A strange repeating signal is coming from a distant galaxy: astronomers do not yet know what it is

The source was first found in 2019 and named FRB 190520B. It emits millisecond bursts very often

powerful radio waves.

Based on these data, astronomers conducted an analysis,which helped to understand where it comes from in the universe and in the space around it. According to the team, there are probably several mechanisms in space capable of producing these strange flashes at once.

Most of these outbreaks were recorded onlyonce: they appear out of nowhere, explode, and then disappear forever. Therefore, they are difficult to predict and track. But several sources turned out to be repetitive.

The studied FRB 190520B belonged just tothe second type. Astronomers have made additional observations and determined several of its amazing characteristics. It turned out that the signals came from the outskirts of a very old dwarf galaxy located at a distance of almost 4 billion light years.

In the intervals between radio bursts, the sourceproduces weaker radio emission. This suggests that fast radio bursts come from a compact constant radio source, the nature of which is unknown.

Based on the results of the work, they concluded that the source of bursts can be located in a very complex plasma environment, and that it was formed quite recently.

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