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Open AccessArticle

CHANG-ES: XVIII—The CHANG-ES Survey and Selected Results

by
Judith Irwin
1,*,
Ancor Damas-Segovia
2,
Marita Krause
3,
Arpad Miskolczi
4,
Jiangtao Li
5,
Yelena Stein
4,6,
Jayanne English
7,
Richard Henriksen
1,
Rainer Beck
3,
Theresa Wiegert
1 and
Ralf-Jürgen Dettmar
4
1
Department of Physics, Engineering Physics & Astronomy, Queen’s University, Kingston, ON K7L 3N6, Canada
2
Departamento de Astronomía Extragaláctica, Instituto de Astrofísica de Andalucía, Glorieta de la Astronomía sn, 18008 Granada, Spain
3
Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
4
Faculty of Physics & Astronomy, Astronomical Institute, Ruhr-University Bochum, 44780 Bochum, Germany
5
Department of Astronomy, University of Michigan, 311 West Hall, 1085 S. University Ave., Ann Arbor, MI 48109, USA
6
Observatoire Astronomique de Strasbourg, Université de Strasbourg, CNRS, UMR 7550, 11 rue de l’Université, F-67000 Strasbourg, France
7
Deptartment of Physics & Astronomy, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
*
Author to whom correspondence should be addressed.
Galaxies 2019, 7(1), 42; https://doi.org/10.3390/galaxies7010042
Received: 12 February 2019 / Revised: 1 March 2019 / Accepted: 12 March 2019 / Published: 26 March 2019
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Abstract

The CHANG-ES (Continuum Halos in Nearby Galaxies) survey of 35 nearby edge-on galaxies is revealing new and sometimes unexpected and startling results in their radio continuum emission. The observations were in wide bandwidths centred at 1.6 and 6.0 GHz. Unique to this survey is full polarization data showing magnetic field structures in unprecedented detail, resolution and sensitivity for such a large sample. A wide range of new results are reported here, some never before seen in any galaxy. We see circular polarization and variability in active galactic nuclei (AGNs), in-disk discrete features, disk-halo structures sometimes only seen in polarization, and broad-scale halos with reversing magnetic fields, among others. This paper summarizes some of the CHANG-ES results seen thus far. View Full-Text
Keywords: galaxies individual; galaxies spiral; galaxies magnetic fields; radio continuum galaxies galaxies individual; galaxies spiral; galaxies magnetic fields; radio continuum galaxies
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MDPI and ACS Style

Irwin, J.; Damas-Segovia, A.; Krause, M.; Miskolczi, A.; Li, J.; Stein, Y.; English, J.; Henriksen, R.; Beck, R.; Wiegert, T.; Dettmar, R.-J. CHANG-ES: XVIII—The CHANG-ES Survey and Selected Results. Galaxies 2019, 7, 42. https://doi.org/10.3390/galaxies7010042

AMA Style

Irwin J, Damas-Segovia A, Krause M, Miskolczi A, Li J, Stein Y, English J, Henriksen R, Beck R, Wiegert T, Dettmar R-J. CHANG-ES: XVIII—The CHANG-ES Survey and Selected Results. Galaxies. 2019; 7(1):42. https://doi.org/10.3390/galaxies7010042

Chicago/Turabian Style

Irwin, Judith; Damas-Segovia, Ancor; Krause, Marita; Miskolczi, Arpad; Li, Jiangtao; Stein, Yelena; English, Jayanne; Henriksen, Richard; Beck, Rainer; Wiegert, Theresa; Dettmar, Ralf-Jürgen. 2019. "CHANG-ES: XVIII—The CHANG-ES Survey and Selected Results" Galaxies 7, no. 1: 42. https://doi.org/10.3390/galaxies7010042

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