Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 27942 10.12737/stp-51201901 Results of current research Results of current research Results of current research Quasi-periodic oscillations of small-scale magnetic structures and a specific method for measuring the differential rotation of the Sun Quasi-periodic oscillations of small-scale magnetic structures and a specific method for measuring the differential rotation of the Sun Живанович Иван Zhivanovich Ivan ivanzhiv@live.com Риехокайнен Александр Riehokainen Alexandr alerie@utu.fi

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Соловьев Александр Анатольевич Solov'ev Aleksandr Anatolyevich solov.a.a@mail.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Ефремов Вячеслав Иванович Efremov Vyacheslav Ivanovich slavae_sun@mail.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Главная астрономическая обсерватория РАН Санкт-Петербург Россия Central Astronomical Observatory RAS St. Petersburg Russian Federation Астрономический институт им. В.В. Соболева, Санкт-Петербургский государственный университет Санкт-Петербург Россия V.V. Sobolev Astronomical Institute, Saint Petersburg State University Saint Petersburg Russian Federation Факультет физики и астрономии, Университет Турку Финляндия Faculty of Physics and Astronomy, University of Turku Finland Главная астрономическая обсерватория РАН Санкт-Петербург Россия Central Astronomical Observatory RAS Saint Petersburg Russian Federation Калмыцкий государственный университет Kalmyk State University Главная астрономическая обсерватория РАН Санкт-Петербург Россия Central Astronomical Observatory RAS Saint Petersburg Russian Federation 5 1 3 10 https://naukaru.ru/en/nauka/article/27942/view

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.

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.

 solar physics small-scale magnetic structures differential rotation of the Sun solar physics small-scale magnetic structures differential rotation of the Sun

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