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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

Radio Sounding Measurements of the Solar Corona Using Giant Pulses of the Crab Pulsar in 2018

http://hdl.handle.net/2237/00032413
http://hdl.handle.net/2237/00032413
dde93694-57f4-4976-9f7f-6a20335284d8
名前 / ファイル ライセンス アクション
Crab-DM_final.pdf Crab-DM_final (769.7 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-06-23
タイトル
タイトル Radio Sounding Measurements of the Solar Corona Using Giant Pulses of the Crab Pulsar in 2018
言語 en
著者 Tokumaru, Munetoshi

× Tokumaru, Munetoshi

WEKO 100005

en Tokumaru, Munetoshi

Search repository
Tawara, Kaito

× Tawara, Kaito

WEKO 100006

en Tawara, Kaito

Search repository
Takefuji, Kazuhiro

× Takefuji, Kazuhiro

WEKO 100007

en Takefuji, Kazuhiro

Search repository
Sekido, Mamoru

× Sekido, Mamoru

WEKO 100008

en Sekido, Mamoru

Search repository
Terasawa, Toshio

× Terasawa, Toshio

WEKO 100009

en Terasawa, Toshio

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 “This is a post-peer-review, pre-copyedit version of an article published in [Solar Physics]. The final authenticated version is available online at: http://dx.doi.org/10.1007/s11207-020-01644-w”.
キーワード
主題Scheme Other
主題 Solar corona
キーワード
主題Scheme Other
主題 Pulsar
キーワード
主題Scheme Other
主題 Solar wind
抄録
内容記述 Observations of the Crab pulsar at 327 MHz were made at the Toyokawa Observatory of the Institute for Space-Earth Environmental Research, during the solar occultation in mid-June 2018 to investigate the coronal plasma density in the weak sunspot cycle, Cycle 24. The dispersion measurements (DMs) were determined using giant pulses detected from observations of the Crab pulsar. The systematic increase in DM over the background level, observed during the period of the closest approach of the Crab pulsar’s line-of-sight to the Sun, was ascribed to the effect of the coronal plasma. A coronal density model assuming spherical symmetry was determined by fitting it to the DM data, and was compared with those determined in past solar cycles. The best-fit model had large errors, and indicated a systematically higher value than those derived from past observations. The results obtained here are likely to be significantly affected by latitude/longitude variation in coronal plasma density, the time variation of the interstellar medium, mainly the Crab nebula, and increased measurement errors due to the reduced occurrence of giant pulses. Hence, further observations are needed to derive conclusions about a change of coronal density in the current cycle.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2021/06/19
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 Springer
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 AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1007/s11207-020-01644-w
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0038-0938
書誌情報 en : Solar Physics

巻 295, 号 6, p. 80, 発行日 2020-06-19
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