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  1. F300 宇宙地球環境研究所
  2. F300a 雑誌掲載論文
  3. 学術雑誌

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/2237/0002002054
09898ce5-5a2a-4a28-bf29-2428a0d7336c
名前 / ファイル ライセンス アクション
Iijima_2021_ApJ_917_65.pdf Iijima_2021_ApJ_917_65.pdf (2.6 MB)
Item type itemtype_ver1(1)
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

en Iijima, Haruhisa

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Imada, Shinsuke

× Imada, Shinsuke

en 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
出版者
言語 en
出版者 IOP publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
関連情報
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
ファイル公開日
日付 2022-02-08
日付タイプ Available
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