. The well defined time of the SN explosion makes it possible to search for plausible correlations with other events in Earth's history.

引用

页码：171103 / 1

页数：4

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