A Research Of The Correlation Between Jet And Accretion In Active Galaxy Nuclei

The system composed of black hole and accretion disk is usually regarded as the central engine of high-energy dense celestial bodies such as active galactic nuclei.So far,various accretion theories have been proposed to explain the physical characteristics and energy mechanisms of active galactic nuclei,microquasars,and X-ray binaries.This work focuses on the standard thin disk theory and the advection dominated accretion flow(ADAF)theory under the framework of general relativity,and explains some of the physical properties of the two accretion modes under the framework of general relativity;research the large-scale magnetic field extracting the black hole rotation energy mechanism,including the BZ mechanism and the MC mechanism,under the black hole magnetosphere theory.Based on the reasonable large-scale configuration,the electromagnetic jet model under the standard thin disk and the ADAF theory are proposed,respectively;after removing the influence of Doppler brightening of clustering effect,the intrinsic y-ray luminosity is used to re-estimate the jet power and black hole mass of the two subclasses of blazars,and to study the correlation between intrinsic y-ray luminosity,jet power,broad line region luminosity and black hole mass.The following is a main summary of the work:In chapter 3,we adopt the equivalent circuit method of accretion disk large-scale magnetic field energy enhancement,based on electromagnetic theory,study the jet model from the standard thin accretion disk,and derive the analytical formula of jet power.We find that the inner area of the accretion disk with a radial radius parameter??10 contributes most of the jet power.We study the jet model of the ADAF based on electromagnetic theory,and derive the analytical formula of jet power.The phenomenon that the jet power is concentrated in the inner zone under this model is more obvious than in the standard thin accretion disk.The inner zone of the accretion jet with a radial radius parameter ??3 provides almost all the power of the jet.The jet power in this model is also affected by the radius shift factor f.By studying the correlation between jet and accretion disk radiation,we find that regardless of whether the black hole rotates or not,the radiation flux F of the accretion disk when the jet exists is significantly lower than the radiation flux F when there is no jet;when the disk radial radius parameter ? closing to 2,the radiation flux has a maximum value;the radiation flux F of the accretion disk increases with the increase of the black hole rotation parameter ?_*.In Chapter 4,we have studied the effects of removing the relativistic clustering effect on radio and optical bands,and found that the jet power of FSRQs has a strong correlation with the mass of black holes,while the jet power of BL Lacs is correlated with the mass of black holes very weak.After adding the parameter of the broad line region luminosity,it is found that the jet power obviously has a strong correlation with the broad line region luminosity.From this speculation,the jet power of the blazar depends not only on the central black hole mass M,but also on the accretion rate ?_*.