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Astronomers used the data Chandra X-ray Observatory belonging POT to identify key structures and search for “lost” matter in the universe.
This missing material is not dark matter, which is invisible, unknown in nature and thought to make up most of the matter in the universe, but “normal” matter found in familiar objects such as stars, planets, and ourselves.
About a third of this matter, created in the first billion years after the Big Bang, has yet to be detected by observations in the local universe, that is, in regions less than a few billion light-years from Earth.
Search for lost matter
Scientists have suggested that at least some of this unrecorded mass may be hidden in filaments of warm or hot gas (temperatures between 10,000 and 10 million Kelvin) in the space between galaxies and clusters of galaxies. They called it “warm-hot intergalactic medium” or COMING (warm-hot intergalactic medium).
A group of astronomers studied the data Chandra from Abell 98 (pictured), which is about 1.4 billion light-years from Earth, and concluded that they likely found evidence that this WHIM is located in the space between two clusters of galaxies. Data from Chandra reveal an X-ray bridge between two colliding clusters containing a gas with a temperature of about 20 million Kelvin and a relatively colder gas with a temperature of about 10 million Kelvin. The hotter gas in the bridge is probably due to the presence of gas in two groups that overlap each other. The temperature and density of the colder gas are consistent with the hotter and denser gas predictions from WHIM.
In addition, data from Chandra they show the presence of a shock wave similar to the sonic boom of a supersonic aircraft. The location of the shock wave is determined by the sudden decrease in X-ray brightness and gas temperature, measured from the north side to the south side of the shock wave. This shock wave is set in motion and positioned in front of one of the clusters of galaxies when it begins to collide with another cluster, the telescope reports on its website. Chandra.
This would be the first time that astronomers have detected such a shock wave in the early stages of a galaxy cluster collision, before the centers of the clusters have passed each other. This shock wave can be directly related to the opening COMING in Abell 98 because it heated the gas between the clusters as they collided. This could lead to an increase in the temperature of the gas in the filament. COMINGwhich is estimated to contain about 400 billion solar masses, which is high enough to be detectable with the Chandra data.
A paper describing this result by a group led by Arnab Sarkar, PhD at the Cambridge Institute of Astronomy, was published in The Astrophysical Journal Letters. (Europe Press)
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Source: RPP
I’m Liza Grey, an experienced news writer and author at the Buna Times. I specialize in writing about economic issues, with a focus on uncovering stories that have a positive impact on society. With over seven years of experience in the news industry, I am highly knowledgeable about current events and the ways in which they affect our daily lives.