Analysis of Jet Dynamics and Collimation Characteristics of 0241+622 on Parsec Scales
arXiv:2506.04661 · doi:10.3847/1538-4357/addd10
Abstract
We conducted a detailed analysis of the jet structure and dynamics of the source 0241+622 on milliarcsecond (mas) scales. We stacked images from multiple epochs to better recover the crosssection of the jet. By analyzing the relationship between jet width and distance, we observed that the jet exhibits a parabolic shape from the core, spanning a region from 0.12 to 6.1 mas. This structure suggests the acceleration and collimation processes of the jet. Beyond 18 mas from the core, the jet adopts a conical shape, and the expansion speed of the jet becomes faster within the range from 4500 to 6500 mas. We obtained the core shift of this source using five pairs of data from VLBA at 1.6 GHz to 43 GHz. Based on previous studies, through proper motion analysis of the jet components, we estimated the angle between the jet and the line of sight to be approximately 65.7°, so 1 mas corresponds to 0.95 pc (de-projected distance). We then obtained the velocity field of the source within 3.14 mas from the central black hole and found that the jet exhibits accelerated motion within this range. At approximately 6.1 mas from the core, we observed that the jet width begins to decrease, which we identified as possibly corresponding to the Bondi radius of this source. The reduction in jet width may be related to changes in the external environmental pressure, particularly within the Bondi radius, indicating that the jet dynamics and collimation characteristics are strongly influenced by the surrounding medium conditions.
arXiv comment18 pages, 11 figures, published in The Astrophysical Journal, https://doi.org/10.3847/1538-4357/addd10
References in corpus (51)
- Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- The Co-Evolution of Galaxies and Supermassive Black Holes: Insights from Surveys of the Contemporary Universe
- General Relativistic Magnetohydrodynamic Simulations of Magnetically Choked Accretion Flows around Black Holes
- Doppler factors, Lorentz factors and viewing angles for quasars, BL Lacertae objects and radio galaxies
- Magnetic acceleration of relativistic AGN jets
- The Structure and Dynamics of the Sub-parsec Scale Jet in M87 Based on 50 VLBA Observations Over 17 Years at 43 GHz
- The Structure of the M87 Jet: A Transition from Parabolic to Conical Streamlines
- MOJAVE: XV. VLBA 15 GHz Total Intensity and Polarization Maps of 437 Parsec-Scale AGN Jets From 1996-2017
- Simulations of Ultrarelativistic Magnetodynamic Jets from Gamma-ray Burst Engines
- Kinematics of the jet in M87 on scales of 100 -- 1000 Schwarzschild radii
- MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-Loud Blazars
- Magnetic Driving of Relativistic Outflows in Active Galactic Nuclei. I. Interpretation of Parsec-Scale Accelerations
- Asymptotic structure of Poynting dominated jets
- MOJAVE - XIV. Shapes and opening angles of AGN jets
- MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. XI. Spectral distributions
- A wide and collimated radio jet in 3C 84 on the scale of a few hundred gravitational radii
- A transition from parabolic to conical shape as a common effect in nearby AGN jets
- The Parabolic Jet Structure in M87 as a Magnetohydrodynamic Nozzle
- Catching the Radio Flare in CTA 102 III. Core-Shift and Spectral Analysis
- Discovery of Sub- to Superluminal Motions in the M87 Jet: An Implication of the Acceleration from Sub-relativistic to Relativistic Speeds
- MOJAVE XIX: Brightness Temperatures and Intrinsic Properties of Blazar Jets
- The stratified two-sided jet of Cygnus A. Acceleration and collimation
- Radio observations of active galactic nuclei with mm-VLBI
- F-GAMMA: Variability Doppler factors of blazars from multiwavelength monitoring
- Anatomy of helical relativistic jets: The case of S5 0836+710
- Collimation, Acceleration and Recollimation Shock in the Jet of Gamma-Ray-emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy 1H 0323+342
- Aligning VLBI Images of Active Galactic Nuclei at Different Frequencies
- Kinematics of the M87 jet in the collimation zone: gradual acceleration and velocity stratification
- Jet collimation in NGC 315 and other nearby AGN
- The core shift effect in the blazar 3C 454.3
- Pilot KaVA monitoring on the M87 jet: confirming the inner jet structure and superluminal motions at sub-pc scales
- Optical Proper Motion Measurements of the M87 Jet: New Results from the Hubble Space Telescope
- Catching the radio flare in CTA 102: II. VLBI kinematic analysis
- Jet collimation and acceleration in the giant radio galaxy NGC 315
- Studies of the Jet in BL Lacertae. II. Superluminal Alfvén Waves
- Structural Transition in the NGC 6251 Jet: An Interplay with the Supermassive Black Hole and Its Host Galaxy
- The collimation of magnetic jets by disk winds
- The Two-sided Jet Structures of NGC 1052 at Scales from 300 to Schwarzschild Radii
- Collimation of the relativistic jet in the quasar 3C 273
- Compact Bright Radio-loud AGNs -- III. A Large VLBA Survey at 43 GHz
- The TeV-emitting radio galaxy 3C 264. VLBI kinematics and SED modeling
- Determination of Central Engine Position and Accretion Disk Structure in NGC 4261 by Core Shift Measurements
- Physical parameters of active galactic nuclei derived from properties of jet geometry transition region
- The jet collimation profile at high resolution in BL Lacertae
- Imaging and variability studies of CTA~102 during the 2016 January -ray flare
- Dual-high-frequency VLBI study of blazar-jet brightness-temperature gradients and collimation profiles
- Localizing the -ray emitting region in the blazar TXS 2013+370
- Transverse Oscillations of the M87 Jet Revealed by KaVA Observations
- Jet Collimation and Acceleration in the Flat Spectrum Radio Quasar 1928+738
- Kinematics and Collimation of the Two-Sided Jets in NGC 4261: VLBI Study on Sub-parsec Scales
- Investigating Non-linear and Stochastic Hard X-ray Variability of Active Galactic Nuclei using Recurrence Analysis