2024-03-29T07:29:55Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00019768
2023-01-26T06:48:22Z
879:1183:1689:1725
ELEVEN-YEAR VARIATION OF THE SPECTRUM OF SOLAR RADIO EMISSION ON THE MICROWAVE REGION
マイクロ波帯における太陽電波スペクトルの11年変化
田中, 春夫
57769
TANAKA, Haruo
57770
1964-03-25
Daily values of flux density at four frequencies on microwave region observed at Toyokawa for more than the half of a complete solar cycle were reviewed and some corrections were made for 9400 and 2000 Mc/s. Basic components were estimated with the aid of interferometric observations as well as by statistics. It was found that the eleven-year change of the basic components amounts to 3.0, 1.56 and 1.13 times the quiet sun levels for 1000, 2000, 3750 and 9400 Mc/s respectively. The spectrum of the slowly varying component changes appreciably during the solar cycle. The slowly varying components at 3750 and 2800 Mc/s arc remarkably parallel in spite of an appreciable difference in the variation of basic components. The slowly varying component at 9400 Mc/s is relatively strong at the slope of the solar cycle. The spectrum of slowly varying component seems to be connected with a great burst following proton events. The slowly varying component at 1000 Mc/s is relatively small at the solar maximum, the effect of the sunspot seeming to be masked by the increased electron density in the corona.
departmental bulletin paper
名古屋大学空電研究所
1964-03-25
空電研究所報告
1-2
14
11
22
http://hdl.handle.net/2237/21814
0465-7756
jpn