A new sample of gigahertz-peaked-spectrum, extra-galactic radio sources |
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Authors: | V G Panajyan |
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Institution: | (1) V. A. Ambartsumian Astrophysical Observatory, Byurakan, Armenia |
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Abstract: | A new sample of extra-Galactic radio sources having a peak in the continuous spectrum near 1 GHz has been compiled, using
data available in the literature on their radio flux densities, and some characteristic parameters of radio sources in this
sample have been calculated. The median value of the calculated spectral indices of radio sources in the sample is -0.95,
the median flux density at the peak (Sm) is 465 mJy, and almost half the radio sources (14 out of 30) have ultrasteep spectra, for which the spectral indices in
the high-frequency range are α <-1.0 (S ∝ vα).
Translated from Astrofizika, Vol. 41, No. 3, pp. 377–388, July–September, 1998. |
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