Non-Uniform Free-Free Absorption in the GPS Radio Galaxy 0108+388

Details Non-Uniform Free-Free Absorption in the GPS Radio Galaxy 0108+388 Non-Uniform Free-Free Absorption in the GPS Radio Galaxy 0108+388

2000-11-20

arxiv.org/abs/astro-ph/0011372v1

Astrophys.J.550:160-171,2001

Astronomy and Astrophysics

Astrophysics

13 pages, including 8 figures and 3 tables. Accepted for publication in ApJ

Scientific paper

10.1086/319729

We have observed the canonical gigahertz-peaked spectrum source 0108+388 with the VLBA at a range of frequencies above and below the spectral peak. The activity that dominates the radio emission from 0108+388, which is also classified 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 non-uniform gas, possibly in the form of a disk in the central tens of parsecs.

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