Moderate correlation between the accretion disk and jet power in a large sample of Fermi blazars

Rajguru, Garima; Chatterjee, Ritaban

doi:10.1103/physrevd.106.063001

Cited by 3 publications

(2 citation statements)

References 58 publications

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“…The tests of Spearman (r = 0.41, P = 0.01) and Kendall tau (r = 0.29, P = 0.009) also show a significant correlation between jet kinetic power and accretion disk luminosity for the whole sample. Rajguru & Chatterjee (2022) studied the relation between jet power and accretion disk luminosity using a large sample of Fermi blazars. They found a weak correlation after excluding the common redshift dependence.…”

Section: The Jet Power Versus Accretion Disk Luminositymentioning

confidence: 99%

General Physical Properties of Gamma-Ray-emitting Radio Galaxies

Chen

Fan

et al. 2023

ApJS

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We study the radio galaxies with known redshifts detected by the Fermi satellite after 10 yr of data (4FGL-DR2). We use a one-zone leptonic model to fit the quasi-simultaneous multiwavelength data of these radio galaxies and study the distributions of the derived physical parameters as a function of black hole mass and accretion disk luminosity. The main results are as follows. (1) We find that the jet kinetic power of most radio galaxies can be explained by the hybrid jet model based on ADAFs surrounding Kerr black holes. (2) After excluding the redshift, there is a significant correlation between the radiation jet power and the accretion disk luminosity, while the jet kinetic power is weakly correlated with the accretion disk luminosity. (3) We also find a significant correlation between inverse Compton luminosity and synchrotron luminosity. The slope of the correlation for radio galaxies is consistent with the synchrotron self-Compton (SSC) process. The result may suggest that the high-energy components of radio galaxies are dominated by the SSC process.

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Section: The Jet Power Versus Accretion Disk Luminositymentioning

confidence: 99%

General Physical Properties of Gamma-Ray-emitting Radio Galaxies

Chen

Fan

et al. 2023

ApJS

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“…What's more, the jet power is larger than the luminosity of accretion disk (Ghisellini et al 2014) 24 , which implies that other physical parameters play an important role in determining jet power besides accretion 29 , such as the spin of supermassive black holes. Recently, Rajguru & Chatterjee (2022) 30 re-studied the relationship between jet and accretion using a large sample of Fermi blazars and found that there was no significant relationship between jet and accretion when excluding the effect of redshift. This result may further confirm that the relativistic jet mainly comes from the rotational energy of the supermassive black hole.…”

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confidence: 99%

Evidence for the astrophysics of rotational energy extraction from a supermassive black hole

Chen

2023

Preprint

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Theoretical models predict that the power of relativistic jets of active galactic nuclei arises from the spin of the central supermassive black holes. In the Blandford-Znajek mechanism{\cite{blandford77}}, if relativistic jets are powered by a Poynting flux, the jet power of Poynting flux (P$_{B}$) depends on the spin of the supermassive black hole. However, there has been a lack of observational evidence to support this theory. Here we report an analysis of archival observations of a sample of supermassive black holes. We find a significant correlation between the jet power of Poynting flux, as measured through the one-zone leptonic model\cite{Massaro2006, tramacere2009, Tramacere2011, Tramacere2020}, and the spin of supermassive black holes was measured by using X-ray Reflection Spectroscopy\cite{Reynolds2014, Vasudevan2016,Reynolds2019,Reynolds2021}, which is consistent with the theoretical model\cite{blandford77, Ghisellini2006} and numerical simulations{\cite{Koide2002,McKinney2005b, Tanabe2008}}. The jet power of Poynting flux can be explained by BZ mechanism without the need of other jet models. These results provide for the first time observational evidence that the rotational energy extraction from a supermassive black hole enhances the relativistic jets of Poynting flux.

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Jet power extracted from ADAFs and the application to Fermi BL Lacertae objects

Chen(陈永云),

Gu(顾秋生),

Fan(樊军辉)

et al. 2023

Monthly Notices of the Royal Astronomical Society

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We calculate the jet power of the Blandford–Znajek (BZ) model and the hybrid model based on the self-similar solution of advection-dominated accretion flows (ADAFs). We study the formation mechanism of the jets of BL Lacertae (BL Lacs) with known redshifts detected by the Fermi satellite after 10 yr of data (4FGL-DR2). The kinetic power of the jets of Fermi BL Lacs is estimated through radio luminosity. The main results are as follows. (1) We find that the jet kinetic power of about 72 per cent intermediate peak frequency BL Lacs (IBL) and 94 per cent high-frequency peak BL Lacs (HBL) can be explained by the hybrid jet model based on ADAFs surrounding Kerr black holes. However, the jet kinetic power of about 74 per cent low-frequency peak BL Lacs (LBL) cannot be explained by the BZ jet model or the hybrid model. (2) The LBL has a higher accretion rate than IBL and HBL. About 14 per cent IBL and 62 per cent HBL have pure optically thin ADAFs. However, 7 per cent LBL may have a hybrid structure consisting of an standard thin disc (SS) plus optically thin ADAFs. (3) After excluding the redshift dependence, there is a weak correlation between the jet kinetic power and the accretion disc luminosity for Fermi BL Lacs. (4) There is a significant correlation between inverse-Compton luminosity and synchrotron luminosity for Fermi BL Lacs. The slope of the relation between inverse-Compton luminosity and synchrotron luminosity for Fermi BL Lacs is consistent with the synchrotron self-Compton (SSC) process. The result may suggest that the high-energy components of Fermi BL Lacs are dominated by the SSC process.

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Moderate correlation between the accretion disk and jet power in a large sample of Fermi blazars

Cited by 3 publications

References 58 publications

General Physical Properties of Gamma-Ray-emitting Radio Galaxies

General Physical Properties of Gamma-Ray-emitting Radio Galaxies

Evidence for the astrophysics of rotational energy extraction from a supermassive black hole

Jet power extracted from ADAFs and the application to Fermi BL Lacertae objects

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