Ultraviolet Spectropolarimetry with Polstar: Interstellar Medium Science
arXiv:2111.08079 · doi:10.1007/s10509-022-04153-3
Abstract
Continuum polarization over the UV-to-microwave range is due to dichroic extinction (or emission) by asymmetric, aligned dust grains. Because of both grain alignment and scattering physics, the wavelength dependence of the polarization, generally, traces the size of the aligned grains. Ultraviolet (UV) polarimetry therefore provides a unique probe of the smallest dust grains (diameterm), their mineralogy and interaction with the environment. However, the current observational status of interstellar UV polarization is very poor with less than 30 lines of sight probed. With the modern, quantitative and well-tested, theory of interstellar grain alignment now available, we have the opportunity to advance the understanding of the interstellar medium by executing a systematic study of the UV polarization in the ISM of the Milky Way and near-by galaxies. The Polstar mission will provide the sensitivity and observing time needed to carry out such a program, addressing questions of dust composition as a function of size and location, radiation- and magnetic-field characteristics as well as unveiling the carrier of the 2175Å extinction feature. In addition, using high-resolution UV line spectroscopy Polstar will search for and probe the alignment of, and polarization from, aligned atoms and ions - so called "Ground State Alignment", a potentially powerful new probe of magnetic fields in the diffuse ISM.
arXiv comment18 pages, 7 figures
References in corpus (74)
- Gaia Data Release 2. Summary of the contents and survey properties
- Interstellar Dust Grains
- A Hipparcos census of the nearby OB associations
- A 3D Dust Map Based on Gaia, Pan-STARRS 1 and 2MASS
- A Quantitative Comparison of SMC, LMC, and Milky Way UV to NIR Extinction Curves
- Electric Dipole Radiation from Spinning Dust Grains
- Radiative torques: Analytical Model and Basic Properties
- The Effects of Stellar Rotation. II. A Comprehensive Set of Starburst99 Models
- Gaia-2MASS 3D maps of Galactic interstellar dust within 3 kpc
- Radiative Torques on Interstellar Grains: I. Superthermal Spinup
- Diffuse Galactic Emission from Spinning Dust Grains
- Radiative Torques on Interstellar Grains: II. Grain Alignment
- Dispersion of Magnetic Fields in Molecular Clouds. II
- Planck 2018 results. XII. Galactic astrophysics using polarized dust emission
- Polarized Far-Infrared and Submillimeter Emission from Interstellar Dust
- Highly Ionized Gas Surrounding High Velocity Cloud Complex C
- Radiative grain alignment in protoplanetary disks: Implications for polarimetric observations
- Dust Grain-Size Distributions From MRN to MEM
- Observational Constraints on the Physical Properties of Interstellar Dust in the Post-Planck Era
- Rotational Disruption of Dust Grains by Radiative Torques in Strong Radiation Fields
- Grain alignment induced by radiative torques: effects of internal relaxation of energy and complex radiation fields
- Dust models compatible with Planck intensity and polarization data in translucent lines of sight
- Nuclear Spin Relaxation within Interstellar Grains
- The Dielectric Function of "Astrodust" and Predictions for Polarization in the 3.4m and 10m Features
- High-accuracy estimation of magnetic field strength in the interstellar medium from dust polarization
- Resonance Paramagnetic Relaxation and Alignment of Small Grains
- The Role of Polycyclic Aromatic Hydrocarbons in Ultraviolet Extinction. I. Probing small molecular PAHs
- Modeling the Anomalous Microwave Emission with Spinning Nanoparticles: No PAHs Required
- Properties of extragalactic dust inferred from linear polarimetry of Type Ia Supernovae
- Observational Constraints on Interstellar Grain Alignment
- Grain alignment and disruption by radiative torques in dense molecular clouds and implication for polarization holes
- RoboPol: A four-channel optical imaging polarimeter
