July 23, 2021

More mystery for "fast radio explosions" in space

More mystery for "fast radio explosions" in space

A team of Australian astronomers discovered a score of fast radio explosions, which almost doubles the known number of these powerful flashes of waves in deep space, according to a study published today and collected by Efe.

"We detected 20 rapid radio explosions in a year and almost double the number detected worldwide since they were discovered in 2007," said the author of the research, published in the journal Nature, Ryan Shannon, of the Swinburne University of Technology. .

The discovery, made with the "Australia Square Kilometer Array Pathfinder" radio telescope (ASKAP) of the Organization of Industrial and Scientific Research of the Commonwealth of Australia (CSIRO), includes the fastest and brightest fast radio explosion ever detected.

The scientists do not know the causes of rapid radio explosions, which come from all parts of the universe, last only a few milliseconds and use energy equivalent to that which would release the sun in 80 years, according to a statement from the International Center for Radio Astronomy Research (ICRAC).

Astronomers could also prove that "rapid radio explosions come from the other side of the Universe and not from our own galactic neighborhood," Shannon stressed.

The co-author of the study, Jean-Pierre Macquart, of the University of Curtin, who together with the Swinburne University of Technology, is part of ICRAR, explained that the gusts can travel billions of years and can occasionally pass through a cloud Of gas.

«Each time it passes, the different wavelengths that form a burst decelerate in different amounts (…) In the end, the burst reaches the Earth and propagates the length of its waves reaching the telescope with a slight difference of time, as if they were swimmers who reach the final line, "explained Macquart.

"The difference in the arrival of the different wavelengths tells us how much material the burst has traveled in this path (…) and, because we have shown that these fast radio bursts come from very far away, we can use them to detect the material lost in space between galaxies, "he added.

Researchers now focus on know the causes that cause the explosions and locate in what galaxies they originate.

"We can locate the bursts to more than a thousandth of a degree," said Shannon, noting that this measurement is approximately the width of a human hair seen ten meters away.

The ASKAP is located at the Murchison Observatory of CSIRO in Western Australia and is the forerunner of the future Square Kilometer Array (SKA) telescope. EFE


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