Variation of the Solar Microwave Spectrum in the Last Half Century
書誌事項
- 公開日
- 2017-10-10
- 資源種別
- journal article
- 権利情報
-
- https://iopscience.iop.org/page/copyright
- https://iopscience.iop.org/info/page/text-and-data-mining
- DOI
-
- 10.3847/1538-4357/aa8c75
- 10.48550/arxiv.1709.03695
- 公開者
- American Astronomical Society
この論文をさがす
説明
<jats:title>Abstract</jats:title><jats:p>The total solar fluxes at 1, 2, 3.75, and 9.4 GHz were observed continuously from 1957 to 1994 at Toyokawa, Japan, and from 1994 until now at Nobeyama, Japan, with the current Nobeyama Radio Polarimeters. We examined the multi-frequency and long-term data sets, and found that not only the microwave solar flux but also its monthly standard deviation indicate the long-term variation of solar activity. Furthermore, we found that the microwave spectra at the solar minima of Cycles 20–24 agree with each other. These results show that the average atmospheric structure above the upper chromosphere in the quiet-Sun has not varied for half a century, and suggest that the energy input for atmospheric heating from the sub-photosphere to the corona have not changed in the quiet-Sun despite significantly differing strengths of magnetic activity in the last five solar cycles.</jats:p>
収録刊行物
-
- The Astrophysical Journal
-
The Astrophysical Journal 848 (1), 62-, 2017-10-10
American Astronomical Society
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1360004239674167040
-
- ISSN
- 15384357
- 0004637X
-
- 資料種別
- journal article
-
- データソース種別
-
- Crossref
- KAKEN
- OpenAIRE
