Kritsuk AG, Flauger R, Ustyugov SD. Dust-Polarization Maps for Local Interstellar Turbulence.
PHYSICAL REVIEW LETTERS 2018;
121:021104. [PMID:
30085733 PMCID:
PMC6121782 DOI:
10.1103/physrevlett.121.021104]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 05/01/2018] [Indexed: 06/08/2023]
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 cosmic microwave background experiments.
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