The relation between black hole masses and Lorentz factors of the jet components in blazars

Abstract

We explore the relation between black hole mass ($M_{\mathrm{BH}}$) and the motion of the jet components for a sample of blazars. The Very Long Baseline Array (VLBA) 2cm Survey and its continuation: Monitoring of Jets in active galactic nuclei (AGNs) with VLBA Experiments (MOJAVE) have observed 278 radio-loud AGNs, of which 146 blazars have reliable measurements on their apparent velocities of jet components. We calculate the minimal Lorentz factors for these sources from their measured apparent velocities, and their black hole masses are estimated with their broad-line widths. A significant intrinsic correlation is found between black hole masses and the minimal Lorentz factors of the jet components, which the Eddington ratio is only weakly correlated with the minimal Lorentz factor, which may imply that the Blandford-Znajek (BZ) mechanism may dominate over the Blandford-Payne (BP) mechanism for the jet acceleration (at least) in blazars.

arXiv comment18 pages, 5 figures, 3 tables, submitted to ChJAA

References in corpus (22)

• Reverberation Measurements for 17 Quasars and the Size-Mass-Luminosity Relations in Active Galactic Nuclei
• Observational constraints on growth of massive black holes
• Central Masses and Broad-Line Region Sizes of Active Galactic Nuclei: I. Comparing the Photoionization and Reverberation Techniques
• Sub-milliarcsecond Imaging of Quasars and Active Galactic Nuclei III. Kinematics of Parsec-Scale Radio Jets
• MOJAVE: Monitoring of Jets in AGN with VLBA Experiments - I. First-Epoch 15 GHz Linear Polarization Images
• On Black Hole Masses and Radio Loudness in AGN
• The HST Survey of BL Lacertae Objects. II. Host Galaxies
• Relativistic Beaming and the Intrinsic Properties of Extragalactic Radio Jets
• Black hole mass and spin coevolution by mergers
• Comparing and calibrating black hole mass estimators for distant active galactic nuclei
• Black-Hole Spin and Galactic Morphology
• The jet power, radio loudness and black hole mass in radio loud AGNs
• The black hole mass of low redshift radiogalaxies
• The Profiles of H-Beta and [OIII] 5007 in Radio-Loud Quasars
• On the masses of black-holes in radio-loud quasars
• Black hole mass estimation with a relation between the BLR size and emission line luminosity of AGN
• Reverberation Mapping and the Physics of Active Galactic Nuclei
• Correlation between radio and broad-line emissions in radio-loud quasars
• Black Hole Mass Estimates of Radio Selected Quasars
• Measurement of the Broad Line Region Size in Two Bright Quasars
• The relation between extended radio and line emission for radio-loud quasars
• Relation between radio core length and black hole mass for active galactic nuclei

Cited by in corpus (6)

• Intrinsic $\gamma$-ray luminosity, black hole mass, jet and accretion in Fermi blazars
• What governs the bulk velocity of the jet components in active galactic nuclei?
• Detection of a possible high-confidence radio quasi-periodic oscillation in the BL Lac PKS J2134-0153
• The Estimation of Fundamental Physics Parameters for Fermi-LAT Blazars
• The jets-accretion relation, mass-luminosity relation in Fermi blazars
• Resolving the inner jet of PKS 1749+096 with super-resolution VLBA images at 7 mm