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

AuthorsIrwin, Judith; Damas-Segovia, Ancor; Krause, Marita; Miskolczi, Arpad; Li, Jiangtao; Stein, Yelena; English, Jayanne; Henriksen, Richard; Beck, Rainer; Wiegert, Theresa; Dettmar, Ralf-Jürgen
KeywordsGalaxies individual
Galaxies spiral
Galaxies magnetic fields
Radio continuum galaxies
Issue Date26-Mar-2019
PublisherMultidisciplinary Digital Publishing Institute
CitationGalaxies 7(1): 42 (2019)
AbstractThe 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.
Publisher version (URL)http://dx.doi.org/10.3390/galaxies7010042
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