Nonmagnetic framboid and associated iron nanoparticles with a space-weathered feature from asteroid Ryugu
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- Kimura, Yuki
- Institute of Low Temperature Science, Hokkaido University
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- Kato, Takeharu
- Nanostructures Research Laboratory, Japan Fine Ceramics Center
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- Anada, Satoshi
- Nanostructures Research Laboratory, Japan Fine Ceramics Center
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- Yoshida, Ryuji
- Nanostructures Research Laboratory, Japan Fine Ceramics Center
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- Yamamoto, Kazuo
- Nanostructures Research Laboratory, Japan Fine Ceramics Center
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- Tanigaki, Toshiaki
- Research & Development Group, Hitachi, Ltd
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- Akashi, Tetsuya
- Research & Development Group, Hitachi, Ltd
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- Kasai, Hiroto
- Research & Development Group, Hitachi, Ltd
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- Kurosawa, Kosuke
- Planetary Exploration Research Center, Chiba Institute of Technology; Department of Human Environmental Science, Graduate school of Human Development and Environment, Kobe University
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- Nakamura, Tomoki
- Tohoku University
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- Noguchi, Takaaki
- Kyoto University
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- Sato, Masahiko
- The University of Tokyo; ISAS/JAXA
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- Matsumoto, Toru
- Kyoto University
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- Morita, Tomoyo
- Tohoku University
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- Kikuiri, Mizuha
- Tohoku University
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- Amano, Kana
- Tohoku University
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- Kagawa, Eiichi
- Tohoku University
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- Yada, Toru
- ISAS/JAXA
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- Nishimura, Masahiro
- ISAS/JAXA
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- Nakato, Aiko
- National Institute of Polar Research
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- Miyazaki, Akiko
- ISAS/JAXA
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- Yogata, Kasumi
- ISAS/JAXA
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- Abe, Masanao
- ISAS/JAXA
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- Okada, Tatsuaki
- ISAS/JAXA
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- Usui, Tomohiro
- ISAS/JAXA
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- Yoshikawa, Makoto
- ISAS/JAXA
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- Saiki, Takanao
- ISAS/JAXA
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- Tanaka, Satoshi
- ISAS/JAXA
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- Terui, Fuyuto
- Kanagawa Institute of Technology
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- Nakazawa, Satoru
- ISAS/JAXA
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- Yurimoto, Hisayoshi
- Hokkaido University
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- Okazaki, Ryuji
- Kyushu University
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- Yabuta, Hikaru
- Hiroshima University
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- Naraoka, Hiroshi
- Kyushu University
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- Sakamoto, Kanako
- ISAS/JAXA
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- Watanabe, Sei-ichiro
- Nagoya University
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- Tsuda, Yuichi
- ISAS/JAXA
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- Tachibana, Shogo
- The University of Tokyo; ISAS/JAXA
Description
Extraterrestrial minerals on the surface of airless Solar System bodies undergo gradual alteration processes known as space weathering over long periods of time. The signatures of space weathering help us understand the phenomena occurring in the Solar System. However, meteorites rarely retain the signatures, making it impossible to study the space weathering processes precisely. Here, we examine samples retrieved from the asteroid Ryugu by the Hayabusa2 spacecraft and discover the presence of nonmagnetic framboids through electron holography measurements that can visualize magnetic flux. Magnetite particles, which normally provide a record of the nebular magnetic field, have lost their magnetic properties by reduction via a high-velocity (>5 km s⁻¹) impact of a micrometeoroid with a diameter ranging from 2 to 20 μm after destruction of the parent body of Ryugu. Around these particles, thousands of metallic-iron nanoparticles with a vortex magnetic domain structure, which could have recorded a magnetic field in the impact event, are found. Through measuring the remanent magnetization of the iron nanoparticles, future studies are expected to elucidate the nature of the nebular/interplanetary magnetic fields after the termination of aqueous alteration in an asteroid.
Journal
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- Nature Communications
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Nature Communications 15 2024-04-29
Springer Nature
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Keywords
Details 詳細情報について
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- CRID
- 1050864181183426944
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- ISSN
- 20411723
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- HANDLE
- 2433/289012
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- Text Lang
- en
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- Article Type
- journal article
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- Data Source
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- IRDB