Scientists Find Giant Wave Rolling through the Perseus Galaxy Cluster

In this visualization of data from NASA's Chandra X-ray Observatory you can see hot gas in the Perseus galaxy cluster (Abell 426, https://goo.gl/hlN1RQ). It is located in the constellation of Perseus (https://goo.gl/QnZe4V), about 240 million light-years away from Earth and has a diameter of 11 million light-years, this image is showing am area about 1.3 million light-years wide.

In the lower part of the image, slightly to the left from the center you can see an enormous wave of hot gas, over 200,000 light-years wide, twice the size of our Milky Way galaxy. Researchers think the wave formed billions of years ago after a small galaxy cluster grazed Perseus and caused its vast supply of gas to slosh around in an enormous volume of space.

You should read the source for far more information, make sure to take a look at the video as well for an interesting animation of the process.

More information here:
http://chandra.harvard.edu/photo/2017/perseus/

Video: A Wave in the Perseus Cluster 200,000 Light Years Across
https://youtu.be/c_MfbxLhwEU

Paper: Is there a giant Kelvin-Helmholtz instability in the sloshing cold front of the Perseus cluster?
https://arxiv.org/abs/1705.00011

What is a galaxy cluster?

A galaxy cluster is a group of sometimes up to thousands of galaxies bound together by gravity. Several galaxy clusters together can form a supercluster (https://goo.gl/Llq5ko). More information here:
https://en.wikipedia.org/wiki/Galaxy_cluster

Image credit: Visualization of data showing the Perseus Cluster NASA/CXC/GSFC/S.A.Walker, et al. https://goo.gl/meoHD3

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#science #astronomy #chandra #perseuscluster #galaxycluster #abell426 #gas #KelvinHelmholtzwaves #xrays
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