Abstract: For more than thirty years, radio
astronomers have searched for auroral emission from exoplanets. With
LOFAR we have recently detected strong, highly circularly polarised
low-frequency (144 MHz) radio emission associated with a M-dwarf - the
expected signpost of such radiation. The star itself is quiescent,
with a 130-day rotation period and low X-ray luminosity. In this talk,
I will detail how the radio properties of the detection imply that
such emission is generated by the presence of an exoplanet in a short
period orbit around the star. I will also discuss how our LOFAR
observations represents the most comprehensive survey of stellar
systems at low frequencies, and the implications of this new
population we have detected in understanding the magnetosphere of M
dwarfs, brown dwarf, and exoplanetary magnetic fields. I will conclude
with some unexpected results we have derived from a Stokes V all-sky
survey.
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