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arXiv · 2102.02856

Revisiting Rotation Measures from the Canadian Galactic Plane Survey: the Magnetic Field in the Disk of the Outer Galaxy

C. L. Van Eck·J. C. Brown·A. Ordog·R. Kothes·T. L. Landecker·B. Cooper·K. M. Rae·D. A. Del Rizzo·A. D. Gray·R. Ransom·R. I. Reid·B. Uyaniker
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Abstract

Faraday rotation provides a valuable tracer of magnetic fields in the interstellar medium; catalogs of Faraday rotation measures provide key observations for studies of the Galactic magnetic field. We present a new catalog of rotation measures derived from the Canadian Galactic Plane Survey, covering a large region of the Galactic plane spanning 52 deg < l < 192 deg, -3 deg < b < 5 deg, along with northern and southern latitude extensions around l ~ 105 deg. We have derived rotation measures for 2234 sources (4 of which are known pulsars), 75% of which have no previous measurements, over an area of approximately 1300 square degrees. These new rotation measures increase the measurement density for this region of the Galactic plane by a factor of two.

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C. L. Van Eck, J. C. Brown, A. Ordog, R. Kothes, T. L. Landecker, B. Cooper, K. M. Rae, D. A. Del Rizzo, A. D. Gray, R. Ransom, R. I. Reid, B. Uyaniker. 2021-02-04. Revisiting Rotation Measures from the Canadian Galactic Plane Survey: the Magnetic Field in the Disk of the Outer Galaxy. https://doi.org/10.3847/1538-4365/abe389

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