OBSERVATIONS OF CORONAL OSCILLATIONS ABOVE AN ACTIVE REGION

被引：13

作者：

EGAN, TF ^{[1
]}

SCHNEEBERGER, TJ ^{[1
]}

机构：

[1] UNIV TEXAS,DEPT PHYS,EL PASO,TX 79968

来源：

SOLAR PHYSICS | 1979年 / 64卷 / 02期

关键词：

D O I：

10.1007/BF00151433

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Periodic Doppler width fluctuations have been observed in Fe xiv spectra above an active region. The oscillations have a period of 6.1 ± 0.6 min and a peak-to-peak amplitude of 0.07 ± 0.006 Å. The amplitude of the oscillation increases with height above the limb, and is enhanced at specific heights where we marginally detect line center intensity oscillations. The intensity fluctuations have a period of 6.1 min, an amplitude of 2.0 ± 1.4%, and are 180 ° out of phase with the width oscillations. A comparison region in the quiet corona showed no evidence of oscillatory phenomena. © 1979 D. Reidel Publishing Co.

引用

页码：223 / 228

页数：6

共 9 条

[1]

ATHAY RG, 1979, ASTROPHYS J S, V30, P317

[2] FLUX OF ALFVEN WAVES IN SUNSPOTS [J].