Discover mysterious radio waves in the Milky Way

Radio emission (FRB), one of the greatest mysteries in the field of astronomy worldwide has been discovered in our galaxy system.

Known as extremely powerful radio signals, some of which can be up to 500 million times the amount of solar energy, FRBs come from deep spaces, millions of light-years away from us.

Despite containing a huge amount of energy, these radio emissions only occur in 1 / 1000th of a second - faster than the blink of an eye - and are almost non-repeatable, making such events very difficult. Predict and track.

CHIME telescope, a device specialized in detecting extraterrestrial radio waves. (Photo: CHIME FRB).

The origin of FRB

On April 28, radio observatories around the world had the opportunity to record the radio wave emissions from a dead star in the galaxy called SGR 1935 + 2154 - far from Earth. 30,000 light years. Through research and data analysis, astronomers have found the cause of these radio waves.

ScienceAlert quoted astronomer Shrinivas Kulkarni from Caltech saying that the cause of the occurrence of FRB waves comes from the intense magnetic fields of the stars.

There have been many theories about the formation of FRBs, from vibrations of supernovas to signals of aliens. However, the greatest possibility is that FRBs appear due to stars having large magnetic pulses

The most trusted hypothesis about FRB is from the explosions of a giant star. (Photo: Beijing Planetarium).

This is an extremely special neutron star, with a dense core of remnants left over after a giant star transformed into a supernova. Their magnetic fields are 1,000 times stronger than ordinary neutron stars.

When gravity tries to hold stars together, the strength of the internal magnetic force distorts the star's shape. This leads to an oscillation of energy, forming massive crystal explosions and magnetic flames.

The great discovery of astronomy

On April 27, SGR 1935 + 2154 was detected and observed by many active devices, including the Swift Burst Warning Telescope, AGILE satellites, etc. with normal operations. But just one day later, on April 28, Canada's CHIME telescope discovered a strange signal.

STARE2 , a project founded by Caltech alumni Christopher Bochenek, has received an extremely clear signal with intensity hundreds of thousands of times larger than usual. For astronomer Kulkarni, he thinks this is an extremely rare event. After correction, this signal could be transmitted from SGR 1935 + 2154, the first time scientists have captured FRB in the Milky Way.

To detect FRB, scientists must use special telescope systems, such as those with a diameter of 500 meters in China. (Photo: Xinhua).

"If this signal is coming from another galaxy, like previous FRB signals, then the measurement results are normal. This is an unprecedented event , " Kulkarni told ScienceAlert.

In addition, Mr. Kulkarni and scientists have also found something very new: X-rays and gamma rays are quite common in magnetic explosions.

Astro astrophysicist Sandro Mereghetti of the Italian National Institute of Astrophysics and the European Space Center (ESA) said the finding could be of great significance in proving there are many FRBs that we have yet to discover. out

"The FRBs identified so far are outside our own Milky Way galaxy. They have never been detected with X / Gamma rays. An X-ray explosion with a luminescence of SGR1935 would not be detectable." with sources coming from outside the Milky Way, " said Sandro Mereghetti.

No matter what the SGR 1935 + 2154 reveals to us, which is just an early accomplishment, astronomers persist in observing the stars day and night by the most modern means, try to solve the complex mysteries that these incredible signals bring.

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