Helical magnetic field structure in 3C 273. A Faraday rotation analysis using multi-frequency polarimetric VLBA data
arXiv:2412.18250 · doi:10.1051/0004-6361/202453542
Abstract
We present a study on rotation measure (RM) of the quasar 3C 273. This analysis aims to discern the magnetic field structure and its temporal evolution. The quasar 3C 273 is one of the most studied active galactic nuclei due to its high brightness, strong polarization, and proximity, which enables resolving the transverse structure of its jet in detail. We used polarized data from 2014, collected at six frequencies (5, 8, 15, 22, 43, 86 GHz) with the Very Long Baseline Array, to produce total and linear polarization intensity images, as well as RM maps. Our analysis reveals a well-defined transverse RM gradient across the jet, indicating a helical, ordered magnetic field that threads the jet and likely contributes to its collimation. Furthermore, we identified temporal variations in the RM magnitude when compared with prior observations. These temporal variations show that the environment around the jet is dynamic, with changes in the density and magnetic field strength of the sheath that are possibly caused by interactions with the surrounding medium.
References in corpus (35)
- Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
- First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring
- Relativistic Jets in Active Galactic Nuclei
- First M87 Event Horizon Telescope Results. VIII. Magnetic Field Structure near The Event Horizon
- MOJAVE: Monitoring of Jets in AGN with VLBA Experiments. V. Multi-epoch VLBA Images
- Kinematics of Parsec-Scale Jets of Gamma-Ray Blazars at 43~GHz within the VLBA-BU-BLAZAR Program
- MOJAVE. XVII. Jet Kinematics and Parent Population Properties of Relativistically Beamed Radio-Loud Blazars
- MOJAVE: Monitoring of Jets in Active Galactic Nuclei with VLBA Experiments. VIII. Faraday rotation in parsec-scale AGN jets
- A Helical Magnetic Field in the Jet of 3C 273
- High-Sensitivity 86GHz (3.5mm) VLBI Observations of M87: Deep Imaging of the Jet Base at a 10 Schwarzschild-Radius Resolution
- Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron. I. Imaging BL Lacertae at 21 microarcsecond resolution
- MOJAVE: XVIII. Kinematics and Inner Jet Evolution of Bright Radio-Loud Active Galaxies
- Millimeter light curves of Sagittarius A* observed during the 2017 Event Horizon Telescope campaign
- Faraday rotation and polarization gradients in the jet of 3C~120: Interaction with the external medium and a helical magnetic field?
- RadioAstron Observations of the Quasar 3C273: a Challenge to the Brightness Temperature Limit
- Faraday Rotation Measure Gradients from a Helical Magnetic Field in 3C 273
- Radio observations of active galactic nuclei with mm-VLBI
- Aligning VLBI Images of Active Galactic Nuclei at Different Frequencies
- The radio-ultraviolet spectral energy distribution of the jet in 3C273
- Multifrequency VLBA Monitoring of 3C 273 during the INTEGRAL Campaign in 2003 - I. Kinematics of the Parsec Scale Jet from 43 GHz Data
- Time Variable Faraday Rotation Measures of 3C-273 and 3C-279
- Reading M87's DNA: A Double Helix revealing a large scale Helical Magnetic Field
- On the source of Faraday rotation in the jet of the radio galaxy 3C120
- Total and linearly polarized synchrotron emission from overpressured magnetized relativistic jets
- Filamentary structures as the origin of blazar jet radio variability
- Time Variation of Rotation Measure Gradient in 3C 273 Jet
- High-Fidelity VLA Imaging of the Radio Structure of 3C273
- Full-Stokes polarimetry with circularly polarized feeds - Sources with stable linear and circular polarization in the GHz regime
- Probing the innermost regions of AGN jets and their magnetic fields with RadioAstron II. Observations of 3C 273 at minimum activity
- F-GAMMA: Multi-frequency radio monitoring of Fermi blazars. The 2.64 to 43 GHz Effelsberg light curves from 2007-2015
- Evidence of internal rotation and a helical magnetic field in the jet of the quasar NRAO150
- Collimation of the relativistic jet in the quasar 3C 273
- Parsec Scale Faraday-Rotation Structure Across the Jets of 9 Active Galactic Nuclei
- The Event Horizon Telescope Image of the Quasar NRAO 530
- An oversized magnetic sheath wrapping around the parsec-scale jet in 3C 273