The origin of the nonthermal radio emission in normal disk galaxies

Details The origin of the nonthermal radio emission in normal disk galaxies The origin of the nonthermal radio emission in normal disk galaxies

Apr 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...120..219k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 120, no. 2, April 1983, p. 219-222.

Astronomy and Astrophysics

Astronomy

66

Disk Galaxies, Hydrogen Clouds, Nonthermal Radiation, Radio Emission, Radio Sources (Astronomy), Correlation, Emission Spectra, H Alpha Line, Radio Spectra

Scientific paper

A strong correlation exists between the total nonthermal radio flux of a spiral galaxy and its integrated Hα emission line flux. The correlation is much tighter than the corresponding relationship between total radio flux and the integrated optical magnitude of the galaxy. The most straightforward interpretation of this result is that the relativistic electrons responsible for the nonthermal radio emission are produced primarily by massive young stars, not by the old disk population.

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