Radio spectral changes in the haloes of galaxies seen edge-on

Details Radio spectral changes in the haloes of galaxies seen edge-on Radio spectral changes in the haloes of galaxies seen edge-on

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.168...23v&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 168, no. 1, June 1990, p. 23-37.

Astronomy and Astrophysics

Astrophysics

3

Disk Galaxies, Halos, Interstellar Gas, Radio Spectra, Spectrum Analysis, Astronomical Models, Cosmic Rays, Electron Energy, Monte Carlo Method, Transport Theory

Scientific paper

Results of a Monte Carlo study of the one-dimensional propagation of cosmic-ray electrons in the galactic photon field are presented. The effect of a galactic wind on the change of the radio spectral index with height above the galactic plane is investigated in particular. The dependence of this relation on various physical quantities is also investigated. A comparison of the model results with the spectral index-height relation on NGC 4631 and NGC 891 strongly suggests that these two galaxies have dynamic haloes.

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