New, unusual, repetitive radio explosions found 3 billion light-years away

New, unusual, repetitive radio explosions found 3 billion light-years away

According to new research, the cosmic body is different compared to other findings from radio explosions in recent years.

Rapid radio explosions, or FRBs, are explosions of millisecond-long radio waves in space. Once a single radio explosion is emitted, it will not recur. But it is known that repeated rapid radio explosions transmit short and energetic radio waves several times.

Astronomers have been able to bring some radio explosions back to their original galaxy, but they have not determined the exact cause of these explosions. Learning more about the origin of these bright and intense radio emissions will help scientists to understand why.

On May 20, 2019, astronomers discovered an object named FRB 190520 when they emitted an explosion of radio waves. Researchers in China have used a 500-meter aperture spherical radio telescope or fast telescope to detect an explosion. November 2019. After further observations, astronomers noticed something unusual – the object repeatedly emitted radio waves.

In 2020, the team used the Subaru Telescope in Hawaii to determine the origin of the explosion before focusing on the explosion. Janski used a very large array telescope or VLA. Subaru’s observations in visible light indicate that the explosion occurred from the perimeter of a distant dwarf galaxy.

Detailed study of published results Nature Magazine Wednesday.

Two of the same type

VLA observations also revealed celestial bodies The body constantly emits weak radio waves between repeated bursts. This is very similar to the famous Repeating Fast Radio Burst discovered in 2016: FRB 121102.

Preliminary detection and follow-up tracking FRB 1211102 A small dwarf galaxy about 3 billion light-years away from astronomical progress is returning to its origin. This is the first time astronomers have been able to study the distance and environment of these mysterious objects.

“We now need to explain this dual confusion as to why FRBs and static radio sources are sometimes found together,” said Casey Low, co-author of the study, a radio astronomer at Caltech. “Is this normal when the FRB is small? Or is the object that exploded a supermassive black hole that anarchically swallowed a neighboring star? Theorists have a lot of details to work on right now, and the potential for interpretation is shrinking.

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Currently, less than 5% of the hundreds of identified FRBs are repeated, and only a few are permanently active.

Only FRB 190520 has been continuously active, meaning it has not been “turned off” since its discovery, said De Li, lead scientist at China’s National Astronomical Radio Observatory Department and Rapid Operations Center. Lee, meanwhile, said FRB 121102, “the first known large repeater, could be inactive for months.”

New question

While astronomers are now wondering if there are two types of fast radio explosions, the latest finding raises further questions.

“Is it different from repeating? What about continuous radio broadcasting – is it normal? Kshitij Agarwal, a co-author of the study, who attended his studies as a doctoral student at the University of West Virginia, said in a statement.

Hundreds of mysterious high-speed radio explosions have been detected in space

It may be another mechanism that causes radio impulses or everything they produce works differently. At different stages of development.

Scientists have previously speculated that rapid radio explosions may have been caused by dense debris left by neutron stars with very strong magnetic fields known as supernovae or magnets, also known as neutron stars.

This is an artist's idea of ​​a neutron star with a very strong magnetic field, called a magnetic field (red) that emits radio waves.

FRB 190520 is considered a possible ‘nusant’ organism Low said it was because of the busy surroundings. This environment can be caused by supernovae emitting substances that result in the formation of a neutron star. As this material disintegrates over time, the flux of FRB 190520 may decrease with age.

Going forward, Li wants to find faster radio explosions.

“A consistent picture of the origin and evolution of FRBs is likely to emerge in a few years,” Lee said.

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Lou is excited about the implications of a new type of radio wave source.

“For decades, astronomers have believed that there are two basic types of radio sources that we can see in other galaxies: the massive black hole collection and star formation,” Lu said. “We say it can no longer be a classification and / or classification! There is a new kid in town, and we need to keep that in mind when learning about the radio source group in the universe.

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