The Bardeen-Petterson effect as the precession mechanism for the radio galaxy 3C 84 (NGC 1275)

Details The Bardeen-Petterson effect as the precession mechanism for the radio galaxy 3C 84 (NGC 1275) The Bardeen-Petterson effect as the precession mechanism for the radio galaxy 3C 84 (NGC 1275)

Feb 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011iaus..275..182t&link_type=abstract

Jets at all Scales, Proceedings of the International Astronomical Union, IAU Symposium, Volume 275, p. 182-183

Astronomy and Astrophysics

Astronomy

Scientific paper

In this work we propose the Bardeen-Petterson effect as the precession mechanism of the jet precession in NGC 1275. To check if this is true we have estimated the angular momentum ratio and the aligment timescale predict by the theory and compared with the numerical results presented in the literature. We were able to explain the precession period assuming an accretion disk with column surface density in the form of a power law with exponent 0.6 < s < 0.7 and a black hole rotation with a spin of 0.23 < a*<0.4.

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