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- FRB 20190520B: New Fast Radio Burst Detected by Scientists
FRB 20190520B: New Fast Radio Burst Detected by Scientists
- 09 Jun 2022
Astronomers have detected a radio signal coming from space, the second of its kind, which raises more questions about their origins.
- The signal is coming from a galaxy believed to be nearly 3 billion light-years away. The detection of the new Fast Radio Burst (FRB), termed FRB 20190520B, raises some important questions about the origin and source of these signals.
- FRBs: These are intense but brief flashes of radio frequency emissions and these typically last milliseconds. These are known to send out repeat radio waves multiple times.
Discovery
- FRB 20190520B was detected using the Five-hundred-meter Aperture Spherical radio Telescope (FAST) in Guizhou, China in May 2019.
- Scientists followed this up with monthly observations and detected nearly 75 bursts between April 2020 and September 2020.
- The researchers localised FRB 20190520B using the US National Science Foundation (NSF)’s Karl G Jansky Very Large Array (VLA), which is a radio astronomy observatory located in central New Mexico.
Key Points
- The source of FRB 20190520B is “co-located with a compact, persistent radio source and associated with a dwarf host galaxy of high specific-star-formation.”
- The signal is supposed to be close to another unknown object, which is emitting a weaker radio signal.
- This sort of combination has only been observed in another FRB. Researchers also observed that the object constantly emits weaker radio waves between bursts.
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