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3C293: Beams in a Rotating Gaseous Disk

Published online by Cambridge University Press:  30 March 2016

Wil van Breugel
Wil van Breugel*
Affiliation:
Kitt Peak National Observatory, Tucson, Arizona

Extract

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The radio source 3C293 has a bright, steep spectrum (α ≃ 0.7; Sν ∝ ν-α ) radio core with kiloparsec-sized structure (Bridle, Fomalont & Cornwell 1981, (BFC)). The core is misaligned by ~35° with respect to the extended radio lobes and both the core and lobes have a Z-shaped morphology. To explain this misalignment and morpholoqy. BFC propose a model in which beams ‘refract’ (buoyantly deflect) in a static hot gaseous halo. Alternatively, Wilson & Ulvestad (1982) have proposed that the source structure may be caused by ram pressure deflection of beams propagating through a rotating gaseous disk. Our optical imaging and spectroscopic observations reported here support the latter model.

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 6: Highlights of Astronomy. As presented at the XVIIIth General Assembly of the IAU, 1982 , 1983 , pp. 739 - 740
Copyright
Copyright © Reidel 1983

References

Bridle, et al. 1981, A. J., 86, 1294.Google Scholar
Heckrhan, et al. 1981, Ap. J., 247, 403.Google Scholar
Heckman, et al. 1982, Ap. J., in press.Google Scholar
Wilson, A.S. and Ulvestad, J.S. 1982, preprint.Google Scholar