Tracing magnetic field morphology using the Velocity Gradient Technique in the presence of CO self-absorption
arXiv:1809.09806 · doi:10.3847/1538-4357/ab0376
Abstract
Probing magnetic fields in self-gravitating molecular clouds are generally difficult even with the use of the polarimetry. Based on the properties of magneto-hydrodynamic (MHD) turbulence and turbulent reconnection, Velocity Gradient Technique (VGT) provides a new way in tracing magnetic field orientation and strength based on the spectroscopic data. Our study tests the applicability of VGT in various molecular tracers, e.g. 12CO, 13CO, and C18O. By inspecting synthetic molecular line maps of CO isotopologue generated through radiative transfer calculations, we show that the VGT method can be successfully applied in probing the magnetic field direction in the diffuse interstellar medium as well as in self-gravitating molecular clouds.
arXiv comment17 pages, 10 figures, ApJ accepted 2019.1.29
References in corpus (34)
- Control of star formation by supersonic turbulence
- Reconnection in a Weakly Stochastic Field
- The Anisotropy of MHD Alfvénic Turbulence
- Simulations of Incompressible MHD Turbulence
- Compressible Magnetohydrodynamic Turbulence: mode coupling, scaling relations, anisotropy, new regime and astrophysical implications
- Star Formation in a Crossing Time
- 9286 Stars: An Agglomeration of Stellar Polarization Catalogs
- Tracing Magnetic Fields with Aligned Grains
- Simulations of MHD Turbulence in a Strongly Magnetized Medium
- Velocity Modification of HI Power Spectrum
- Thermal condensation in a turbulent atomic hydrogen flow
- Simulating Radiating and Magnetized Flows in Multi-Dimensions with ZEUS-MP
- An Imprint of Molecular Cloud Magnetization in the Morphology of the Dust Polarized Emission
- Magnetic Fields in Dark Cloud Cores: Arecibo OH Zeeman Observations
- Studies of regular and random magnetic fields in the ISM: statistics of polarization vectors and the Chandrasekhar-Fermi technique
- Fast Magnetic Reconnection and Spontaneous Stochasticity
- Numerical methods for non-LTE line radiative transfer: Performance and convergence characteristics
- Velocity Gradients as a Tracer for Magnetic Fields
- Turbulence, Magnetic Reconnection in Turbulent Fluids and Energetic Particle Acceleration
- Tracing magnetic fields with spectroscopic channel maps
- What are we learning from the relative orientation between density structures and the magnetic field in molecular clouds?
- Balloon-Borne Submillimeter Polarimetry of the Vela C Molecular Cloud: Systematic Dependence of Polarization Fraction on Column Density and Local Polarization-Angle Dispersion
- Driven and Decaying Turbulence Simulations of Low-Mass Star Formation: From Clumps to Cores to Protostars
- Tracing interstellar magnetic field using velocity gradient technique: Application to Atomic Hydrogen data
- The Density and Temperature of Molecular Clouds in M33
- Distribution of velocity gradient orientations: Mapping magnetization with the Velocity Gradient Technique
- Gradients of Synchrotron Polarization: Tracing 3D distribution of magnetic fields
- Improving the Accuracy of Magnetic Field Tracing by Velocity Gradients: Principal Component Analysis
- A Case Study of Low-Mass Star Formation
- The balloon-borne large-aperture submillimeter telescope for polarimetry: BLAST-Pol
- Mapping of the structure of the galactic magnetic field with velocity gradients: Test using star light polarization
- Tracing interstellar magnetic field using the velocity gradient technique in shock and self-gravitating media
- Velocity centroid gradients for absorbing media
- Synchrotron intensity gradients as tracers of magnetic field
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- Mapping of the structure of the galactic magnetic field with velocity gradients: Test using star light polarization
- Predictions of Cosmic Microwave Background Foregrounds Dust Polarization Using Velocity Gradients
- Measuring magnetization with rotation measures and velocity centroids in supersonic MHD turbulence
- Probing Magnetic Field Morphology in Galaxy Clusters with the Gradient Technique
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- Study Turbulence and Probe Magnetic Field Using Gradients Technique: Application to HI-to-H2 Transition Regions
- Tracing Magnetic Field with Synchrotron Polarization Gradients: Parameter Study
- Large-scale magnetic field in the Monoceros OB-1 East molecular cloud
- Multi-Phase Magnetic Fields in the Galaxy NGC 3627
- A Synergy of the Velocity Gradients Technique and the Probability Density Functions for Identifying Gravitational Collapse in Self-Absorbing Media
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