Changes in high-degree mode characteristics with magnetic activity

被引：0
|
作者：
Bogart, RS [1 ]
Basu, S [1 ]
Antia, HM [1 ]
机构：
[1] Stanford Univ, Stanford, CA 94305 USA
来源：
PROCEEDINGS OF THE SOHO 11 SYMPOSIUM ON FROM SOLAR MIN TO MAX: HALF A SOLAR CYCLE WITH SOHO | 2002年 / 508卷
关键词：
helioseismology; ring-diagrams; mode parameters; solar magnetic activity;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We compare mode frequencies and other characteristics as determined from ring-diagram analysis of selected small regions of the Sun exhibiting strong variations in magnetic activity. These regions were observed with the Michelson Doppler Imager (MDI) on SOHO in its high-resolution mode during several years from solar minimum to maximum. To better understand the systematic uncertainties in fitting the ridges to the high-resolution data, we compare our results with those for the same regions concurrently observed in the MDI full-disc mode. We find that the the properties of high degree p-modes are different in active and quiet regions and that the magnitude of the changes depend oil the activity level.
引用
收藏
页码：145 / 148
页数：4
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