Researchers have been looking deeper into galactic collisions while also observing a shock wave over 1.6 million light-years long.
that these galactic collisions unleash vast amounts of energy. Additionally, it could help us better understand some of the physics that make up our solar system.Researchers are publishing a new study on these colossal galactic collisions inarXiv
While the idea of a collisionless shock wave might sound impossible, especially as we talk about colliding galaxy clusters, it is important to note that just because two clusters are crashing into each other doesn’t mean a physical collision is happening.In fact, the majority of a galactic cluster is an immense halo ofand a cloud of gas known as the intra-cluster medium. It’s these two components that often cause the collisionless shock waves that scientists have been studying.
Researchers say the galactic collision’s bow shock is compressed gas ahead of the infalling cluster. However, the upstream shock is much more complex. Instead, it forms when the gas that is removed from the infalling cluster is left behind and interacts directly with the in-situ gas within the cluster it’s moving through.
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