WISEPA J062309.94-045624.6 (also called WISE J0623-0456) is a brown dwarf of spectral type T8.

Follow-up observations were carried out with the Australia Telescope Compact Array (ATCA) and MeerKAT.

The researchers therefore think that the radio emission comes from electron cyclotron maser instability (ECMI), which is connected to aurora in ultracool dwarfs.

[2] Another work finds that the shape of the lightcurve can be reproduced by active field lines (AFLs).

The alternative is that the plasma is fed to the magnetosphere from a companion, similar to the role of Io for the aurora on Jupiter.