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A New Broadening Technique of the Numerically Unresolved Solar Transition Region and Its Effect on the Spectroscopic Synthesis Using Coronal Approximation
http://hdl.handle.net/2237/0002002054
http://hdl.handle.net/2237/000200205409898ce5-5a2a-4a28-bf29-2428a0d7336c
名前 / ファイル | ライセンス | アクション |
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Item type | itemtype_ver1(1) | |||||||||
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公開日 | 2022-02-08 | |||||||||
タイトル | ||||||||||
タイトル | A New Broadening Technique of the Numerically Unresolved Solar Transition Region and Its Effect on the Spectroscopic Synthesis Using Coronal Approximation | |||||||||
言語 | en | |||||||||
著者 |
Iijima, Haruhisa
× Iijima, Haruhisa
× Imada, Shinsuke
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アクセス権 | ||||||||||
アクセス権 | open access | |||||||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
権利 | ||||||||||
言語 | en | |||||||||
権利情報 | © 2021. The American Astronomical Society | |||||||||
内容記述 | ||||||||||
内容記述 | The transition region is a thin layer of the solar atmosphere that controls the energy loss from the solar corona. Large numbers of grid points are required to resolve this thin transition region fully in numerical modeling. In this study, we propose a new numerical treatment, called LTRAC, which can be easily extended to the multidimensional domains. We have tested the proposed method using a one-dimensional hydrodynamic model of a coronal loop in an active region. The LTRAC method enables modeling of the transition region with a numerical grid size of 50–100 km, which is about 1000 times larger than the physically required value. We used the velocity differential emission measure to evaluate the possible effects on the optically thin emission. Lower-temperature emissions were better reproduced by the LTRAC method than by previous methods. Doppler shift and nonthermal width of the synthesized line emission agree with those from a high-resolution reference simulation within an error of several kilometers per second above the formation temperature of 10^5 K. | |||||||||
言語 | en | |||||||||
内容記述タイプ | Abstract | |||||||||
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言語 | en | |||||||||
出版者 | IOP publishing | |||||||||
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言語 | eng | |||||||||
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資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||||||
タイプ | journal article | |||||||||
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出版タイプ | VoR | |||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
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関連タイプ | isVersionOf | |||||||||
識別子タイプ | DOI | |||||||||
関連識別子 | https://doi.org/10.3847/1538-4357/ac07a5 | |||||||||
収録物識別子 | ||||||||||
収録物識別子タイプ | PISSN | |||||||||
収録物識別子 | 0004-637X | |||||||||
書誌情報 |
en : The Astrophysical Journal 巻 917, 号 2, p. 65, 発行日 2021-08-20 |
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ファイル公開日 | ||||||||||
日付 | 2022-02-08 | |||||||||
日付タイプ | Available |