創世記からの太陽風ネオン:月の貴気ガス記録への意味合い
Ansgar Grimberg1, Heinrich Baur, Peter Bochsler
1Isotope Geology and Mineral Resources, ETH Zürich NW, Clausiusstrasse 25, CH-8092 Zürich, Switzerland. grimberg@erdw.ethz.ch
まとめ
科学者たちは,月の土壌には2種類ではなく,1種類の太陽ガスしか含まれていないことを発見しました. これは,過去の太陽活動に関するパズルを解決し,太陽風の植え付けとして月のネオン同位体を説明します.
科学分野:
- 惑星科学は惑星科学である.
- 宇宙化学 (コスモケミストリー)
- ソーラー物理学 ソーラー物理学
背景:
- 月面の土壌には高貴なガスが含まれており,以前は,太陽風と高エネルギー太陽粒子という2つの異なる太陽成分で構成されると考えられていた.
- 高エネルギーコンポーネントの豊富さは,過去に異常なほど高い太陽活動を示唆し,科学的なパズルを提示しました.
研究 の 目的:
- 月面の土壌におけるネオンの同位体組成を調べるために.
- 観測された同位体変動を説明するために,独立した高エネルギー太陽粒子成分が必要かどうかを判断する.
主な方法:
- NASAのジェネシスミッションからの金属ガラスのサンプルにおけるネオン同位体の分析.
- 太陽風の植え付けモデルと深度依存の同位体組成の比較.
主要な成果:
- 金属ガラスのネオンイソトープの観測された深さプロファイルは,均一な太陽風インプラントの予想プロファイルと一致しました.
- 独特の高エネルギー太陽粒子構成要素の証拠は見つかりませんでした.
結論:
- 月面のサンプルの太陽ネオンの同位体組成は,インプランテーション分断された太陽風によって完全に説明できます.
- 過去の大規模な太陽活動に関する謎めいた証拠は,おそらく不要である.
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