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A thin disk model for the high efficiency jet in powerful lobe-dominated FRII radio galaxies

Published online by Cambridge University Press:  23 June 2017

Shuang-Liang Li
Shuang-Liang Li*
Affiliation:
Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China; email: lisl@shao.ac.cn
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Abstract

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We propose a thin accretion disk with magnetically driven winds model to investigate the high jet efficiency phenomenon in lobe-dominated luminous FRII radio galaxies, which was reported by Fernandes et al. (2011) and Punsly (2011). It was found that the temperature of a thin disk with winds was much lower comparing with that of a standard thin disk because the winds take the most of energy released in the disk away, resulting in a much smaller raditive efficiency. Therefore, the jet efficiency can be very high even for conventional jet power. Our model can explain the observations quite well.

Keywords

accretionaccretion disksgalaxies: activeblack hole physicsgalaxies: magnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 12 , Symposium S324: New Frontiers in Black Hole Astrophysics , September 2016 , pp. 196 - 198
Copyright
Copyright © International Astronomical Union 2017 

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