A comparison between Faraday Tomography and Synchrotron Polarization Gradients
arXiv:1901.07731 · doi:10.3847/1538-4357/ab578c
Abstract
Observations of synchrotron polarization at multiple frequencies in the presence of Faraday rotation can provide a way to reconstruct the 3D magnetic field distribution. In this paper we compare the well known Faraday Tomography (FT, Burn 1966) technique to the new approach named Synchrotron Polarization Gradients (SPG, Lazarian & Yuen 2018b). We compare the strengths and limitations of the two techniques, and describe their synergy. In particular, we show that in the situations when FT technique fails, e.g. due to insufficient frequency coverage, the SPG can still trace the 3D structure of magnetic field.
10 pages, 5 figures, submitted to ApJ
References in corpus (34)
- Theory of Star Formation
- Control of star formation by supersonic turbulence
- An All-Sky Analysis of Polarization in the Microwave Background
- Reconnection in a Weakly Stochastic Field
- Faraday Rotation Measure Synthesis
- The Anisotropy of MHD Alfvénic Turbulence
- Simulations of Incompressible MHD Turbulence
- Dielectric Haloscopes: A New Way to Detect Axion Dark Matter
- Tracing Magnetic Fields with Aligned Grains
- Extending Big Power Law in the Sky with Turbulence Spectra from WHAM data
- Cosmic Ray Propagation: Nonlinear Diffusion Parallel and Perpendicular to Mean Magnetic Field
- Magnetically Aligned Velocity Anisotropy in the Taurus Molecular Cloud
- Velocity centroids as tracers of the turbulent velocity statistics
- Velocity Gradients as a Tracer for Magnetic Fields
- Tracing magnetic fields with spectroscopic channel maps
- Statistical Description of Synchrotron Intensity Fluctuations: Studies of Astrophysical Magnetic Turbulence
- Tracing interstellar magnetic field using velocity gradient technique: Application to Atomic Hydrogen data
- New Regime of MHD Turbulence: Cascade Below Viscous Cutoff
- Faraday tomography of the local interstellar medium with LOFAR: Galactic foregrounds towards IC342
- Linear polarization structures in LOFAR observations of the interstellar medium in the 3C196 field
- Spectrum and Anisotropy of Turbulence from Multi-Frequency Measurement of Synchrotron Polarization
- The structure and statistics of interstellar turbulence
- Observational Diagnostics of Self-Gravitating MHD Turbulence in Giant Molecular Clouds
- Properties of cold and warm HI gas phases derived from a Gaussian decomposition of HI4PI data
- Turbulence Spectra from Spectral Lines: Tests of the Velocity Channel Analysis and Velocity Coordinate Spectrum Techniques
- The application of compressive sampling to radio astronomy II: Faraday rotation measure synthesis
- Gradients of Synchrotron Polarization: Tracing 3D distribution of magnetic fields
- Perspectives on Interstellar Dust Inside and Outside of the Heliosphere
- The Galactic Magneto-Ionic Medium Survey: Moments of the Faraday Spectra
- Study of velocity centroids based on the theory of fluctuations in position-position-velocity space
- Magnetically aligned straight depolarisation canals and the rolling Hough transform
- Statistical tracing of magnetic fields: comparing and improving the techniques
- Source Finding in Linear Polarization for LOFAR, and SKA Predecessor Surveys, using Faraday Moments
- A new perspective on turbulent Galactic magnetic fields through comparison of linear polarisation decomposition techniques
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- Practical Modeling of Large-Scale Galactic Magnetic Fields: Status and Prospects
- Probing Magnetic Field Morphology in Galaxy Clusters with the Gradient Technique
- Studying the local magnetic field and anisotropy of magnetic turbulence by synchrotron polarization derivative
- Diagnosing Turbulence in the Neutral and Molecular Interstellar Medium of Galaxies