Spectral Properties of the Core and the VLBI-Jets of Cygnus A

Details Spectral Properties of the Core and the VLBI-Jets of Cygnus A Spectral Properties of the Core and the VLBI-Jets of Cygnus A

2004-09-14

arxiv.org/abs/astro-ph/0409330v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures, Proceedings of the 7th EVN Symposium held in Toledo, Spain in October 2004, needs evn2004.cls

Scientific paper

We present a detailed VLBI study of the spectral properties of the inner core region of the radio galaxy Cygnus A at 5 GHz, 15 GHz, 22 GHz, 43 GHz and 86 GHz. Our observations include an epoch using phase-referencing at 15 GHz and 22 GHz and the first successful VLBI observations of Cygnus A at 86 GHz. We find a pronounced two-sided jet structure, with a steep spectrum along the jet and an inverted spectrum towards the counter-jet. The inverted spectrum and the frequency-dependent jet-to-counter-jet ratio suggest that the inner counter-jet is covered by a circum-nuclear absorber as it is proposed by the unified scheme.

Affiliated with

Also associated with

No associations

Rating

Spectral Properties of the Core and the VLBI-Jets of Cygnus A does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Spectral Properties of the Core and the VLBI-Jets of Cygnus A, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral Properties of the Core and the VLBI-Jets of Cygnus A will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-414802