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Paper: Near–Infrared Polarimetry toward the Galactic Center – Magnetic Field Configuration in the Central One Degree Region
Volume: 439, The Galactic Center: a Window to the Nuclear Environment of Disk Galaxies
Page: 57
Authors: Nishiyama, S.; Hatano, H.; Tamura, M.; Nagata, T.
Abstract: We present a NIR polarimetric map of the 1°×1° region toward the Galactic center. Comparing Stokes parameters between highly reddened stars and less reddened ones, we have obtained a polarization originating from magnetically aligned dust grains at the central region of our Galaxy. The distribution of position angles shows a peak at the parallel direction to the Galactic plane, suggesting a toroidal magnetic field configuration. However, at high Galactic latitudes, the peak of the position angles departs from the direction of the Galactic plane. This may be a transition of a large-scale magnetic field configuration from toroidal to poloidal.
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