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

Thirty small-scale structures in the solar atmosphere, i.e., facula nodes at ±(20°–46°) 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...

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Bibliographic Details
Published inGeomagnetism and Aeronomy Vol. 56; no. 8; pp. 1052 - 1059
Main Authors Strekalova, P. V., Nagovitsyn, Yu. A., Riehokainen, A., Smirnova, V. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2016
Springer Nature B.V
Subjects
Data processing
Earth and Environmental Science
Earth Sciences
Field strength
Geomagnetism
Geophysics/Geodesy
Latitude
Magnetic fields
Motors
Oscillations
Periodic variations
Small scale
Solar atmosphere
Solar cycle
Solar magnetic field
Strength
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Summary:Thirty small-scale structures in the solar atmosphere, i.e., facula nodes at ±(20°–46°) 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.
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ISSN:0016-7932
1555-645X
0016-7940
DOI:10.1134/S0016793216080211