Galactic dynamics
The Galactic Magnetic Field
A large-scale magnetic field of a few microgauss threads the Milky Way, ordered along the spiral arms and tangled on smaller scales. Weak though it is, it guides cosmic rays, shapes the interstellar medium, and helps regulate star formation; it is traced through synchrotron radiation, Faraday rotation, and polarised starlight and dust.
Galaxy, objects & concepts
Knowledge connections
- Associated withThe Diffuse Interstellar Medium
- Associated withThe Spiral Arms
Sources
The primary and reference sources this topic draws on.
- ESOEuropean Southern Observatory
Southern-hemisphere observatory data and imagery (VLT, ALMA partner).