Helioseismic Measurements of the Torsional Oscillation

被引:0
|
作者
Schou, J. [1 ]
Howe, R. [2 ]
Larson, T. P. [1 ]
机构
[1] Stanford Univ, Stanford, CA 94305 USA
[2] Univ Birmingham, Sch Phys & Astron, Birmingham B152TT, W Midlands, England
来源
PROGRESS IN SOLAR/STELLAR PHYSICS WITH HELIO- AND ASTEROSEISMOLOGY | 2012年 / 462卷
关键词
MICHELSON DOPPLER IMAGER;
D O I
暂无
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The zonal flows known as the torsional oscillation have by now been observed for more than 15 years using observations from the Michelson Doppler Imager (MDI) and Global Oscillation Network Group (GONG). Even with this limited set of data it is clear that there are significant differences between the cycles, as also evidenced by the prolonged recent solar minimum. Here we discuss some of these differences and their significance. In particular we discuss the slower development of the current solar cycle and the lack of a polar branch in the torsional oscillation. We will also compare results from MDI and the Helioseismic Magnetic Imager (HMI) and discuss the prospects for generating longer consistent sets of observations.
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页码:352 / +
页数:2
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