On the variability of the apparent solar radius

被引：14
|
作者：
Chapman, G. A. [1 ]
Dobias, J. J. [1 ]
Walton, S. R. [1 ]
机构：
[1] Calif State Univ Northridge, Dept Phys & Astron, San Fernando Observ, Northridge, CA 91330 USA
来源：
ASTROPHYSICAL JOURNAL | 2008年 / 681卷 / 02期
关键词：
Sun : fundamental parameters;
D O I：
10.1086/588512
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Full-disk photometric solar images at a wavelength of 672.3 nm have been obtained daily since 1986 using the CFDT1 (Cartesian Full Disk Telescope No. 1). An analysis of these images from 1986 through the end of 2004 December has shown a peak-to-peak variation in the geocentric north-south solar radius of 0.136 +/- 0.01, approximately in phase with the solar cycle. The multiple correlation coefficient squared is R-2 0.0404 (R = 0.2). While this correlation coefficient is small, due to the large number of data points (N = 4042), the level of significance
引用
收藏
页码：1698 / 1702
页数：5
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