Magnetic Field In The Magellanic Bridge Observed By Astronomers

For the first time, a team of astronomers led by SIfA PhD student Jane Kaczmarek, has detected a magnetic field associated with the Magellanic Bridge, a gaseous structure in the nearby Magellanic Clouds system.

Visible by the naked eyes in the southern night sky, the Large and the Small Magellanic Clouds are two satellites galaxies orbiting our own Galaxy, the Milky Way. These galaxies are the closest pair of satellite galaxies that are not only interacting with our Galaxy, but with one another. Despite being well studied, these galaxies continue to astonish astronomers, revealing the unknown.

Using the data from the Australia Telescope Compact Array radio telescope at Paul Wild Observatory in NSW, Jane Kaczmarek and her team were able to make first ever indirect detection of the magnetic field by using distant galaxies that lie behind LMC and SMC.

This discovery opens new and fascinating questions: was the magnetic field generated from within the Magellanic Bridge? Or was it ripped from the Magellanic Clouds during their interaction with one another?

Research paper entitled “Detection of a coherent magnetic field in the Magellanic Bridge through Faraday rotation is published in the Monthly Notices of the Royal Astronomical Society, and it is also available on arXiv.