Tempo de leitura: menos de 1 minuto
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Of the secrets of the most pressing revealed by astronomy in recent years, the so-called quick bursts of radio (in English, FRB) are among the most intrigue. The source of these signals is not known: are the radio waves that pulse is measured on a scale of milliseconds. Results without want to in 2007, the mysterious bursts repeated was recorded in 2015 by the Observatory of Arecibo, Puerto Rico. Canadian researchers have announced that the enigmatic FRBs sequential detected again.
Discover a range of ringing tones, the new telescope is located in a valley in British Columbia. Last summer in the northern hemisphere, the instrument I spent three weeks in the search for FRBs — I found all 13. The results described in the article published in the journal Nature. Most of the bursts showed signs of saturation, a trait that can be explained by the physics of astronomical objects strong in specific locations, such as in the center of the Galaxy, or in the densest parts of the supernova remnant.
The unusual characteristic of bursts has been captured by the resonance frequency is: are unusually low. Unlike the FRBs earlier, the frequency about 1.4 thousand megahertz (MHz) new does not exceed 800 MHz. Seven of them hit the mark of 400 MHz, the lowest frequency at which. To get an idea of how to FRBs strong FM radio signal vary between 87.5 and 108 MHz.
Most astronomers believe that source to be natural causes, such as extreme events involving black holes or merging neutron stars superdensas. However, the respected names in the scientific community and raise the chances of the characters are more eccentric. There is a small probability that the bursts are the fruit of advanced technological activity of any alien advanced civilization billions of light-years.
In 2017, Professor Avi Loeb of the Center for Astrophysics at Harvard-Smithsonian, and fellow Manasvi Lingam from Harvard University, proposed a FRBs can be “leaks” of the strongest signals emitted from technological artifacts from planets and dimensions are made by aliens from other galaxies. Loeb and Lingam say in the article that radio signals can originate from transmitters on the giant with the aim of accelerating the spacecraft in the same way that a sailing boat uses the wind to get around.
While the new studies are not able to provide some of these natural phenomenon that fits into the exotic features of quick bursts of radio, the option that the alien may not be excluded. Even today, only 60 FRBs have been documented by science, the vast majority having come to the earth alone, and not in the recurrence of the registry. Scientists expect that technological advances will soon allow us to collect a much larger number of these pulses — and maybe, just maybe, we discover that we are not alone in the universe.