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Time Dependent Energy Supply in Radio Sources and Morphology of Radio Lobes

Published online by Cambridge University Press:  14 August 2015

W. A. Christiansen ,
A. G. Pacholczyk  and
John S. Scott
W. A. Christiansen
Affiliation:
Moorehead Observatory, University of North Carolina
A. G. Pacholczyk
Affiliation:
Pachart Corporation, Tucson, Arizona
John S. Scott
Affiliation:
Steward Observatory, University of Arizona

Extract

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The fact that radio jets, which are often one-sided, are nevertheless associated with extended lobes of nearly equal luminosity indicates when analyzed in detail (1) that the energy supply by the nuclear engine to the lobes is strongly time-dependent. Time dependent ejection from the nucleus of a parent galaxy produces low density channels which are ploughed in the background medium by the passage of intermittently ejected radio emitting plasmons (2), (3), (4) and (5). An analysis of the dynamics of radio emitting plasmons in such channels leads to unique morphological features consistent with observations of both narrow jets (resulting from splashback or reflections from the channel ends) and conical lobes (resulting from slower hydrodynamic deceleration).

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 97: Extragalactic Radio Sources , 1982 , pp. 51 - 52
Copyright
Copyright © Reidel 1982 

References

(1). Christiansen, W.A. and Scott, J.S. 1981 (preprint) Google Scholar
(2). Christiansen, W.A., Pacholczyk, A.G. and Scott, J.S. 1981 (preprint A) Google Scholar
(3). Christiansen, W.A. 1973 M.N.R.A.S. 164, 211 CrossRefGoogle Scholar
(4). Christiansen, W.A., Pacholczyk, A.G. and Scott, J.S. 1979 Nature 266, 593 Google Scholar
(5). Christiansen, W.A., Pacholczyk, A.G. and Scott, J.S. 1981 (preprint B) Google Scholar