Researchers track a cosmic whale to discover galaxies’ magnetic fields

by admin on Dec 02, 2019
Image Source : sci-news

Astronomers are looking to a cosmic whale to learn more about the magnetic fields which surround galaxies. The picture over of NCG 4631, likewise called the “Whale Galaxy,” was recorded by the Very Large Array in New Mexico, and reveals filaments of the magnetic field in green and blue, snaking out from the body of the galaxy.

Researchers recognize that galaxies are bordered by halos: areas of hot gas and dark matter, which extends past the noticeable part of the galaxy. These halos have magnetic fields running through them, which influence the flow of cosmic rays and also impact star formation. But we don’t recognize much concerning the structure of these areas. That’s why the brand-new findings in the Whale Galaxy are so valuable, as it has among the biggest halos we have discovered in a galaxy observed from edge-on.

” This is the first time that we have clearly spotted what astronomers call large-scale, systematic, magnetic fields far in the halo of a spiral nebula, with the area lines straightened in the same direction over ranges of a thousand light-years,” Dr. Marita Krause, an astronomer with the Max-Planck Institute for Radioastronomy, stated in a statement. “We even see a normal pattern of this organized field changing instructions.”

To identify the magnetic field of the galaxy, the scientists used the antenna selection to find usually discharged radio waves. By utilizing different arrangements of the array, they were able to spot both the broader frameworks of the galaxy in addition to filaments.

These findings might assist in clarifying even more regarding the connection between the development of galaxies and also their electromagnetic fields. As the researchers explained: “Building such an image can address vital concerns such as how galaxies obtain electromagnetic fields, and whether an eager beaver result generates all such fields. Can these galaxy halo fields light up the mysterious beginning of the also larger intergalactic magnetic fields that have been observed?”

The findings are published in two documents in the journals Astronomy & Astrophysics as well as the Monthly Notices of the Royal Astronomical Society.

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