Mysterious radio signal traced to a dead star inside our galaxy

SPACE

Astrophysicists have received confirmation of the theory that magnetars can be the source of fast radio bursts. This information was presented to them by the incident with the object SGR 1935 + 2154, which emitted a double signal on April 28 of this year. It took the scientists time to process the data, but now they are confident that the signal came from this neutron star.

Magnetars are known as powerful sources of X-ray radiation, and radiation in the radio range is completely impossible for them, according to a number of theories. However, last spring, the ESA Integral satellite detected an X-ray burst from SGR 1935 + 2154, and in parallel, the CHIME and STARE2 radio telescopes caught a fast radio burst from the same source. This is the first ever recorded fact of radio emission from a magnetar, and even such a power.

However, scientists are in no hurry to call magnetars the main sources of fast radio bursts. First, the radio signal from SGR 1935 + 2154 turned out to be significantly weaker than radio bursts coming from outside our galaxy. Secondly, it is impossible to judge a phenomenon by a single case. It is possible that there was a slight side effect with the non-standard emission from SGR 1935 + 2154.

Even if the connection between the SGR 1935 + 2154 magnetar and radio bursts is proven, this does not mean that other space objects, which are not yet known, cannot be their source either. On the other hand, a big and unambiguous step has been taken in the study of this phenomenon. forward.

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