Astrophysics and Space Science

, Volume 156, Issue 1–2, pp 195–198 | Cite as

Acceleration of cosmic-ray electrons by large-scale galactic spiral shocks — An observational report

  • M. Urbanik
  • R. Beck
  • U. Klein
  • R. Gräve
Structure of Spirals and Galaxy Interactions


The hypothesis that large-scale shocks accompanying spiral density waves are the main sources of cosmic-ray electrons for whole galactic disks has been tested utilizing results of 10.7 GHz observations of spiral galaxies. It is suggested that the 10.7 GHz emission of galactic disks is largely controlled by star-forming processes, and that large-scale shocks apparently play a minor role.


Minor Role Density Wave Spiral Galaxy Galactic Disk Observational Report 
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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • M. Urbanik
    • 1
  • R. Beck
    • 2
  • U. Klein
    • 3
  • R. Gräve
    • 2
  1. 1.Astronomical ObservatoryJagiellonian UniversityKrakowPoland
  2. 2.Max-Planck-Institut für RadioastronomieBonnF.R.G.
  3. 3.Radioastronomisches Institut der Universität BonnF.R.G.

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