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Interaction of Jets with Clouds in Extragalactic Radio Sources

Published online by Cambridge University Press:  19 July 2016

V. Fedorenko ,
A. Zentsova ,
T. J.-L. Courvoisier  and
S. Paltani
V. Fedorenko
Affiliation:
1Ioffe Phys. Tech. Institute, St.-Petersburg, Russia
A. Zentsova
Affiliation:
1Ioffe Phys. Tech. Institute, St.-Petersburg, Russia
T. J.-L. Courvoisier
Affiliation:
2Observatoire de Genève, CH-1290 Sauverny
S. Paltani
Affiliation:
3Institut d'Astronomie de l'Université de Lausanne, CH-1290 Chavannes-des-Bois

Extract

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Several points indicate that extragalactic jets can interact with dense gaseous obstacles which occur on their ways. Examples of these interactions are the knotty structure of the radio and optical jet in M 87 and in other objects. These observations have been interpreted by Blandford & Königl in terms of collision of a jet with supernova remnants. We have reanalysed this idea taking into account new observations and improvements in the theory of diffusive shock acceleration. We find that the model requires a very high supernova birthrate (∼ 1 SN/year), which is not observed. It is more probable that the “obstacles” are formed by the stellar winds from the red giants. We estimate that the value of the magnetic field is ∼ 10−5 G in the interaction region (r=1kpc) (paper in preparation).

Type
Poster Contributions: Emission Processes
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 346
Copyright
Copyright © Kluwer 1994 

References

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