Solar Intranetwork Magnetic Elements: Flux Distributions
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Abstract
The current study aims at quantifying the flux distributions of solar intranetwork (IN) magnetic field based on the data taken in four quiet and two enhanced network areas with the Narrow-band Filter Imager of the Solar Optical Telescope on board the Hinode satellite. More than 14000 IN elements and 3000 NT elements were visually identified. They exhibit a flux distribution function with a peak at 1 – 3×1016 Mx (maxwell) and 2 – 3×1017 Mx, respectively. We found that the IN elements contribute approximately to 52 % of the total flux and an average flux density of 12.4 gauss of the quiet region at any given time. By taking the lifetime of IN elements of about 3 min (Zhou et al., Solar Phys. 267, 63, 2010) into account, the IN fields are estimated to have total contributions to the solar magnetic flux up to 3.8×1026 Mx per day. No fundamental distinction can be identified in IN fields between the quiet and enhanced network areas.
Keywords
Magnetic fields PhotosphereNotes
Acknowledgements
We sincerely thank Professor Sakurai, Editor in Chief of Solar Physics, for his very careful corrections and great improvements. We also thank the anonymous referees for their constructive comments and suggestions. We are grateful to all members of Hinode teams for providing the wonderful data. Hinode is a Japanese mission developed and launched by ISAS/JAXA, with NAOJ as a domestic partner and NASA and STFC (UK) as international partners. The work is supported by the National Natural Science Foundation of China (10973019, 11003024, 10873020, 40731056, 40890161, 40974112, 11025315, 11003026, 10873038, 10833007 and 10921303), the Chinese Academy of Science Project KJCX2-EW-T07, and the National Key Basic Research Science Foundation (G2011CB811403 and G2011CB811402).
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