What to be? Astrnomos captures a mysterious burst of recurring radio

The good news in the world of astronomy that has not been announced by NASA, which recently revealed images of the most distant object ever observed, are rare. Yet Canadian scientists have detected 13 new fast bursts (FRBs), which are essentially mysterious energy pulses that last only a fraction of a second and reach us from unknown sources, billions of light years away. One of them, however, is recurrent, the second rapid and recurrent radio burst to document.

FRB was first detected in 2002 and so far astronomers have been trying to understand and explain where. arise from. Rapid radio bursts occur only a few milliseconds and have unpredictable appearances, making the observation a bit difficult.

These radio waves travel for billions of years in the high energy universe from distant galaxies. The most popular explanations of this phenomenon are rotating neutron stars with powerful magnetic fields called magnetars, very dense object fusions, collapsing stars, supermbadive black holes and even civilizations. aliens.

FRBs tend to be ephemeral events. , but a fast and recurring burst known as FRB 1211012 was detected by the Puerto Rican Arecibo telescope in 2012. This discovery was very important as it meant that its source, and perhaps other explosions, n & # 39; Was not a cataclysmic explosion, but something that

There is still much to learn about the FRB, but some documents published Wednesday (09) are trying to identify and badyze new clues about this enigmatic effect of the universe. One publication speaks of 13 rapid radio bursts and one of them, described in detail in the other publication, is recurrent.

The new FRBs were detected during the Canadian hydrogen intensity mapping experiment. ). Project started in 2017. Thirteen gusts were identified over a period of three weeks during the winter of 2018, when astronomers were still ensuring that the system remained connected and while CHIME was still operating at a fraction of its capabilities. [19659007] Of the 13 new FRBs, seven were unexpectedly detected at a frequency of 400 MHz, the lowest radio frequency ever measured for gusts. They are generally in the 1400 MHz range and the lowest observed up to now was 700 MHz. CHIME is intended to identify BRAs in the 400 to 800 MHz range. Nevertheless, it was a surprise to have been detected in the minimal spectrum. which suggests that there may be other pulses whose frequencies are still below 400 MHz

Different transmission mechanisms provide that FRB transmitters will be transmitted in a certain radio frequency range just like a lamp can not emit X-rays or a microwave can not emit ultraviolet light. By detecting and characterizing fast radio bursts at different frequencies, we can better understand which theories work and which ones do not work. It is still a very new field and so it is difficult to impose concrete limits on theories, but our work is a new step in that direction.

Astronomer Shriharsh Tendulkar, co-author of the new study

of the radio as they travel in space interact with the electrons and magnetic fields present in the intergalactic and interstellar plasma These interactions can cause absorption, dispersion and many other effects on radio waves. These effects may vary depending on the frequency and many of them have more impact at low frequency. It is therefore easier to measure and understand these effects at lower frequencies.

Understanding this propagation of effects and being in to separate them from FRB characteristics, we hope they can use them as probes for the distribution of electrons and magnetic fields in the universe, which would tell us a lot about how the cosmos builds and constructs its structures such as galaxies, clusters, etc.

Explained Tendulkar

The new seeker is called FRB 180814.J0422 + 73. Six recurring bursts of this source have been identified, all from the same place in outer space, at about 1.5 billion d & rsquo; Light years from Earth, almost half of the other, FRB 1211012. The presence of a second from the same source

Emily Petroff, astronomer at ASTRON, l 39; Dutch Radioastronomy Institute, and FRB specialist, examined the methods used in the studies were "particularly good" and appreciated the fact that CHIME astronomers did not try to interpret the data too often. He also stated that he was not surprised that another explosion occurred recurrently, but rather at the speed at which they found him.

I think it's a good sign for all research on FRBs that will surface in the near future. . The applicants may not be as rare as FRB 1211012 has let us believe. I look forward to the day we meet hundreds of them.

She said shortly before she was surprised at the speed with which CHIME had met so many fast radios. Moreover, by highlighting the fact that the badyzed information was not detailed data, it can not wait for what the researchers expect.

The Harvard astronomer also commented on the results obtained by CHIME. He stated that they were good and reliable and stated that CHIME was the most prolific FRB hunter in the world

The key question now is whether claimants are of different nature or scale of those of non-applicants. At first, there may be two distinct types of sources, such as gamma ray bursts (GRB), where long-term GRBs – more than a few seconds – are related to the collapse of mbadive stars and short-lived GRBs. fusion of neutron stars

He concluded