Astronomers now have a new way of finding missing objects, using distant galleries as “scintillating pins” to identify these mysterious objects.
One of the ongoing questions in astronomy is how everything in the universe should be described as expected in theory. Realistic efforts for measurement always end in unexplained loss, leading to the suggestion of a dark matter and dark energy. Only five percent of the known universe is made up of so-called ordinary material – the ones found in physically visible parts of the universe from living creatures to stars. This typical case is also called baryonic matter, and only half of it has been detected by direct measurement.
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Tracking case missing
Yuanming Wang, Ph.D. a candidate from the University of Sydney School of Physics, has developed a new strategy to find and identify the required issue. Her new method was used to locate previously undiscovered cold gas streams in the Milky Way about 10 light-years away from the ground. The gas cloud extends about a trillion kilometers long and nearly ten billion kilometers wide. However, it only has weight about the earth’s moon.
Details of their new method appear in the journal Monthly Notices of the Royal Astronomical Society.
“We suspect that much of the ‘missing’ baryonic matter is in the form of cold gas clouds either in galleries or between galleries,” Wang said in a press release from the University. She continues her doctorate at the Sydney Institute and says that the gas cannot be identified using standard detection methods because the cloud does not emit visible light on its own and is too cold to be on. detected by radio astronomy equipment.
To find the giant gas cloud, researchers looked for other radio sources in the background and asked how those sources shone on light. They found five radio sources following a large line in the sky, with further analysis of these light sources showing that light must have “passed through the same cold lump of gas.” In the same way that visible light emits a “twinkle” as it passes through the Earth ‘s atmosphere, radio waves also have an effect as it passes through matter. There is an obvious difference in their brightness, which Sydney University researchers used to detect the gas cloud.
Marking the gas cloud
According to Dr Artem Tuntsov, co-author of the study from the astronomical institute Manly Astrophysics, although they are not sure what the gas cloud is, a nearby star could be a “hydrogen snow cloud”. hand, forming a long, thin layer of gas.
Hydrogen gas begins to freeze at around minus 260 degrees Celsius, prompting theorists that the previously unseen baryonic material could be trapped inside the hydrogen snow clouds that are, as said Wang, hard to find using standard techniques.
“This is a great result for a young astronaut. We hope the Yuanming-trained methods will allow us to find more needed materials.” said professor Tara Murphy, Wang’s director.
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