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Optical Spectra of Four Objects Identified with Variable Radio Sources

V. Chavushyan·R. Mujica·A. G. Gorshkov·V. K. Konnikova·M. G. Mingaliev
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Abstract

We obtained optical spectra of four objects identified with variable radio sources. Three objects (0029+0554, 0400+0550, 2245+0500) were found to be quasars with redshifts of 1.314, 0.761, and 1.091. One object (2349+0534) has a continuum spectrum characteristic of BL Lac objects. We analyze spectra of the radio sources in the range 0.97-21.7 GHz for the epoch 1997 and in the range 3.9-11.1 GHz for the epoch 1990, as well as the pattern of variability of their flux densities on time scales of 1.5 and 7 years.

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V. Chavushyan, R. Mujica, A. G. Gorshkov, V. K. Konnikova, M. G. Mingaliev. 2003-03-26. Optical Spectra of Four Objects Identified with Variable Radio Sources. https://doi.org/10.1134/1.20400

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