Properties of G-band bright points

Y. Kitakoshi, S. Tsuneta, Y. Katsukawa, J. A. Bonet, S. Vargas T. Ebisuzaki, and T. Iitaka

We had performed coordinated observations with Swedish, Dutch, and German telescopes in Canaries and TRACE, and present high resolution observations of the G-band bright points for two contrasting active regions; a complex plage region and a simple region. G-band bright points are believed to represent elemental magnetic fields. Its lifetime is relatively short, and its shape is complex. Its evolution involves appearance, fragmentation, merging, elongation, and disappearance. If they faithfully represent elemental magnetic fields, whole evolution raises a fundamental issue related to generation and disappearance of solar magnetic fields. We show various evolution cases of G-band bright points to see their variety, dependence of shape and distribution on environment by comparing the contrasting two regions, and relationship with simultaneous polarization signals.

Correspondence

Yasunori Kitakoshi, Department of Astronomy, University of Tokyo

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