LOFAR Detects Coherent Radio Emission from 19 Red Dwarfs | Sci-News.com

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Astronomers using the Low Frequency Array have detected coherent low-frequency (less than 200 MHz) radio emission from a sample of 19 red dwarf stars.
Astronomers using the Low Frequency Array (LOFAR), a large radio telescope network located mainly in the Netherlands, have detected coherent low-frequency (less than 200 MHz) radio emission from a sample of 19 red dwarf (M-dwarf) stars. Three of their detections — DG CVn, CR Dra and Gliese 3729 — are known binary systems with less than 3 AU separation. The slowest-rotating stars in the sample are candidate systems to search for star-exoplanet interaction signatures.

"We've discovered signals from 19 distant red dwarf stars, four of which are best explained by the existence of planets orbiting them," said co-author Dr. Benjamin Pope, an astronomer in the School of Mathematics and Physics at the University of Queensland and the Centre for Astrophysics at the University of Southern Queensland.

"We've long known that the planets of our own Solar System emit powerful radio waves as their magnetic fields interact with the solar wind, but radio signals from planets outside our Solar System had yet to be picked up."

"This discovery is an important…
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