Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007pasj...59s.613m&link_type=abstract
Publications of the Astronomical Society of Japan, Vol.59, No.SP3, pp.S613--S617
Astronomy and Astrophysics
Astronomy
2
Sun: Center-Limb-Variation, Sun: Magnetic Fields, Sun: Photosphere
Scientific paper
Here we present spectro-polarimetric measurements of several pores and the surrounding regions taken with the Solar Optical Telescope aboard Hinode at various viewing angles. We analyzed the Stokes V area asymmetry, and confirmed that it is depressed at the center of the pores, while it shows large positive values (a blue lobe larger than a red lobe) in the surrounding area; this is consistent with a previous report. In addition to this ring of positive asymmetry, we found regions of alternating positive and negative area asymmetries when weak V regions were observed near the solar limb. The positive asymmetry occurs on the disk-center side and the negative asymmetry on the limb side of the magnetic concentrations. These center-to-limb variations of the Stokes V area asymmetry can be interpreted as being a systematic inflow of plasma into the magnetic concentrations from their surroundings.
Ichimoto Kiyoshi
Katsukawa Yukio
Kubo Masahito
Lites Bruce
Morinaga Shuji
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