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The Magnetic Superhighways That Drive Galaxy Evolution

February 02, 2026
The Magnetic Superhighways That Drive Galaxy Evolution
By Evan Gough (https://ift.tt/T9HkNgp)

Researchers used ALMA to image the magnetic fields of the galactic disk and dusty and molecular outflow of the merging galaxy Arp220. They found that a magnetic superhighway funnels material between galaxy cores, and that powerful winds move material along the fields into the circumgalactic medium. Image Credit: Lopez-Rodriguez, E. (USC; polarization data), Girart, J.M. (ICE-CSIC and IEEC; polarization data); (Barcos-Muñoz, L. (NRAO; 3GHz data)

Arp 220 is a well-known pair of galaxies that are merging. New ALMA observations of polarized light reveal the complex and powerful magnetic fields that shape the process.



February 3, 2026 at 03:20AM
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