Dust-polarization maps for local interstellar turbulence

Abstract

We show that simulations of magnetohydrodynamic turbulence in the multiphase interstellar medium yield an $E/B$ ratio for polarized emission from Galactic dust in broad agreement with recent $Planck$ measurements. In addition, the $B$-mode spectra display a scale dependence that is consistent with observations over the range of scales resolved in the simulations. The simulations present an opportunity to understand the physical origin of the $E/B$ ratio, and a starting point for more refined models of Galactic emission of use for both current and future CMB experiments.

5 pages, 2 figures, to appear in Phys. Rev. Letters

References in corpus (10)

• The Statistics of Supersonic Isothermal Turbulence
• Radiative torque alignment: Essential Physical Processes
• Comparing Numerical Methods for Isothermal Magnetized Supersonic Turbulence
• Velocity Gradients as a Tracer for Magnetic Fields
• The structure and statistics of interstellar turbulence
• Is the dust-to-gas ratio constant in molecular clouds?
• Interstellar filaments and star formation
• Modeling Dust Polarization Observations of Molecular Clouds through MHD Simulations
• Can the observed E/B ratio for dust galactic foreground be explained by sub-Alfvenic turbulence?
• Effects of Grain Alignment Efficiency on Synthetic Dust Polarization Observations of Molecular Clouds

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• IMAGINE: A comprehensive view of the interstellar medium, Galactic magnetic fields and cosmic rays
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• The Origin of Parity Violation in Polarized Dust Emission and Implications for Cosmic Birefringence
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• The Power Spectra of Polarized, Dusty Filaments
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• Fingerprint of Galactic Loop I on polarized microwave foregrounds
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