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Thermal infrared and nonthermal radio - Remarkable correlation in disks of galaxies
The Astrophysical Journal1985Vol. 298, pp. L7–L7
Citations Over TimeTop 12% of 1985 papers
Abstract
A tight, linear correlation is established between the far-infrared flux measured by IRAS and the nonthermal radio flux density (at 1.4 GHz) from disks of spiral galaxies. This correlation defines a ratio of infrared to radio fluxes that is characteristic of star formation activity. Galaxies with nuclear starbursts seem to follow the correlation. If the far-infrared is reradiated luminosity from young massive stars, then the supernova remnants alone account for less than 10 percent of the radio emission. These results indicate a close coupling between dust heating and cosmic-ray generation and confinement in a wide range of conditions.
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