Astronomy and Astrophysics – Astrophysics
Scientific paper
1997-06-20
Astrophys.Space Sci.248:177-190,1997
Astronomy and Astrophysics
Astrophysics
13 pages; Latex; 7 encapsulated postscript figures. In the Proceedings of the NGC 1068 Workshop, Ap. & S.S., in press, eds. J.
Scientific paper
10.1023/A:1000525513140
The radio jet axis of NGC 1068 is characterised by energetic activity from x-ray to radio wavelengths. Detailed kinematic and polarization studies have shown that this activity is confined to bipolar cones centered on the AGN which intersect the plane of the disk. Thus, molecular clouds at 1 kpc distance along this axis are an important probe of the nuclear ionizing luminosity and spectrum. Extended MIR emission coincident with the clouds is reasonably understood by dust heated to high temperatures by the nuclear radiation field. This model predicts that the nuclear spectrum is quasar-like (power law + blue excess) with a luminosity 2-5 times higher than inferred by Pier et al. Consequently, there is little or no polyaromatic hydrocarbon (PAH) emission associated with the radio-axis molecular clouds. We review this model in the light of new observations. A multi-waveband collage is included to illustrate the possible orientations of the double cones to our line of sight and the galaxian plane.
Bland-Hawthorn Jonathan
Cecil Gerald N.
Lumsden Stuart L.
Voit Gerard Mark
Weisheit Jon C.
No associations
LandOfFree
Strict Limits on the Ionizing Luminosity in NGC 1068 from Jet-axis Molecular Clouds 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 Strict Limits on the Ionizing Luminosity in NGC 1068 from Jet-axis Molecular Clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Strict Limits on the Ionizing Luminosity in NGC 1068 from Jet-axis Molecular Clouds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-256365