Abstract
The B array of the VLA has observed a sample of seven H II galaxies at 325 and 1489 MHz; the radio continuum spectra thus obtained exhibit a wide variety of spectral shapes, but four show a significant flattening toward lower frequencies. A detailed discussion is conducted of this LF flattening, invoking several radio emission and absorption mechanisms and energy losses of relativistic electrons. Such model-dependent parameters as the spectral index of injected electrons, the radio-emission spectral index, the thermal electron density, and the age of the relativistic electrons, are derived.
Original language | English |
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Pages (from-to) | 626-649 |
Journal | The Astrophysical Journal |
Volume | 410 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1993 |