Characteristics of solar wind rotation
arXiv:1908.11021 · doi:10.1093/mnras/stz2407
Abstract
Over 54 years of hourly mean value of solar wind velocity from 27 Nov. 1963 to 31 Dec. 2017 are used to investigate characteristics of the rotation period of solar wind through auto-correlation analysis. Solar wind of high velocity is found to rotate faster than low-velocity wind, while its rotation rate increases with velocity increasing, but in contrast for solar wind of low velocity, its rotation rate decreases with velocity increasing. Our analysis shows that solar wind of a higher velocity statistically possesses a faster rotation rate for the entire solar wind. The yearly rotation rate of solar wind velocity does not follow the Schwable cycle, but it is significantly negatively correlated to yearly sunspot number when it leads by 3 years. Physical explanations are proposed to these findings.
arXiv commentAccepted for publication in MNRAS;31 pages, 14 figures
References in corpus (11)
- Coronal Holes
- Solar Coronal Jets: Observations, Theory, and Modeling
- Origins of the Ambient Solar Wind: Implications for Space Weather
- Establishing a Connection Between Active Region Outflows and the Solar Wind: Abundance Measurements with EIS/Hinode
- Wavelet Analysis on Solar Wind Parameters and Geomagnetic Indices
- Self Consistent Models of the Solar Wind
- Coronal hole boundaries at small scales: III. EIS and SUMER views
- Temporal Variation of the Hemispheric Solar Rotation
- Statistical properties of coronal hole rotation rates: Are they linked to the solar interior?
- Evolution of active region outflows throughout an active region lifetime
- Magnetic field as a tracer for studying the differential rotation of the solar corona