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Communication Dans Un Congrès Année : 2020

New constraints on galactic CRE transport from radio continuum observations

Ralf-Juergen Dettmar
  • Fonction : Auteur
Volker Heesen
  • Fonction : Auteur
Arpad Miskolczi
  • Fonction : Auteur

Résumé

The importance of cosmic rays and magnetic fields for the physics of the interstellar medium and the evolution of galaxies is demonstrated by a number of recent numerical simulations. We present new observations of the cosmic ray electron transport as well as the magnetic field strength and structure in galactic halos from radio-continuum polarization studies of edge-on disk galaxies obtained by the CHANG-ES (Continuum Halos in Nearby Galaxies - an EVLA Survey) project.The observations are discussed in the context of transport models for Cosmic Ray Eelctrons (CREs) from the star-forming disks into the halo. The observations also allow to derive the magentic field structure in galactic halos. In addition, it is demonstrated how recent low frequency observations of edge-on galaxies with LOFAR help to further constrain the problem.

Dates et versions

hal-03143644 , version 1 (16-02-2021)

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Ralf-Juergen Dettmar, Volker Heesen, Arpad Miskolczi, Yelena Stein. New constraints on galactic CRE transport from radio continuum observations. 36th International Cosmic Ray Conference, Jul 2019, Madison, United States. pp.237, ⟨10.22323/1.358.0237⟩. ⟨hal-03143644⟩
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