The Random Magnetic Field of the Milky Way
The analysis used Planck 408 MHz synchrotron data to constrain the large-scale random magnetic field of the Milky Way. It found that this dominant component is a vertically compact disk with an rms strength of about 4 µG and a scale height of roughly 1 kpc, which is thinner than previously thought. Separating foreground emission was crucial for accurate results.