RESONANT BEHAVIOR OF MHD WAVES ON MAGNETIC-FLUX TUBES .2. ABSORPTION OF SOUND-WAVES BY SUNSPOTS

被引：78

作者：

SAKURAI, T

GOOSSENS, M

HOLLWEG, JV

机构：

[1] CATHOLIC UNIV LEUVEN,INST ASTRON,B-3030 HEVERLEE,BELGIUM

[2] UNIV NEW HAMPSHIRE,INST STUDY EARTH OCEANS & SPACE,CTR SPACE SCI,DURHAM,NH 03824

来源：

SOLAR PHYSICS | 1991年 / 133卷 / 02期

关键词：

D O I：

10.1007/BF00149889

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The absorption of solar five-min oscillations by sunspots is interpreted as the resonant absorption of sound waves by a magnetic cylinder. The absorption coefficient is calculated both analytically under certain simplifying assumptions, and numerically under more general conditions. The observed magnitude of the absorption coefficient, which is up to 0.5 or even more, can be explained for suitable ranges of parameters. Limitations in the present model are also discussed.

引用

页码：247 / 262

页数：16

共 10 条

[1] THE ABSORPTION OF HIGH-DEGREE P-MODE OSCILLATIONS IN AND AROUND SUNSPOTS [J].