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Discovery of Helical Magnetic Fields in AGN, and CME and Ejection of Large-Scale Magnetic Fields from AGN

Published online by Cambridge University Press:  26 May 2016

Han-Shu Chu ,
L. B. Baath ,
Fu-Jun Zhang  and
R. E. Spencer
Han-Shu Chu
Affiliation:
Purple Mountain Observatory, China Academy of Sciences, Nanjing 210008, China
L. B. Baath
Affiliation:
Center for Imaging Technologies, University of Halmstad, S-301 18 Halmstad, Sweden
Fu-Jun Zhang
Affiliation:
Shanghai Observatory, China Academy of Sciences, Shanghai, China
R. E. Spencer
Affiliation:
University of Manchester, N.R.A.L., Jodrell Bank, UK

Abstract

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Magnetic Fields are the crucial and most important ingredient involved in the processes of various violent activities in Active Galactic Nuclei and other celestial bodies. The generally accepted 2-sided symmetric-jets model of active galactic nuclei (AGN) does not include the magnetic fields. We present here the first direct detection of helical magnetic field in AGN, and the first direct detection of ejection of large scale magnetic fields from AGN. (CME) 2. The annular (helical) magnetic field is responsible for the collimation of the jet (through Pinch Effect) and may be of crucial importance for extraction of black hole rotational energy. 3. The CMEs are responsible for sporadic ejection of jet components in AGN, while the general accepted 2-sided jets pertain to the quiescent Jets. 4. Observations show that the CME with Asymmetric Jets can explain many phenomena and much of the morphological diversities in AGN.

Type
Part 8 Active Galaxies and their Nuclei
Information
Symposium - International Astronomical Union , Volume 214: High Energy Processes and Phenomena in Astrophysics , 2003 , pp. 303 - 308
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Chu, H.S. et al. 1992, in Sub-arcsecond Radio Astronomy, eds. Davis, R. J. & Booth, R. S. (Cambridge: Cambridge University Press), 249 Google Scholar
Chu, H.S., Baath, L.B., Rantakyro, F.T., Zhang, F.J., & Nicholson, G. 1996, A&A, 307, 15 Google Scholar
Chu, H. S., et al. 1998, in IAU Colloquium 164, Radio Emission from Galactic and Extragalactic Compact Sources, eds. Zensus, J. A., Taylor, G. B., & Wrobel, J.M., 121 Google Scholar
Parker, B.N., 1990, in Galactic and Intergalactic Magnetic Fields, IAU Symp. 140, eds. Beck, R. et al., 169 Google Scholar
van Breugel, W., Miley, G., & Heckman, T. 1984, AJ, 89, 5 Google Scholar
Zhang, F.J. et al. 1991, MNRAS, 250, 650 Google Scholar