Nonuniform Free-free Absorption in the Gps Radio Galaxy 0108]388
نویسندگان
چکیده
ABSTRACT We have observed the canonical gigahertz-peaked spectrum source 0108]388 with the Very Long Baseline Array at a range of frequencies above and below the spectral peak. The activity that dominates the radio emission from 0108]388, which is also classiÐed as a compact symmetric object, is thought to be less than 1000 years old. We present strong evidence that the spectral turnover in 0108]388 results from free-free absorption by nonuniform gas, possibly in the form of a disk in the central tens of parsecs. Subject headings : galaxies : active È galaxies : individual (0108]388) È galaxies : ISM È galaxies : nuclei È methods : data analysis È radio continuum: galaxies
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