31/07/2021

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Radio telescope images enable a new way to study magnetic fields in galaxy clusters millions of light years away — ScienceDaily

For the initial time, researchers have observed plasma jets interacting with magnetic fields in a...

For the initial time, researchers have observed plasma jets interacting with magnetic fields in a massive galaxy cluster 600 million light-weight many years away, thanks to the assistance of radio telescopes and supercomputer simulations. The results, revealed in the journal Character, can assistance clarify how such galaxy clusters evolve.

Galaxy clusters can comprise up to hundreds of galaxies certain alongside one another by gravity. Abell 3376 is a enormous cluster forming as a result of a violent collision in between two sub-clusters of galaxies. Really little is recognised about the magnetic fields that exist inside this and equivalent galaxy clusters.

“It is normally hard to specifically study the composition of intracluster magnetic fields,” says Nagoya University astrophysicist Tsutomu Takeuchi, who was involved in the study. “Our outcomes evidently demonstrate how prolonged-wavelength radio observations can assistance discover this conversation.”

An worldwide crew of scientists have been making use of the MeerKAT radio telescope in the Northern Cape of South Africa to discover more about Abell 3376’s enormous magnetic fields. A person of the telescope’s very significant-resolution images revealed a thing surprising: plasma jets emitted by a supermassive black gap in the cluster bend to sort a unique T-condition as they increase outwards for distances as considerably as 326,156 light-weight many years away. The black gap is in galaxy MRC 0600-399, which is in close proximity to the centre of Abell 3376.

The crew put together their MeerKAT radio telescope information with X-ray information from the European Place Agency’s space telescope XXM-Newton to obtain that the plasma jet bend takes place at the boundary of the subcluster in which MRC 0600-399 exists.

“This advised us that the plasma jets from MRC 0600-399 have been interacting with a thing in the heated gas, referred to as the intracluster medium, that exists in between the galaxies inside Abell 3376,” explains Takeuchi.

To figure out what was taking place, the crew performed 3D ‘magnetohydrodynamic’ simulations making use of the world’s most potent supercomputer in the industry of astronomical calculations, ATERUI II, positioned at the National Astronomical Observatory of Japan.

The simulations confirmed that the jet streams emitted by MRC 0600-399’s black gap eventually access and interact with magnetic fields at the border of the galaxy subcluster. The jet stream compresses the magnetic industry lines and moves along them, forming the characteristic T-condition.

“This is the initial discovery of an conversation in between cluster galaxy plasma jets and intracluster magnetic fields,” says Takeuchi.

An worldwide crew has just begun design of what is planned to be the world’s biggest radio telescope, referred to as the Sq. Kilometre Array (SKA).

“New facilities like the SKA are envisioned to reveal the roles and origins of cosmic magnetism and even to assistance us fully grasp how the universe advanced,” says Takeuchi. “Our review is a great example of the electrical power of radio observation, one particular of the very last frontiers in astronomy.”

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