The Tilt of the Magnetic Polarity Axis in Active Regions with Different Polarity Separation and Flux |
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| Authors: | Tian Lirong Zhang Hongqi Tong Yi Jing Hairong |
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| Institution: | (1) Beijing Astronomical Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China;(2) Department of Astronomy, Beijing Normal University, Beijing, 100875, China |
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| Abstract: | In this paper, 203 bipolar active regions, in which bipolar magnetic fields are dominant, were chosen from the data set of photospheric vector magnetograms observed at Huairou Solar Observing Station in Beijing during 1988–1996. We calculated the tilts of the magnetic polarity axis in these active regions and investigated the dependence of the tilt on physical quantities such as polarity separation, total flux and the relationship between total flux and polarity separation, total area of active regions.The results are as follows:(1) The active regions with large tilt angle have smaller magnetic polarity separations.(2) The active regions with large tilt angle have smaller fluxes.(3) The active regions with large flux have larger polarity separations.(4) The active regions with large area have larger fluxes.These results will possibly provide new information about the nature and dynamic behavior of magnetic flux tubes forming active regions beneath the photosphere. |
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