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Hierbei handelt es sich um natürliche Radioemissionen im Zusammenhang mit Auroras, die von Elektronen im Magnetfeld des Planeten erzeugt werden:
Discovery of radio emission from the exoplanet β Pictoris b
Astronomers detect radio signals coming from an exoplanet for the first time
Discovery of radio emission from the exoplanet β Pictoris b
Here, we report the first direct detection of auroral radio emission from an exoplanet, the giant planet β Pictoris b, with the MeerKAT array. We detect rapid, recurring, and highly circularly polarized bursts, as well as persistent emission, at frequencies of 0.85 to 3.5 GHz. We identify the emission as electron cyclotron maser radiation, which implies a magnetic field of ≳1.25 kG at the planet, the first such direct field strength measurement for an exoplanet.
Astronomers detect radio signals coming from an exoplanet for the first time