Evidence for Line-of-Sight Frequency Decorrelation of Polarized Dust Emission in $Planck$ Data
V. Pelgrims,
S. E. Clark,
B. S. Hensley
et al.
Abstract:If a single line of sight (LOS) intercepts multiple dust clouds having different spectral energy distributions (SEDs) and magnetic field orientations, then the frequency scaling of each of the Stokes Q and U parameters of the thermal dust emission may be different, a phenomenon we refer to as LOS frequency decorrelation. We present first evidence for LOS frequency decorrelation in Planck data by using independent measurements of neutral hydrogen (Hi) emission to probe the 3D structure of the magnetized ISM. We… Show more
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