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Prediction of the Black-Hole Mass in 3C 273 by Multiband Observations

Published online by Cambridge University Press:  26 May 2016

Zhen Guo Ma  and
Xi Zhen Zhang
Zhen Guo Ma
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China
Xi Zhen Zhang
Affiliation:
National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, China

Abstract

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With the determined black-hole (BH) spin of 3C 273 by data-fitting to the detected iron Kα line emission in the soft X-ray band, the BH mass of the galaxy is predicted by formulations of both the observed disk-luminosity in the optical-UV band and the observed jet-precession in the radio band. The multiband synthesis suggests that the BH is supermassive, 2.4 × 109M⊙. Simultaneously, other physical parameters are self-consistently obtained at the precessing radius of 230.2rg: the accretion rate of the disk is 74.9M⊙ yr−1, the Shakura-Sunyaev viscosity α is 0.134, and the radial & orbital velocities of fluid elements are 4.3 × 10−8 and 6.6 × 10−2, respectively.

Type
Part 8 Active Galaxies and their Nuclei
Information
Symposium - International Astronomical Union , Volume 214: High Energy Processes and Phenomena in Astrophysics , 2003 , pp. 281 - 286
Copyright
Copyright © Astronomical Society of the Pacific 2003 

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