Astronomers Detect Radio Signals From Exoplanet Beta Pictoris b
Summary
Astronomers have directly detected radio signals from the exoplanet Beta Pictoris b, confirming that the emission comes from aurorae generated by its magnetic field rather than its parent star. The finding also provides the first direct measurement of an exoplanet's magnetic field strength.
Key Points
- Astronomers directly detected radio signals from the exoplanet Beta Pictoris b for the first time.
- The emission was traced to aurorae produced by the planet’s magnetic field interacting with its atmosphere, not to the parent star.
- Researchers used South Africa’s MeerKAT radio telescope and positional mapping with quasars to confirm the signal’s origin.
- The planet’s magnetic field at the source of the radio waves is estimated at at least 1,250 gauss, far stronger than Jupiter’s.
