Journal Article

New pulsar rotation measures and the Galactic magnetic field

A. Noutsos, S. Johnston, M. Kramer and A. Karastergiou

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 386, issue 4, pages 1881-1896
Published in print June 2008 | ISSN: 0035-8711
Published online April 2008 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2008.13188.x
New pulsar rotation measures and the Galactic magnetic field

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We measured a sample of 150 pulsar rotation measures (RMs) using the 20-cm receiver of the Parkes 64-m radio telescope. 46 of the pulsars in our sample have not had their RM values previously published, whereas 104 pulsar RMs have been revised. We used a novel quadratic fitting algorithm to obtain an accurate RM from the calibrated polarization profiles recorded across 256 MHz of receiver bandwidth. The new data are used in conjunction with previously known dispersion measures and the NE2001 electron-density model to study models of the direction and magnitude of the Galactic magnetic field.

Keywords: techniques: polarimetric; pulsars: general; Galaxy: structure; galaxies: magnetic fields

Journal Article.  10250 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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