1. 3C293: Beams in a Rotating Gaseous Disk
- Author
-
Wil van Breugel
- Subjects
Core (optical fiber) ,Physics ,Interstellar medium ,Optical imaging ,Source structure ,Deflection (physics) ,Astrophysics ,Halo ,Astronomical spectroscopy ,Ram pressure - Abstract
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.
- Published
- 1983
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