Neutral hydrogen structures trace dust polarization angle: Implications for cosmic microwave background foregrounds

Abstract

Using high-resolution data from the Galactic Arecibo L-Band Feed Array HI (GALFA-HI) survey, we show that linear structure in Galactic neutral hydrogen (HI) correlates with the magnetic field orientation implied by Planck 353 GHz polarized dust emission. The structure of the neutral interstellar medium is more tightly coupled to the magnetic field than previously known. At high Galactic latitudes, where the Planck data are noise-dominated, the HI data provide an independent constraint on the Galactic magnetic field orientation, and hence the local dust polarization angle. We detect strong cross-correlations between template maps constructed from estimates of dust intensity combined with either HI-derived angles, starlight polarization angles, or Planck 353 GHz angles. The HI data thus provide a new tool in the search for inflationary gravitational wave B-mode polarization in the cosmic microwave background, which is currently limited by dust foreground contamination.

Accepted to PRL. 7 pages, 5 figures, incl Supplemental Material

References in corpus (9)

• A Joint Analysis of BICEP2/Keck Array and Planck Data
• Planck intermediate results. XIX. An overview of the polarized thermal emission from Galactic dust
• Tracing Magnetic Fields with Aligned Grains
• SPT-3G: A Next-Generation Cosmic Microwave Background Polarization Experiment on the South Pole Telescope
• Toward an Understanding of Foreground Emission in the BICEP2 Region
• ACTPol: A polarization-sensitive receiver for the Atacama Cosmology Telescope
• CLASS: The Cosmology Large Angular Scale Surveyor
• BICEP2 / Keck Array V: Measurements of B-mode Polarization at Degree Angular Scales and 150 GHz by the Keck Array
• A Strategy to Minimize Dust Foregrounds in B-mode Searches

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• Statistical tracing of magnetic fields: comparing and improving the techniques
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• Line-of-Sight Extrapolation Noise in Dust Polarization
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• Maps of the number of HI clouds along the line of sight at high galactic latitude
• Planck intermediate results. XLIV. The structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap
• An Imprint of the Galactic Magnetic Field in the Diffuse Unpolarized Dust Emission
• Predictions of Cosmic Microwave Background Foregrounds Dust Polarization Using Velocity Gradients
• Mapping of the structure of the galactic magnetic field with velocity gradients: Test using star light polarization
• Frequency dependence of the thermal dust $E/B$ ratio and $EB$ correlation: insights from the spin-moment expansion
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• BICEP / Keck XVI: Characterizing Dust Polarization through Correlations with Neutral Hydrogen
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• Twelve Decades: Probing the Interstellar Medium from kiloparsec to sub-AU scales
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• The role of shocks and the velocity gradient in the relative orientation of the magnetic field and dense gas clouds
• Impact of Galactic non-Gaussian foregrounds on CMB lensing measurements
• JWST imaging of the Pleiades: anisotropy of turbulence in the cold neutral medium
• The MACH HI absorption survey I: Physical conditions of cold atomic gas outside of the Galactic plane
• The contribution of neutral gas to Faraday tomographic data at low frequencies. A first extensive comparison between real and synthetic data