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For example, in 2020 April 28 two ground-based radio telescopes captured the FRB. The flash lasted only a millisecond, but according to astronomers, it was impossible not to notice it. This outburst has spread from a location in the Milky Way galaxy 30,000 light-years from our planet, making it the closest FRB to Earth, reports sciencetimes.com.
Changes in the signs of the Milky Way.
The Canadian Hydrogen Intensity Mapping Experiment (CHIME) and Transient Radio Astronomical Emissions Study 2 (STARE2) detected an unusual signal.
According to Kiyoshi Masui, an associate professor of physics at the Massachusetts Institute of Technology, CHIME captured the signal, although the radio telescope did not point in the other direction, and STARE2 captured the signal, despite having only one set of a few simple radios. antennas.
Space.com writes that this is the first FRB to emerge from the Milky Way. The earlier signals were recorded several billion light years away, making them more difficult to study. According to astronomers, the signal was the strongest ever recorded in the Milky Way.
Knowledge of previously captured FRBs has helped astronomers determine the origin of an unusual signal from the Milky Way galaxy.
Based on several studies, the researchers hypothesize that the FRB signal source may be a magnet. Magnetars are young neutron stars born from supernova remnants with a magnetic field 5,000 trillion times stronger than Earth’s magnetic field, making them the most powerful magnets in the universe.
Mysterious signs from other galaxies
Fast bursts of radio waves last several milliseconds, they are like pulsars: a rotating neutron star that emits electromagnetic radiation of radio waves, light, etc. in the form of rays.
First FRB in 2007 captured by Duncan Lorimer and David Narkevicius, who studied data from the Parkes radio telescope. FRB is sometimes called Lorimer Bursts.
Most FRBs emanate from other galaxies. The well-known FRB 121102, registered in 2014 and at least a few hundred times since. It spread out from a small dwarf galaxy worth 3 billion. light years from Earth.
Astronomer Dr. Shivan Bhandar from Australia’s National Science Agency SCIRO recorded four more FRBs. He did this with the Australian Square Kilometer Array Pathfinder (ASKAP) in a remote region of Western Australia.
According to Forbes, the four FRBs are FRB 180924, FRB 181112, FRB 190102, and FRB 190608.
The last four FRBs ranged from three to four billion. light years from Earth, from large galaxies in which stars are slowly forming.
Source: https://www.livescience.com/strange-signal-from-milky-way.html
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