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Arthur T Knackerbracket scopes this object:

The object in question, which goes by the catchy name LSR J1835 + 3259, is awkwardly on the boundary between a small star and a brown dwarf (an object with insufficient mass to set off hydrogen fusion). Like many other objects of this size, it rotates rapidly, completing one go-around in just under three hours.

Each time around, LSR J1835 sent a burst of radio emissions Earth's way. This suggests that there's a single source of radio emissions that is rotating with the object. The authors of the new paper added visible observations, which detected hydrogen emissions that also showed this pulsed pattern. There were also indications of the presence of negatively charged hydrogen ions (hydrogen carrying an extra electron).

All of these observations, the authors argue, can be explained by a single phenomenon: a beam of electrons striking the atmosphere of LSR J1835, setting off an aurora. Based on their various measurements, the authors estimate that the magnetic field strength in the region is at least 1,500 Gauss, and could be double that (for comparison, the Earth's magnetic field is about half a Gauss). They also estimate that the electron beam carries over 10¹⁷ Watts of power.

LSR J1835+3259 was first measured in 2001-02 and is about 18.48 light years away from Earth.

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