QUASI-PERIODIC OSCILLATIONS OF SMALL-SCALE MAGNETIC STRUCTURES AND A SPECIFIC METHOD FOR MEASURING THE DIFFERENTIAL ROTATION OF THE SUN
Journal Title: Solar-Terrestrial Physics - Year 2019, Vol 5, Issue 1
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.
Authors and Affiliations
Zhivanovich I. , Riehokainen A. , Solov’ev A. A. , Efremov V. I.
Keywords
Related Articles
- EP ID EP700248
- DOI 10.12737/stp-51201901
- Views 111
- Downloads 0
ICELAND SPAR AND BIREFRINGENT FILTER (BF) DEVELOPMENT
Birefringent crystals for BF are required to provide the necessary linear aperture, wavefront quality, and filter transmission in a given spectral region. Based on the review of foreign and domestic BF developments, the...
PROBLEMS OF THE PC1 MAGNETOSPHERIC WAVE THEORY. A REVIEW
The Pc1 ultralow-frequency electromagnetic waves (frequency range 0.2–5 Hz), also known as pearl necklace, are a unique phenomenon in near-Earth space physics. Many properties of pearls remain a mystery, despite the rese...
MANIFESTATION OF SOLAR WIND COROTATING INTERACTION REGIONS IN GCR INTENSITY VARIATIONS
The regions of interaction between solar wind streams of different speed, known as corotating interaction regions, form an almost constantly existing structure of the inner heliosphere. Using observational data on the ma...
DIAGNOSTICS OF AURORAL OVAL BOUNDARIES ON THE BASIS OF THE MAGNETOGRAM INVERSION TECHNIQUE
It is shown that the convection reversal boundary is a fundamental parameter of the magnetosphere-ionosphere coupling, which determines a strong analogy between the electrostatic potential of the ionosphere and the equiv...
SIMULATION STUDY OF THE ENERGETIC NEUTRAL ATOM (ENA) IMAGING MONITORING OF THE GEOMAGNETOSPHERE ON A LUNAR BASE
Since the moon’s revolution cycle is exactly the same as its rotation cycle, we can only see the moon always facing Earth in the same direction. Based on the clean particle radiation environment of the moon, a neutral at...