Jets, cones and the alignment effect in high-z radio galaxies

Details Jets, cones and the alignment effect in high-z radio galaxies Jets, cones and the alignment effect in high-z radio galaxies

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997hst..prop.7856t&link_type=abstract

HST Proposal ID #7856

Physics

Hst Proposal Id #7856 Agn And Quasars

Scientific paper

Two distinct physical mechanisms -- anisotropic quasar illumination and jet-cloud interactions -- are required to explain the general properties of high-z {z > 0.5} radio galaxies. Although the detection of scattered quasar features in many powerful radio galaxies demonstrates the importance of quasar illumination, the highly collimated structures visible in recent HST images are inconsistent with illumination of the ISM by the broad radiation cones predicted by the unified schemes for powerful radio sources. We argue that the failure to detect the broad cones may be due in part to an observational selection effect: that the existing OIILambda3727 images are biased towards the high surface brightness shocked structures along the radio axis. Since the gas in the radiation cones will be highly ionized, the cones will be difficult to detect in the existing OIILambda3727 images, but readily detectable in OIIILambda5007 images. We predict that the high-z radio galaxies will have a markedly different appearance in OIIILambda5007 than in the existing OIILambda3727 images, and we propose to make a sensitive search for the OIII cones in three high redshift radio galaxies using NICMOS on the HST. The detection of the broad cones outside the main aligned structures would lead to a reconciliation of the jet-cloud interaction and quasar illumination models, whereas the failure to detect the broad cones in OIII would imply that the gas structures are intrinsically aligned along the radio axes of the high redshift sources.

Affiliated with

Also associated with

No associations

Rating

Jets, cones and the alignment effect in high-z radio galaxies 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 Jets, cones and the alignment effect in high-z radio galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jets, cones and the alignment effect in high-z radio galaxies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-896328