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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/2237/00032413dde93694-57f4-4976-9f7f-6a20335284d8
名前 / ファイル | ライセンス | アクション |
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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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× Tawara, Kaito× Takefuji, Kazuhiro× Sekido, Mamoru× Terasawa, Toshio |
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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 | “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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著者版フラグ | ||||||
値 | author |