Synthetic Polarization Maps of an Outflow Zone from Magnetohydrodynamic Simulations
arXiv:2207.01743 · doi:10.3847/1538-4357/ac7c0f
Abstract
The canonical theory of star formation in a magnetized environment predicts the formation of hourglass-shaped magnetic fields during the prestellar collapse phase. In protostellar cores, recent observations reveal complex and strongly distorted magnetic fields in the inner regions that are sculpted by rotation and outflows. We conduct resistive, nonideal magnetohydrodynamic (MHD) simulations of a protostellar core and employ the radiative transfer code POLARIS to produce synthetic polarization segment maps. Comparison of our mock-polarization maps based on the toroidal-dominated magnetic field in the outflow zone with the observed polarization vectors of SiO lines in Orion Source I shows a reasonable agreement when the magnetic axis is tilted at an angle with respect to the plane-of-sky and if the SiO lines have a net polarization parallel to the local magnetic field. Although the observed polarization is from SiO lines and our synthetic maps are due to polarized dust emission, a comparison is useful and allows us to resolve the ambiguity of whether the line polarization is parallel or perpendicular to the local magnetic field direction.
References in corpus (54)
- An atomic and molecular database for analysis of submillimetre line observations
- High-Mass Star and Massive Cluster Formation in the Milky Way
- Planck intermediate results. XXXV. Probing the role of the magnetic field in the formation of structure in molecular clouds
- Magnetic Fields in the Formation of Sun-Like Stars
- Circumventing the radiation pressure barrier in the formation of massive stars via disk accretion
- A Compendium of Distances to Molecular Clouds in the Star Formation Handbook
- Mechanism of Magnetic Flux Loss in Molecular Clouds
- Collapse of Rotating Magnetized Molecular Cloud Cores and Mass Outflows
- Radiative transfer with POLARIS: I. Analysis of magnetic fields through synthetic dust continuum polarization measurements
- Resolved images of a protostellar outflow launched by an extended disk wind
- Magnetic Fields and Rotations of Protostars
- Collapse and Fragmentation of Rotating Magnetized Clouds. II. Binary Formation and Fragmentation of First Cores
- Disk-Driven Rotating Bipolar Outflow in Orion Source I
- Evolution of Protostellar Outflow around Low-mass Protostar
- Collapse and Fragmentation of Rotating Magnetized Clouds. I. Magnetic Flux - Spin Relation
- Magnetically regulated collapse in the B335 protostar ? I. ALMA observations of the polarized dust emission
- ALMA discovery of a rotating SO/SO flow in HH212. A possible MHD disk wind?
- Grand Design Spiral Arms in A Young Forming Circumstellar Disk
- HAWC+/SOFIA Multiwavelength Polarimetric Observations of OMC-1
- The early evolution of viscous and self-gravitating circumstellar disks with a dust component
- A Multi-Epoch Study of the Radio Continuum Emission of Orion Source I: Constraints on the Disk Evolution of a Massive YSO and the Dynamical History of Orion BN/KL
- Tracing the Bipolar Outflow from Orion Source I
- A Keplerian disk around Orion Source I, a ~15 Msun YSO
- Protostellar Outflows and Radiative Feedback from Massive Stars. II. Feedback, Star Formation Efficiency, and Outflow Broadening
- Imaging the Ionized Disk of the High-Mass Protostar Orion-I
- Dust Polarization Toward Embedded Protostars in Ophiuchus with ALMA. I. VLA 1623
- Magnetic field in a young circumbinary disk
- Protostellar Outflows and Radiative Feedback from Massive Stars
- Molecular outflow launched beyond the disk edge
- Impact of Protostellar Outflow on Star Formation: Effects of Initial Cloud Mass
- Highly Ordered and Pinched Magnetic Fields in the Class 0 Proto-Binary System L1448 IRS 2
- Massive Outflows Driven by Magnetic Effects in Star Forming Clouds with High Mass Accretion Rates
- Rotation in the NGC 1333 IRAS 4C Outflow
- Helical Magnetic Fields in the NGC1333 IRAS 4A Protostellar Outflows
- Modeling the magnetic field in the protostellar source NGC 1333 IRAS 4A
- Comparing star formation models with interferometric observations of the protostar NGC 1333 IRAS 4A. I. Magnetohydrodynamic collapse models
- Protostellar collapse: the conditions to form dust rich protoplanetary disks
- A Fast Algorithm for Solving the Poisson Equation on a Nested Grid
- Gravitoviscous protoplanetary disks with a dust component. I. The importance of the inner sub-au region
- Understanding the origin of the magnetic field morphology in the wide-binary protostellar system BHR 71
- ALMA Observations of Orion Source I at 350 and 660 GHz
- The origin of dust polarization in molecular outflows
- Gravitoviscous protoplanetary disks with a dust component. II. Spatial distribution and growth of dust in a clumpy disk
- Origin of Molecular Outflow Determined from Thermal Dust Polarization
- Failed and delayed protostellar outflows with high mass accretion rates
- OMC-1 dust polarisation in ALMA Band 7: Diagnosing grain alignment mechanisms in the vicinity of Orion Source I
- Conditions for justifying single-fluid approximation for charged and neutral dust fluids and a smoothed particle magnetohydrodynamics method for dust-gas mixture
- Distortion of Magnetic Fields in a Starless Core II: 3D Magnetic Field Structure of FeSt 1-457
- The magnetic properties of the protostellar core IRAS 15398-3359
- Measurement of the magnetic field direction in the NGC2024-FIR5 protostellar outflow
- Magnetic Field Structure of Orion Source I
- Magnetic Field Structure in Spheroidal Star-Forming Clouds. II. Estimating Field Structure from Observed Maps
- ALMA band 8 continuum emission from Orion Source I
- Fitting an Analytic Magnetic Field to a Prestellar Core