Magnetic field structure of the LMC: Insights from Atomic gas data and foreground emission separation

Dana Alina, J.-P. Bernard, Ka Ho Yuen, A. Lazarian, Annie Hughes

2024

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DOI 10.1017/s1743921325000432
Data confidence 85 high
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Abstract

Abstract We employed HI data together with Planck polarization data to estimate the foreground magnetic field and intensity toward the Large Magellanic (Milky) Cloud. For the magnetic field structure, we applied the Velocity Gradients Technique on HI spectra while for the intensity contribution separation we correlated the atomic gas column density with the Planck intensity at 353 GHz, around the galaxy. Our study highlights the importance of neutral hydrogen measurements in and around galaxies and suggests a method for foreground subtraction.