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19 strange radio signals transmitted to Earth: 4 new planets discovered

Tuesday, October 12, 2021 15:05 PM (GMT+7)

The Dutch radio telescope LOFAR has just picked up strange radio signals from red dwarf stars within a 160 light-year radius of Earth.

“We have detected radio signals transmitted from 19 distant red dwarf stars, four of which provide the most plausible explanation for the existence of at least one planet orbiting them,” said Science. Daily quoted astrophysicist Benjamin Pope of the University of Queensland (Australia), a member of the research team, as saying.

The interaction between the red dwarf and its planet may be the culprit behind the mysterious radio signals – Photo: NEW SCIENTIST

According to Science Alert, this is not a “technology signature” referring to an alien civilization, but rather the result of an interaction between the exoplanet and the parent star’s magnetic field, creating the aurora. powerful that LOFAR – a low-frequency array radio telescope – can “see”.

This is an unusual phenomenon because in the past, although many radio signals due to interactions between such objects inside the solar system have been recorded before, no one thought that such a thing could be found in the exoplanets. planet.

The discovery is considered an important step in radio astronomy because it shows that magnetic interactions between distant objects, if powerful enough, Earth’s increasingly modern radio telescopes can still record. receive. The same “explosive” interaction was received between Jupiter and its moon Io, creating powerful and permanent auroras at the Jovian poles and making the pair brilliant in radio observations.

With this new way of observing, astronomers hope to be able to search for many hidden planets – similar to the four mentioned above – that are too dark, too distant and located in a hidden position to be observed with any other means. any other means.

The study has just been published in the scientific journal Nature.


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