Scientists are stumped by backward shock waves from deep space – BollyInside

Science

Scientists at the University of Western Australia and the University of Bologna in Italy studied the very distant galaxy cluster Abell 3266 and identified three otherwise unknown phenomena, at least so far. And since all three emit radio waves, they could be observed at distances that defy almost all units of measurement.

Abell 3266 is a galaxy cluster in the region known as the Horologium Reticulated Supercluster, which is 809 million light-years away from Earth. (Further zooming into space reveals that the Milky Way galaxy is also part of a supercluster. Some supercluster-like structures believed to exist are so large that existing cosmological theories may conflict with !)

In an article on The Conversation, his website that publishes content by scientists, the scientist explains that the term “cluster of galaxies” is a bit misleading. Yes, the clusters could contain “hundreds or thousands” of galaxies, they say, but the vast majority of the mass in these clusters is dark matter, with the remainder “of hot plasma.” It’s soup. For example, the Milky Way is made up of an estimated 85% dark matter. The galaxy itself is only a few percent.

On Earth, plasma is primarily considered the composition of stars, including the Sun. But plasma physics is a vast field, since plasma itself is just another state of matter. The more you study in different contexts, the more you understand. Knowledge can ultimately help people on Earth working on projects such as nuclear fusion power generation. Abel 3266 is a “particularly dynamic” star cluster, named after the prolific astronomer and public scientist George O. Abel. During his lifetime, Abel searched for galaxy clusters in both the northern and southern skies. (Abell 3266 is in the southern sky.) While observing the cluster with the Australian Square Kilometer Array Pathfinder and the Australian Telescope Compact Array Radio Telescope, the researcher observed three different unusual phenomena. : Radio Relic, Radio Halo, and Fossil Radio Source.

Researchers say other scientists have begun observing other lagging radio relics in similar studies, indicating that this is an anomalous but non-existent phenomenon. It is theorized that the radio wave relics in the plasma are not due solely to the energy that impinged on the plasma, but due to multiple subclusters colliding at once. Imagine biting into crispy potato chips, or crispy potato chips that were folded during manufacturing.

All three of these phenomena are produced by the energy impinging on the abundant plasma. In radio relics, this reaction emits shockwaves similar to the sonic booms we experience on Earth. They are not uncommon in galaxy clusters themselves, but what these researchers found is backwards. moving north-south. Researchers called it a “fake” radio artifact.

The researchers report all three radio abnormalities in their work, which was published on August 1 in Monthly Notices of the Royal Astronomical Society, with the caveat that they all need a lot more research; this paper is more of an announcement than a conclusion. “Further research is needed to completely unpack the history of Abell 3266 and its constituent radio galaxies, and answers to a number of problems remain elusive,” they write.

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  • Scientists are stumped by backward shock waves from deep space
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