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| ファイル | 記述 | サイズ | フォーマット | |
|---|---|---|---|---|
| 1538-4357_ac5963.pdf | 604.69 kB | Adobe PDF | 見る/開く |
| タイトル: | Investigation of the Long-term Variation of Solar Ca II K Intensity. II. Reconstruction of Solar UV Irradiance |
| 著者: | Kakuwa, Jun Ueno, Satoru    https://orcid.org/0000-0002-2165-7998 (unconfirmed) |
| 著者名の別形: | 格和, 純 上野, 悟 |
| キーワード: | Astronomy data analysis Photoheliographs Solar chromosphere Solar cycle Solar ultraviolet emission Solar-terrestrial interactions |
| 発行日: | 20-Mar-2022 |
| 出版者: | American Astronomical Society |
| 誌名: | The Astrophysical Journal |
| 巻: | 928 |
| 号: | 1 |
| 論文番号: | 97 |
| 抄録: | Reconstruction of long-term solar UV variations during the entire 20th century is reported. The sunspot number has been used for this purpose so far. By using the full-disk Ca K intensity as an additional solar UV proxy, the range of allowed values for the reconstructed UV irradiance becomes more restricted. We use long-term archival data of the photographic Ca K plates digitized at the Kodaikanal Solar Observatory. The photographic calibration method developed in our previous paper (Paper I) is applied. Various long-term proxy data of solar activity have been used to estimate past UV irradiance. In light of this context, some issues using the historical Ca K data are commented on. |
| 著作権等: | © 2022. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
| URI: | http://hdl.handle.net/2433/277547 |
| DOI(出版社版): | 10.3847/1538-4357/ac5963 |
| 出現コレクション: | 学術雑誌掲載論文等 |
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