- A technique for constraining the driving scale of turbulence and a modified Chandrasekhar-Fermi method
- Constraint on the Polarization of Electric Dipole Emission from Spinning Dust
- Mapping the Extinction Curve in 3D: Structure on Kiloparsec Scales
- Polarization of absorption lines as a diagnostics of circumstellar, interstellar and intergalactic magnetic fields: Fine structure atoms
- Three-Dimensional Simulations of Magnetized Superbubbles: New Insights into the Importance of MHD Effects on Observed Quantities
- Carbon p Electron Ferromagnetism in Silicon Carbide
- Magnetic Properties of Dust Grains, Effect of Precession and Radiative Torque Alignment
- Evidence for Extremely High Dust Polarization Efficiency in NGC 3184
- Paramagnetic alignment of small grains: a novel method for measuring interstellar magnetic fields
- Atomic alignment and Diagnostics of Magnetic Fields in Diffuse Media
- Extreme Starlight Polarization in a Region with Highly Polarized Dust Emission
- Dust in the Small Magellanic Cloud: Interstellar Polarization and Extinction
- First Observation of the Submillimeter Polarization Spectrum in a Translucent Molecular Cloud
- Alignment and rotational disruption of dust
- Radiative torques of irregular grains: Describing the alignment of a grain ensemble
- Interstellar polarization and grain alignment: the role of iron and silicon
- Polarization from aligned atoms as a diagnostics of circumstellar, AGN and interstellar magnetic fields: II. Atoms with Hyperfine Structure
- FUSE Observations of Possible Infalling Planetesimals in the 51 Ophiuchi Circumstellar Disk
- Observational Evidence Linking Interstellar UV Absorption to PAH Molecules
- Tracing Magnetic Fields with Ground State Alignment
- OMC-1 dust polarisation in ALMA Band 7: Diagnosing grain alignment mechanisms in the vicinity of Orion Source I
- Probing Interstellar Grain Growth Through Polarimetry in the Taurus Cloud Complex
- Ultraviolet Spectropolarimetry: on the origin of rapidly rotating B stars
- Correlation between Interstellar Polarization and Dust Temperature: Alignment of Grains by Radiative Torques is Ubiquitous?
- Toward understanding physical origin of 2175Å extinction bump in interstellar medium
- The Polstar High Resolution Spectropolarimetry MIDEX Mission
- Two modes of carbonaceous dust alignment
- Detection of Polarized Infrared Emission by Polycyclic Aromatic Hydrocarbons in the MWC 1080 Nebula
- Interstellar Polarization in M31
- Discovery of polarizations from ground state absorption lines: tracer of sub-Gauss magnetic field on 89Her
- A multi-wavelength search for intrinsic linear polarization in Wolf-Rayet winds
- Ultraviolet Spectropolarimetry:Conservative and Nonconservative Mass Transfer in OB Interacting Binaries
- Cross section alignment of polycyclic aromatic hydrocarbons by anisotropic radiation
- UV Spectropolarimetry with Polstar: Massive Star Binary Colliding Winds
- Study of Interplanetary Magnetic Field with Ground State Alignment
- Ultraviolet Spectropolarimetry With Polstar: Using Polstar to test Magnetospheric Mass-loss Quenching
- Ultraviolet and visible spectropolarimetric variability in P Cygni
- UV Spectropolarimetry with Polstar: Protoplanetary Disks
- The Complex Circumstellar and Circumbinary Environment of V356 Sgr
- SOUTH POL: Revealing the Polarized Southern Sky
- On the magnetic field through the Upper Centaurs-Lupus Super bubble, in the vicinity of the Southern Coalsack
- The influence of atomic alignment on absorption and emission spectroscopy
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- Ultraviolet Spectropolarimetry: on the origin of rapidly rotating B stars
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- UV Spectropolarimetry with Polstar: Massive Star Binary Colliding Winds
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- UV Spectropolarimetry with Polstar: Protoplanetary Disks
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