Jet power, intrinsic γ-ray luminosity, and accretion in jetted AGNs

Chen, Yongyun; Gu, Qiusheng; Fan, J. H.; Yu, Xiaoling; Ding, Nan; Guo, Xiaotong; Xiong, Dingrong

doi:10.1093/mnras/stad065

Cited by 3 publications

(2 citation statements)

References 105 publications

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“…It is generally believed that there is a close connection between jets and accretion. Many authors have confirmed this relationship (e.g., Rawlings & Saunders 1991;Cao & Jiang 1999;Ghisellini et al 2010Ghisellini et al , 2014Sbarrato et al 2014;Chen et al 2015Chen et al , 2023. We also study this relationship for radio galaxies.…”

Section: The Jet Power Versus Accretion Disk Luminositysupporting

confidence: 62%

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 Luminositysupporting

confidence: 62%

General Physical Properties of Gamma-Ray-emitting Radio Galaxies

Chen

Fan

et al. 2023

ApJS

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“…The kinetic power is the key parameter to drive jet expansion, which is thought to be correlated with the black hole spin and mass [71,72,101] and the structure of the accretion disk [73,102,103]. The correlation between the jet kinetic power and black hole masses is indicated in several statistical analyses (e.g., [104][105][106]), while the observational correlation between the jet power and black hole spin is still a mystery (e.g., [107]). Except for the kinetic power, the size scale of an outflow in an individual object may be regulated by ages [95], inclination angle and interplay between jets and surrounding media [108].…”

Section: The Correlation Between the Size Scale Of Outflows And The M...mentioning

confidence: 99%

Intermediate-Mass Black Holes: The Essential Population to Explore the Unified Model for Accretion and Ejection Processes

Yang

2023

Galaxies

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We study radio and X-ray emissions from intermediate-mass black holes (IMBHs) and explore the unified model for accretion and ejection processes. The radio band survey of IMBH (candidate) hosted galaxies indicates that only a small fraction (∼0.6%) of them are radio-band active. In addition, very long baseline interferometry observations reveal parsec-scale radio emission of IMBHs, further resulting in a lower fraction of actively ejecting objects (radio emission is produced by IMBHs other than hosts), which is consistent with a long quiescent state in the evolution cycle of IMBHs. Most (75%, i.e., 3 out of 4 samples according to a recent mini-survey) of the radio-emitting IMBHs are associated with radio relics and there is also evidence of dual radio blobs from episodic ejecting phases. Taking the radio emission and the corresponding core X-ray emission of IMBH, we confirm a universal fundamental plane relation (FMP) of black hole activity. Furthermore, state transitions can be inferred by comparing a few cases in XRBs and IMBHs in FMP, i.e., both radio luminosity and emission regions evolve along these state transitions. These signatures and evidence suggest an analogy among all kinds of accretion systems which span from stellar mass to supermassive black holes, hinting at unified accretion and ejection physics. To validate the unified model, we explore the correlation between the scale of outflows (corresponding to ejection powers) and the masses of central engines; it shows that the largest scale of outflows LS^out follows a power-law correlation with the masses of accretors Mcore, i.e., logLS^out=(0.73±0.01)logMcore−(3.34±0.10). In conclusion, this work provides evidence to support the claim that the ejection (and accretion) process behaves as scale-invariant and their power is regulated by the masses of accretors.

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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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Jet power, intrinsic γ-ray luminosity, and accretion in jetted AGNs

Cited by 3 publications

References 105 publications

General Physical Properties of Gamma-Ray-emitting Radio Galaxies

General Physical Properties of Gamma-Ray-emitting Radio Galaxies

Intermediate-Mass Black Holes: The Essential Population to Explore the Unified Model for Accretion and Ejection Processes

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

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