Magnetic Landscape Of Solar Polar Region With Solar Optical Telescope Aboard Hinode

Tsuneta, Saku; Suematsu, Y.; Ichimoto, K.; Shimizu, T.; Katsukawa, Y.; Nagata, S.; Orozco Suarez, D.; Lites, B.; Shine, D.; Tarbell, T.; Title, A.
Referencia bibliográfica

American Astronomical Society Meeting 210, #94.05; Bulletin of the American Astronomical Society, Vol. 39, p.218

Advertised on:
5
2007
Número de autores
11
Número de autores del IAC
0
Número de citas
1
Número de citas referidas
1
Descripción
Solar polar region is the final destination for remnant magnetic fields due to meridional flow and granular diffusion, and is very important for the global solar dynamo. Hinode satellite carried out high-resolution spectro-polarimetric observations for the Northern pole on 2006 November 22 as a part of its performance verification program. We find ubiquitous isolated (positive and negative) patches in the Stokes V map (i.e. fields horizontal to local surface) all over the Arctic circle. The Q (vertical to local surface) map indicates scattered vertical flux tubes, which have bipolar feature in the U and V maps. This suggests canopy-like structure of the strong isolated flux tubes. This will be compared with equatorial landscape with similar distance from the sun center. Strong flux tube and weaker ubiquitous horizontal fields as represented by Stokes V would have implication to the current understanding of the global and local dynamo.