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Bennu and Ryugu: diamonds in the sky
https://oist.repo.nii.ac.jp/records/2327
https://oist.repo.nii.ac.jp/records/232773ea44a5-13a2-4950-a164-00202799a72a
名前 / ファイル | ライセンス | アクション |
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Sabuwala-2021-Bennu and Ryugu_ diamonds in the (1.6 MB)
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Creative Commons Attribution 4.0 International(https://creativecommons.org/licenses/by/4.0/)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-10-15 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Bennu and Ryugu: diamonds in the sky | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Rubble pile asteroids | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Rotating asteroids | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Granular material | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Discrete element method | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者(英) |
Sabuwala, Tapan
× Sabuwala, Tapan× Chakraborty, Pinaki× Shinbrot, Troy |
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書誌情報 |
en : Granular Matter 巻 23, 号 4, p. 81, 発行日 2021-09-04 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | Rapidly spinning and loosely aggregated asteroids appear to take on diamond-shaped profiles, with elevated poles as well as equators. The evolutionary processes that form these characteristic shapes remain a matter of debate. In this paper, we propose a novel model, based on debris accretion, to explain these diamond-shaped profiles. We derive an analytic expression for the shapes of such rapidly spinning rubble piles based on the principle that as rubble is deposited it assumes a critical angle of repose. We show that this expression correctly reproduces diamond shaped profiles. We also conduct granular simulations of debris deposition and show that simulated shapes are in striking accord with both observations and analytical results. Our results suggest that non-uniform debris accumulation, which is overlooked in current models, may play a cardinal role in the formation of diamond-shaped asteroids. | |||||
出版者 | ||||||
出版者 | Springer Nature | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1434-7636 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1434-5021 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1007/s10035-021-01152-z | |||||
権利 | ||||||
権利情報 | © 2021 The Author(s). | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://link.springer.com/article/10.1007%2Fs10035-021-01152-z | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |