2024-03-28T19:05:25Z
https://nagoya.repo.nii.ac.jp/oai
oai:nagoya.repo.nii.ac.jp:00019715
2023-11-17T04:54:09Z
879:1183:1689:1717
1958年4月19日の日食観測の結果について
ECLIPSE OBSERVATIONS OF MTCROWAVE RADIO SOURCES ON THE SOLAR DISK ON 19 APRIL 1958
田中, 春夫
柿沼, 隆清
TANAKA, Haruo
KAKINUMA, Takakiyo
open access
The partial and annular eclipse on 19 April 1958 was observed at Toyokawa and Hachijojima at four frequencies, i.e. 9400, 3750, 2000 and 1000 Mc/s. Brightness distribution over the solar disk at these frequencies is derived with the aid of interferometric observations at 4000 Mc/s in full course of the eclipse. The maximum brightness was, from 9400 to 1000 Mc/s, of the order of 10^5, 10^6, 2X10^6 and 3x10^6°K respectively. It is very remarkable that the source of polarization is strictly confined in a small area over the sunspot, about 1' in diameter. Thus, two sources of polarization of different sense exist over each pole of a bipolar sunspot. The polarization seems to be determined at a lower altitude than what has been considered. Most of the sources have the sense of extraordinary wave, though some have an opposite sense at 9400 Mc/s. The degree of polarization increases with frequency: the value for the most active spot amounts to more than 60% at 9400 Mc/s, while at 1000 Mc/s, it is subject to nothing.
名古屋大学空電研究所
1959-03-25
jpn
departmental bulletin paper
VoR
http://hdl.handle.net/2237/21761
https://nagoya.repo.nii.ac.jp/records/19715
0465-7756
空電研究所報告
9
1-2
39
41
https://nagoya.repo.nii.ac.jp/record/19715/files/bulria_9_1-2_39.pdf
application/pdf
532.4 kB
2018-02-21