Open AccessQuasi-periodic oscillations of small-scale magnetic structures and a specific method for measuring the differential rotation of the Sun
Author(s) -
I. Zhivanovich,
I. Zhivanovich,
Александр Риехокайнен,
A. Riehokainen,
А. А. Соловьев,
А. А. Соловьев,
V. I. Efremov,
V. I. Efremov
Publication year - 2019
Publication title -
solnečno-zemnaâ fizika
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.11
H-Index - 2
ISSN - 2412-4737
DOI - 10.12737/szf-51201901
Subject(s) - differential rotation , rotation (mathematics) , physics , scale (ratio) , differential (mechanical device) , fourier analysis , solar rotation , photosphere , latitude , fourier transform , artifact (error) , computational physics , astrophysics , magnetic field , geometry , solar physics , astronomy , computer science , mathematics , stars , quantum mechanics , computer vision , thermodynamics
The SDO/HMI data with an angular resolution of 1 arcsec have been used to explore the differential rotation on the Sun, using an original “p2p” effect on the basis of the movement of small-scale magnetic structures in the photosphere of the Sun. It is shown that a stable p2p artifact inherent in the SDO/HMI data can be an effective tool for measuring the speed of various tracers on the Sun. In particular, in combination with the Fourier analysis, it allows us to investigate the differential rotation of the Sun at various latitudes. The differential rotation curve obtained from the SDO/HMI magnetograms by this method is in good agreement with the curves obtained earlier from ground-based observations.