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Dust-polarization maps for local interstellar turbulence
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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.
Forward citations
Cited by 2 Pith papers
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Single Frequency CMB Foreground Removal with Inter-scale Machine Learning
A hybrid CNN using both inter-scale and multi-frequency dust correlations achieves residual B-mode foreground power 3.62e-4 in DustFilaments simulations, about 7x lower than spatial ILC.
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Impact of Galactic non-Gaussian foregrounds on CMB lensing measurements
Galactic dust bias on CMB lensing amplitude is below 0.3σ for ACT but can exceed 0.3σ for Simons Observatory with wide masks, depending on the dust model.
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