The nature of this phenomenon remains a mystery to researchers.
An international group of astronomers has discovered a second fast radio burst, which constantly repeated. This raises the question of what underlies this mysterious phenomenon, according to Space.com.
Fast radio bursts (FRB) are intense, short bursts of radio frequency radiation that last for milliseconds. The phenomenon was discovered in 2007, but the source of these extremely energetic events still remains a mystery to researchers.
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A new burst FRB 20190520B was detected by the FAST telescope in China. It was recorded on May 20, 2019 and found in the data in November of that year.
Subsequent observations with the Jansky Very Large Array (VLA) program revealed weak, repetitive radiation associated with this radio burst. This allowed the Subaru telescope to locate its source within a dwarf galaxy three billion light-years from Earth. According to scientists, the second signal became the “twin” of the first.
The discovery raises new questions about the nature of these signals. For example, whether the FRB source may change over time and whether the sources differ in different FRBs.
“One of the key issues in the FRB is whether all sources of the FRB are repeated. Personally, I prefer an evolutionary picture in which all sources are repeated, but the level of activity falls sharply as the source ages. This is only the second of 500 known FRBs that is repetitive and has “twins”, and both are surprisingly active. In this hypothetical evolutionary picture, they may represent the short-lived youth of the FRB, ”said Di Li of the National Astronomical Observatory of China (NAOC).
that its emissions passed through the highest electron density among all FRBs before they were detected on Earth. This suggests that FRB is active in a local plasma environment, such as a supernova, and is a recent source.
Previously, scientists from the National Astronomical Observatory of the Chinese Academy of Sciences Three fast radio bursts have been discovered in the world of the FAST radio telescope . According to researchers, these radio bursts took place billions of years ago when the universe was young.
