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The scientists were able to detect a burst of radiation from a star system containing the so-called hot Jupiter.
Magnetic field of the planet / photo Jack Madden / Cornell University
With the help of a radio telescope, astronomers for the first time recorded a radio signal from an exoplanet orbiting a star in the constellation Bootes.
American astronomers say that with this discovery they took the first steps to use radio emission peaks to reveal new exoplanetary mysteries.
“Observing the planet’s aurora is the most promising method for detecting exoplanetary magnetic fields,” explained Cornell University astronomer Jake Turner and his colleagues.
When the stellar wind – charged particles emanating from the host star – hits the planet’s magnetic field, the change in its speed can be detected as striking changes in radio emission, statistically described as “jerky.”
Earth’s own magnetic field vibrates and screeches like alien birds directing the solar wind. We have also heard similar screams from other planets in our solar system.
Of course, to detect the whisper of such radio signals emanating from an exoplanet, scientists first need a way to get past all the noise from Earth and elsewhere. The team developed the BOREALIS conveyor program for this several years ago.
There have already been several preliminary discoveries of new planets using this radio emission, including earlier this year, when astronomers linked the activity of radio waves to the interaction between the magnetic field of the star GJ 1151 and a potential planet. the size of the Earth. But all of this has yet to be confirmed by further radio observations.
Now, using the LOFAR radio telescope in the Netherlands, scientists have been able to detect a burst of radiation from a star system that contains the so-called hot Jupiter, a gas giant that is about to become a star.
Read alsoScientists have discovered a new planet using a radio signal.
The signal they detected is weak and must be verified with other low-frequency telescopes before researchers can confirm the true origin of the detected radio emissions.
“We cannot rule out stellar eruptions as a source of emissions,” the researchers warn, but the probability of emissions from the planet remains high.
If other telescopes such as LOFAR-LBA and NenuFAR can confirm these findings, such detections of radio emissions from exoplanets will open up an exciting new field of research, providing us with a potential way to delve deeper into alien worlds.
An exoplanet, or extrasolar planet, is a planet outside the solar system.
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