Astronomers detect powerful radio flares near Earth

Using the MeerKAT radio telescope, an international team of astronomers discovered radio flares at the nearest

M-class midget. This star is known as SCR 1746−3214 and is located just 39 light-years from Earth.

To date, astronomers have observed manylarge flares that come from cold dwarfs. This is because M-type stars and ultra-cool stars can exhibit high levels of magnetic activity. In general, the study of flares can provide important information about the properties of magnetic dynamos and stellar interiors; thus, researchers are interested in detecting new flare activity.

A recent study by astronomers led byAlex Andersson from the University of Oxford in the UK shows that such activity occurs in the M dwarf star SCR 1746−3214. By analyzing radio images from the MeerKAT radio telescope focused on the binary X-ray black hole H1743−322, Andersson's team accidentally discovered a new radio transition event, designated MKT J174641.0−321404. The transient was found to be associated with SCR 1746−3214, and subsequent multi-wavelength studies of this M dwarf revealed further radio flare activity.

Red dwarf - small and relativelya cool main sequence star with spectral class M. They are quite different from other stars. The diameter and mass of red dwarfs does not exceed a third of the Sun (the lower limit of mass is 0.0767 solar, followed by brown dwarfs).

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