"In recent years it has been discovered that these brown dwarfs can be extremely bright sources of radio emission. Up to now it has been unclear how these failed stars can produce such high levels of this nature of radiation. Initially, it was assumed that it was the same kind of radio emission as that detected from stars such as our Sun. For such stars, the radio emission is produced by high energy electrons in the star's corona which are trapped spiralling in the star's magnetic field.
However, our recent observations conducted with the Very Large Array radio telescope in New Mexico, together with optical telescopes at the US Naval Observatory and Vatican Observatory, have shown that this model is incorrect. We have detected extremely bright periodic pulses of radiation from a number of these objects which cannot be explained by the conventional processes associated with stellar radio emission. During these pulses, these supposedly failed stars are tens of thousands of times brighter than our Sun at radio frequencies! Instead a much more exotic process is required to explain such bright radio emission.
It turns out that the answer to this mystery is not to be found in the study of the radio emission from the stars but instead from the planets in our Solar System. All the magnetized planets, including Earth, are observed to emit extremely bright radio emission from their magnetic polar regions. Indeed, Jupiter can produce radio emission at low frequencies brighter than that detected from the Sun. This radiation is not produced by the same mechanism responsible for stellar radio emission but rather by a coherent process, the electron cyclotron maser, that can amplify the radiation to extremely high levels."
Is
this what you're looking for?
Source.
I'm asking a question, VanRijn, and you answered with a question.
As I understand it, BD's radio emissions are, or can be, these very high energy electrons.
So, again, is there anyone else who thinks this "mysterious source" could be a BD?