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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

Thermal and Nonthermal Emissions of a Composite Flare Derived from NoRH and SDO Observations

http://hdl.handle.net/2237/00028305
http://hdl.handle.net/2237/00028305
ad61d362-2fc2-40a6-983c-032e63de9f0b
名前 / ファイル ライセンス アクション
Lee_2017_ApJ_850_124.pdf Lee_2017_ApJ_850_124 (3.3 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2018-06-13
タイトル
タイトル Thermal and Nonthermal Emissions of a Composite Flare Derived from NoRH and SDO Observations
言語 en
著者 Lee, Jeongwoo

× Lee, Jeongwoo

WEKO 78283

en Lee, Jeongwoo

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White, Stephen M.

× White, Stephen M.

WEKO 78284

en White, Stephen M.

Search repository
Jing, Ju

× Jing, Ju

WEKO 78285

en Jing, Ju

Search repository
Liu, Chang

× Liu, Chang

WEKO 78286

en Liu, Chang

Search repository
Masuda, Satoshi

× Masuda, Satoshi

WEKO 78287

en Masuda, Satoshi

Search repository
Chae, Jongchul

× Chae, Jongchul

WEKO 78288

en Chae, Jongchul

Search repository
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 © 2017. The American Astronomical Society
キーワード
主題Scheme Other
主題 methods: data analysis
キーワード
主題Scheme Other
主題 Sun: activity
キーワード
主題Scheme Other
主題 Sun: corona
キーワード
主題Scheme Other
主題 Sun: flares
キーワード
主題Scheme Other
主題 Sun: radio radiation
抄録
内容記述 Differential emission measure (DEM) derived from the extreme ultraviolet (EUV) lines of the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamic Observatory is used in the analysis of a solar flare observed by the Nobeyama Radioheliograph (NoRH). The target was a composite event consisting of an impulsive flare, SOL2015-06-21T01:42 (GOES class M2.0), and a gradual flare, SOL2015-06-21T02:36 (M2.6), for which separation of thermal plasma heating from nonthermal particle acceleration was of major interest. We have calculated the thermal free–free intensity maps with the AIA-derived DEM and compared them against the observed NoRH maps to attribute the difference to the nonthermal component. In this way, we were able to locate three distinct sources: the major source with thermal and nonthermal components mixed, a nonthermal source devoid of thermal particles, and a thermal source lacking microwave emission. Both the first and the second nonthermal sources produced impulsively rising 17 GHz intensities and moved away from the local magnetic polarization inversion lines in correlation with the flare radiation. In contrast, the thermal sources stay in fixed locations and show temporal variations of the temperature and emission measure uncorrelated with the flare radiation. We interpret these distinct properties as indicating that nonthermal sources are powered by magnetic reconnection and thermal sources passively receive energy from the nonthermal donor. The finding of these distinct properties between thermal and nonthermal sources demonstrates the microwave and EUV emission measure combined diagnostics.
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
DOI
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/aa96b6
ISSN
収録物識別子タイプ EISSN
収録物識別子 1538-4357
書誌情報 en : The Astrophysical Journal

巻 850, 号 2, p. 124, 発行日 2017-11-27
著者版フラグ
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