On the dynamical evolution of hot spots in powerful radio loud AGNs

Abstract

We describe the dynamical evolution of hot spots velocity, pressure and mass density in radio loud active galactic nuclei (AGNs), taking proper account of (1) the conservations of the mass, momentum, and kinetic energy flux of the unshocked jet, (2) the deceleration process of the jet by shocks, and (3) the cocoon expansion without assuming the constant aspect ratio of the cocoon. By the detailed comparison with two dimensional relativistic hydrodynamic simulations, we show that our model well reproduces the whole evolution of relativistic jets. Our model can explain also the observational trends of the velocity, the pressure, the size, and mass density of hot spots in compact symmetric objects (CSOs) and FR II radio galaxies.

6 pages, 1 figure, accepted MNRAS

References in corpus (15)

• The X-Ray Jet of PKS 0637-752: Inverse Compton Radiation from the Cosmic Microwave Background ?
• Large scale jets in AGN: multiwavelength mapping
• The Properties of Poor Groups of Galaxies: II. X-ray and Optical Comparisons
• Chandra Observations of Cygnus A: Magnetic Field Strengths in the Hot Spots of a Radio Galaxy
• Does the plasma composition affect the long term evolution of relativistic jets?
• Kinematic Age Estimates for 4 Compact Symmetric Objects from the Pearson-Readhead Survey
• A Chandra detection of diffuse hard X-ray emission associated with the lobes of the radio galaxy 3C 452
• Constraints on the energetics and plasma composition of relativistic jets in FR II sources
• The Youngest Lobe-Dominated Radio Sources
• Propagation and Dynamics of Relativistic Jets
• Collimation of extragalactic radio jets in compact steep spectrum and larger sources
• Constraints on Evolutionary Properties of GHz Peaked Spectrum Galaxies
• Estimate of the total kinetic power and age of extragalactic jet by its cocoon dynamics: The case of Cygnus A
• Physical parameters in the hot spots and jets of Compact Symmetric Objects
• Spitzer IRAC Imaging of the Relativistic Jet from Superluminal Quasar PKS 0637-752

Cited by in corpus (31)

• Compact steep-spectrum and peaked-spectrum radio sources
• The Dynamic Evolution of Young Extragalactic Radio Sources
• On the Evolution of and High-Energy Emission from GHz-Peaked-Spectrum Sources
• Ultrahigh-energy Cosmic-ray Nuclei from Black Hole Jets: Recycling Galactic Cosmic Rays through Shear Acceleration
• X-ray Emitting GHz-Peaked Spectrum Galaxies: Testing a Dynamical-Radiative Model with Broad-Band Spectra
• A method of estimation of the dynamical age of FR II-type radio sources from multifrequency data
• Fermi Large Area Telescope Observations of the Active Galaxy 4C +55.17: Steady, Hard Gamma-Ray Emission and its Implications
• The estimate of kinetic powers of jets in FRII radio galaxies: existence of invisible components?
• The Fate of Young Radio Galaxies: Decelerations Inside Host Galaxies?
• Extragalactic MeV gamma-ray emission from cocoons of young radio galaxies
• On the origin of Fanaroff-Riley classification of radio galaxies: Deceleration of supersonic radio lobes
• Hysteresis of Backflow Imprinted in Collimated Jets
• First X-ray observations of Low-Power Compact Steep Spectrum Sources
• Kinematics of the Compact Symmetric Object OQ 208 revisited
• Testing Models of Radio Galaxy Evolution and the Cosmological Impact of FR II Radio Galaxies
• The radio structure of 3C 316, a galaxy with double-peaked narrow optical emission lines
• Calorimetry of Active Galactic Nucleus jets: testing plasma composition in Cygnus A
• Long-term FRII jet evolution in dense environments
• Evidence for a significant mixture of electron/positron pairs in FRII jets constrained by cocoon dynamics
• The Production of Ultra High Energy Cosmic Rays during the Early Epochs of Radio-loud AGN
• The Morphology and Dynamics of Relativistic Jets with Relativistic Equation of State
• VERA monitoring of the radio jet 3C 84 during 2007--2013: detection of non-linear motion
• The young radio lobe of 3C 84: inferred gas properties in the central 10 parsec
• Four hot DOGs in the microwave
• The Origin of High Energy Emission in the Young Radio Source PKS 1718-649
• LOFAR Measures the Hotspot Advance Speed of the High-Redshift Blazar S5 0836+710
• Gamma-ray-emitting quasar 0202$+$149: a CSS revisited
• A Novel Method for Estimating the Ambient Medium Density Around Distant Radio Sources from Their Observed Radio Spectra
• Fate of baby radio galaxies: Dead or Alive ?
• Identifying compact symmetric objects with high-precision VLBI and Gaia astrometry
• High energy emission from AGN cocoons in clusters of galaxies