Quasi-periodic oscillations of small-scale magnetic structures and a specific method for measuring the differential rotation of the Sun-Reference-Cited by-同舟云学术

Quasi-periodic oscillations of small-scale magnetic structures and a specific method for measuring the differential rotation of the Sun

Published:2019-03-22 Issue: Volume: Page:3-10
ISSN:2500-0535
Container-title:Solar-Terrestrial Physics
language:en
Short-container-title:

Author:

Живанович Иван¹²,Zhivanovich Ivan³⁴,Риехокайнен Александр⁵,Riehokainen Alexandr⁶,Соловьев Александр¹⁷,Solov'ev Aleksandr³⁸,Ефремов Вячеслав¹,Efremov Vyacheslav³

Affiliation:

1. Главная астрономическая обсерватория РАН

2. Астрономический институт им. В.В. Соболева, Санкт-Петербургский государственный университет

3. Central Astronomical Observatory RAS

4. V.V. Sobolev Astronomical Institute, Saint Petersburg State University

5. Факультет физики и астрономии, Университет Турку

6. Faculty of Physics and Astronomy, University of Turku

7. Калмыцкий государственный университет

8. Kalmyk State University

Abstract

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.

Publisher

Infra-M Academic Publishing House

Subject

Space and Planetary Science,Atmospheric Science,Geophysics

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