The radio structure of radio-quiet quasars

Details The radio structure of radio-quiet quasars The radio structure of radio-quiet quasars

2006-06-21

arxiv.org/abs/astro-ph/0606540v1

Astronomy and Astrophysics

Astrophysics

14 pages, 15 figures, accepted for publication in A&A

Scientific paper

10.1051/0004-6361:20054311

We investigate the radio emitting structures of radio-quiet active galactic nuclei with an emphasis on radio-quiet quasars to study their connection to Seyfert galaxies. We present and analyse high-sensitivity VLA radio continuum images of 14 radio-quiet quasars and six Seyfert galaxies. Many of the low redshift radio-quiet quasars show radio structures that can be interpreted as jet-like outflows. However, the detection rate of extended radio structures on arcsecond scales among our sample decreases with increasing redshift and luminosity, most likely due to a lack of resolution. The morphologies of the detected radio emission indicate strong interactions of the jets with the surrounding medium. We also compare the radio data of seven quasars with corresponding HST images of the [OIII] emitting narrow-line region (NLR). We find that the scenario of interaction between the radio jet and the NLR gas is confirmed in two sources by structures in the NLR gas distribution as previously known for Seyfert galaxies. The extended radio structures of radio-quiet quasars at sub-arcsecond resolution are by no means different from that of Seyferts. Among the luminosities studied here, the morphological features found are similar in both types of objects while the overall size of the radio structures increases with luminosity. This supports the picture where radio-quiet quasars are the scaled-up versions of Seyfert galaxies. In addition to known luminosity relations we find a correlation of the NLR size and the radio size shared by quasars and Seyferts.

Affiliated with

Also associated with

No associations

Rating

The radio structure of radio-quiet quasars 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 The radio structure of radio-quiet quasars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The radio structure of radio-quiet quasars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-207657