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FNWI --- IMAPP Department of Astrophysics
Radboud University > Faculty of Science > Department of Astrophysics

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news:cosmic_rays_and_magnetic_fields_in_galactic_outflows [2012/05/21 09:41] (current)
marijke created
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 +== Cosmic rays and magnetic fields in galactic outflows ==
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 +Cosmic rays and magnetic fields play an important role in galaxy evolution, containing a significant fraction of the energy density in the interstellar medium. Galaxies are among the most promising sites to amplify weak seed magnetic fields in the early Universe, hence their structure holds important clues about processes such as the galactic dynamo. I will briefly review the connection between star formation and radio continuum emission on a resolved basis, before showing that cosmic rays can be a sensitive tracer for galactic outflows. I will present what we can learn about magnetic field structures in galactic outflows from radio continuum polarisation observations. A case study of the nuclear outflow and "disc wind" in NGC 253 will be presented, before briefly touching upon the magnetic field structure in the dwarf irregular galaxy IC10.