A virial theorem investigation of magnetic variations in the Sun

被引：11

作者：

Stothers, Richard B. ^{[1
]}

机构：

[1] NASA, Goddard Inst Space Studies, New York, NY 10025 USA

来源：

ASTROPHYSICAL JOURNAL | 2006年 / 653卷 / 01期

关键词：

magnetic fields; Sun : interior; SOLAR-CYCLE DEPENDENCE; APPARENT RADIUS; DISK SEXTANT; DIAMETER; TEMPERATURE; CONSTANCY; FIELDS; VARIABILITY; IRRADIANCE; OBLATENESS;

D O I：

10.1086/510406

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The magnetic virial theorem is applied here to a long-standing astrophysical problem, namely, the sign of the Sun's radius change during the solar activity cycle. The solar radius is theoretically found to decrease around the time of maximum magnetic field strength, in agreement with the best available observational evidence. This theoretical prediction, although simply based, instills some confidence by explicitly satisfying the conservation of total energy.

引用

页码：L73 / L75

页数：3

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