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Pulsar Rotation Measures and Large-scale Magnetic Field Reversals in the Galactic Disk

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arxiv 1712.01997 v1 pith:N6T2UBHR submitted 2017-12-06 astro-ph.GA

Pulsar Rotation Measures and Large-scale Magnetic Field Reversals in the Galactic Disk

J. L. Han (NAOC) , R. N. Manchester (CSIRO-ASS) , W. van Straten (AUT) , P. Demorest (NRAO) This is my paper
classification astro-ph.GA
keywords diskrotationfieldmeasureslarge-scalemagneticpulsarsradio
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present the measurements of Faraday rotation for 477 pulsars observed by the Parkes 64-m radio telescope and the Green Bank 100-m radio telescope. Using these results along with previous measurements for pulsars and extra-galactic sources, we analyse the structure of the large-scale magnetic field in the Galactic disk. Comparison of rotation measures of pulsars in the disk at different distances as well as with rotation measures of background radio sources beyond the disk reveals large-scale reversals of the field directions between spiral arms and interarm regions. We develop a model for the disk magnetic field, which can reproduce not only these reversals but also the distribution of observed rotation measures of background sources.

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Cited by 3 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The Rapid ASKAP Continuum Survey VII: Spectra and Polarisation In Cutouts of Extragalactic Sources (SPICE-RACS) Second Data Release -- Unveiling the Magnetised Sky

    astro-ph.GA 2026-05 unverdicted novelty 6.0

    SPICE-RACS DR2 produces the largest single Faraday rotation measure catalog to date from RACS-low3 observations, with 2.5e5 RMs at 6.7 per square degree over most of the southern sky.

  2. The Rapid ASKAP Continuum Survey VII: Spectra and Polarisation In Cutouts of Extragalactic Sources (SPICE-RACS) Second Data Release -- Unveiling the Magnetised Sky

    astro-ph.GA 2026-05 unverdicted novelty 6.0

    SPICE-RACS DR2 delivers the largest single Faraday rotation measure catalog from a radio survey, with 250,000-340,000 RMs across most of the sky at median uncertainty of 2 rad m^{-2}.

  3. The magnetic field of the Milky Way: an observational perspective

    astro-ph.GA 2026-06 unverdicted novelty 1.0

    Review summarizing observational data on the Milky Way's magnetic field structure, including spiral alignment, halo components, turbulence, and correlations with interstellar gas and dust.