The Fan Region at 1.5 GHz – I. Polarized synchrotron emission extending beyond the Perseus Arm

A. S. Hill,T. L. Landecker,E. Carretti,K. Douglas,X. H. Sun,B. M. Gaensler, S. A. Mao,N. M. McClure-Griffiths,W. Reich, M. Wolleben,J. M. Dickey,A. D. Gray,M. Haverkorn,J. P. Leahy,D. H. F. M. Schnitzeler

Monthly Notices of the Royal Astronomical Society（2017）

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摘要

The Fan Region is one of the dominant features in the polarized radio sky, long thought to be a local (distance ≲500 pc) synchrotron feature. We present 1.3–1.8 GHz polarized radio continuum observations of the region from the Global Magneto-Ionic Medium Survey and compare them to maps of Hα and polarized radio continuum intensity from 0.408 to 353 GHz. The high-frequency (>1 GHz) and low-frequen...

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关键词

polarization,ISM: magnetic fields,ISM: structure,Galaxy: structure,radio continuum: ISM

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