Galaxy's radio ghost: What is the real body?

The problem of astronomers: Where does the Galaxy do not meet the radio signals of any celestial body?

Astronomers detected a strange and repeated radio signal near the center of the galaxy, and this signal was different from any energy signal they had studied.

According to a paper accepted by "Magazine of Overstream" and published on the pre -printed "ARXIV", the source of energy will be extremely bright on the radio spectrum in a few weeks, and then one day in a day of a day No longer exist. Researchers wrote in their research, "This expression does not conform to our impression of any known type of celestial bodies, so this may show that with the help of radio imaging, we have discovered a new thing."

The radio supply named askap J173608.2−321635 is detected by ASKAP, which is located in the distant inland Australia's inland Australia. In an ASKAP observation of ASKAP between April 2019 and August 2020, the relevant personnel wrote: This strange signal has appeared 13 times, and they have never lasted more than several weeks in the sky. This power supply is highly variable -their appearance or disappearance is unpredictable, and it does not seem to have appeared in any other radio telescope data before the ASKAP observation.

When researchers tried to match the observation results of this energy source with other telescope (these telescopes include Chandella X -ray Observatory, Grals Swift Swift Observatory, and Chile's astronomical visible light and infrared skycathered telescope. Infrared wavelength), this signal completely disappeared. ASKAP J173608.2 looks like an unsolvable radio ghost -it is not obvious in other parts of the electromagnetic spectrum.

The previous celestial patrol has found a star with low quality and cyclical outbreak of radio energy. But those stars usually have X -ray correspondence, which makes it unlikely that a star source is here.

Dead stars, such as pulse stars and magnetic tubes (two ultra -high -density collapse stars), can not become convincing explanations.

Although pulse stars can send out the shining light beam of the earth, they are rotated in a predictable periodic, usually sweeping our telescope in a few hours instead of a few weeks of time. At the same time, the outbreak of the magnetic tourbaris also has different characteristics of ASKAP J173608.2−321635 -the outbreak of the magnetic Tuoxing always contains a powerful X -ray correspondence.

The most matched with the above features is a mysterious celestial body called "Galaxy Center Temporary Power Source" (ie GCRT). This is a fast -emitting radio supply. It usually shines and declines near the center of the galaxy. Hours. As of now, only three galaxy centers have been confirmed by the temporary radiation power supply, and these three GCRTs have disappeared faster than Askap. However, the known Galaxy Center temporarily emit the power supply that is similar to this mysterious signal, and their radio power explosion is not accompanied by X -rays.

Researchers concluded that if this new radio celestial body is GCRT, its nature will exceed the range that gCRT can reach. In the future, the Galaxy Center's radio patrol should help solve this mystery.

The Galaxy contains our solar system. Its name "Galaxy" describes what we see on the earth: it is like a hazy light belt, consisting of unsatisfactory stars. The word "Galaxy" is the translation of the Latin "VIA LACTEA", which originated from Galaktikos Kýklos, which means "milky white circle". From the perspective of the earth, the reason why the galaxy appears is because his plate -shaped structure is observed from the inside. In 1610, Galileo used telescopes for the first time to separate independent stars from this light belt. Until the early 1920s, most astronomers also believed that the galaxy contained all stars in the universe. After the great debate between astronomers Haro Shapli and Herberkis in 1920, Edwin Hubble's observation proved that the Galaxy was just one of many galaxies.

Galaxy is a rotal galaxy. It is estimated that its visible diameter is 100,000 to 200,000 light years. Recent simulation shows that a dark matter area that also contains some visible stars may expand to a diameter of nearly 2 million light years. The Galaxy has some satellite galaxies, and it is part of this galaxy group. The galaxy group is one of the room males of the room, while the Virgin Super Galaxy group belongs to a structure of the Laenian Super Galaxy group.

By: Brandon Specktor

FY: Crepusculum

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