2020-07-05

Latest discovery:48%of hydrogen nuclei in the galaxy are stripped of electrons by energy from unknown sources

By yqqlm yqqlm

If you calculate how much energy penetrates into the center of the galaxy, it may provide new clues to the fundamental source of energy in our galaxy. Hafner, an assistant professor of physics and astronomy at Embry-Res University of Aeronautics, said:The central hydrogen nuclei of the Milky Way are ionized and stripped of electrons, which has very high energy. If there is no sustained energy, free electrons are usually found in a relatively short time Rejoin each other and return to a neutral state. Being able to see ionized gas in new ways should help astronomers discover the various sources that may hold all these ionized energies.

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In order to determine the amount of energy or radiation in the center of the galaxy, scientists must not No peeping through dust cover. The Milky Way is packed with more than 200 billion stars, and dark patches of interstellar dust and gas. Using 20 years of data from the WHAM telescope, a strangely shaped cloud of dust was discovered. Its research findings were published in the journal”Science Progress” and found that the strange thing is ionized hydrogen. When it is captured through the sensitive WHAM telescope, it appears Red, it is moving in the direction of the earth.

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This feature is known by scientists as”inclined disc”Because it looks tilted compared to the rest of the Milky Way. The location of this feature cannot be explained by known physical phenomena (such as galaxy rotation). Researchers now have a rare opportunity to study this slanted disk, which is freed from the usual mottled dust cover and is studied using optics. Generally, tilted disks must be studied using infrared or radio light technology, which allows researchers to observe through dust, but limits the ability to learn more about ionized gases.

The galactic center is ionized

If these measurements can be made under optical light, it will be easier to connect the galactic core to other galaxies Compare. Many studies have measured the quantity and mass of ionized gas in the center of thousands of spiral galaxies in the universe. This is the first time that the measurement results of the Milky Way can be directly compared with the measurement results of so many galaxies. The researchers used existing models to try to predict how much ionized gas should be in these launch zones. The raw data from the WHAM telescope allowed the researchers to improve the prediction until an accurate 3D photo of the structure was obtained.

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Comparison of hydrogen, nitrogen and oxygen in the structure to produce other wavelengths Visible light, which will provide researchers with further clues about its composition and properties. The study found that at least 48%of the hydrogen in the tilted disk in the center of the Milky Way is ionized by energy from unknown sources, and the gaseous ionization structure will change when it leaves the center of the Milky Way. Previously, scientists only knew that Neutral (non-ionized) gas in the area. Near the core of the Milky Way, gas will be ionized by newly formed stars, but when it is further away from the center, the situation will become more extreme.

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Gas will become similar to a class called LINERS Galaxy, that is, the low ionization (nuclear) launch zone. The study found that this structure seems to be moving towards the earth because it is located in an elliptical orbit inside the spiral arm of the Milky Way. Linear galaxies, such as the Milky Way, account for about one-third of all galaxies. Their centers have more radiation than galaxies that only form new stars, but they are more than those Supermassive black holes galaxies that are actively consuming large amounts of matter emit less radiation, before the discovery of the WHAM telescope:

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The Andromeda Galaxy is the closest linear spiral galaxy to the Milky Way, but it is still millions of light years away. Since the Earth is only tens of thousands of light years away from the core of the Milky Way, astronomers can now study such linear regions in more detail. Studying this extended ionized gas should help us learn more about the present and past environment of the center of the galaxy. Next, the researchers need to find out the energy source in the center of the Milky Way. Being able to classify galaxies according to radiation levels is an important step towards this goal.

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Brocade Park|Research/From:Embry-Res Aeronautical University

Reference periodical”Science Progress”

DOI:10.1126/sciadv.aay9711

Brocade Park|Science, Science and Technology, Scientific Research, Popular Science

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