Long-period variations in the magnetic field of small-scale solar structures

被引：10
作者：
Strekalova, P. V. [1 ,2 ]
Nagovitsyn, Yu. A. [1 ,3 ]
Riehokainen, A. [4 ]
Smirnova, V. V. [1 ]
机构：
[1] Russian Acad Sci, Main Astron Pulkovo Observ, St Petersburg 196140, Russia
[2] St Petersburg State Univ, St Petersburg 199034, Russia
[3] St Petersburg State Univ Aerosp Instrumentat, St Petersburg, Russia
[4] Univ Turku, Turku, Finland
来源：
GEOMAGNETISM AND AERONOMY | 2016年 / 56卷 / 08期
基金：
俄罗斯基础研究基金会;
关键词：
OSCILLATIONS; SUNSPOTS;
D O I：
10.1134/S0016793216080211
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Thirty small-scale structures in the solar atmosphere, i.e., facula nodes at +/-(20A degrees-46A degrees) latitudes, have been studied in order to analyze quasi-periodic variations in the magnetic field. SDO/HMI magnetograms have been used for this purpose. Long-period variations in the magnetic field strength of the considered objects in the 60-280 min range have been revealed as a result of data processing. It has been shown that there are no dependences between the magnetic field and period, nor between the magnetic field and object area. It has been assumed that the discovered variations are not natural oscillations of the magnetic field strength.
引用
收藏
页码：1052 / 1059
页数：8
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