2023-12-28 08:01:00
American astronomers from Cornell University have for the first time discovered a cosmic event that may turn out to be a new type of stellar cataclysm. Observations have shown that a distant star 1 billion light years from Earth has somehow returned to life after the explosion that killed it. The study was published in the scientific journal Nature, Day.Az reports with reference to Gazeta.ru.
According to scientists, the object, called AT2022tsd, continued to emit powerful energy bursts for 120 days, each of which lasted several minutes and was comparable in strength to the initial explosion. The researchers concluded that they were dealing with an extremely rare phenomenon known as fast blue optical transient (LFBOT). However, the intensity and duration of AT2022tsd eruptions were greater than those previously recorded by LFBOT.
“Nobody knew what to say. We had never seen anything like this before – something as fast and as strong in brightness as the initial explosion a few months later – in any supernova or LFBOT. Surprisingly, instead of gradually disappearing as one would expect, the source briefly became brighter again. This happened again and again. LFBOTs themselves are an exotic event, so this was even stranger,” said study lead author Anna Ho.
Astronomers intend to find out what exactly caused such atypical behavior of the exploding star. They suspect that the source of the emissions may be a nearby black hole, whose magnetic field directs jets of matter left over from the star.
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