$Ab$ $initio$ modeling of Galactic dust polarized CMB foreground

Alexei G. Kritsuk; Ka Wai Ho; Ka Ho Yuen; Raphael Flauger

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arXiv · 2605.06896

$Ab$ $initio$ modeling of Galactic dust polarized CMB foreground

Alexei G. Kritsuk·Ka Wai Ho·Ka Ho Yuen·Raphael Flauger

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Abstract

We present the analysis of high-resolution synthetic dust polarization maps derived from large-scale simulations of magnetized multiphase interstellar turbulence carried out with the AthenaK code on the $Frontier$ exascale supercomputer at the Oak Ridge National Laboratory. Our turbulence model accurately captures spectral properties of the $E$- and $B$-modes measured by $Planck$ at 353 GHz. The simulations provide new insights into the physical origins of the observed $E/B$ asymmetry and positive $TE$ signal, facilitating the development of advanced models of Galactic foreground emission for current and future CMB experiments.

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Alexei G. Kritsuk, Ka Wai Ho, Ka Ho Yuen, Raphael Flauger. 2026-05-07. $Ab$ $initio$ modeling of Galactic dust polarized CMB foreground. https://arxiv.org/abs/2605.06896

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