2004MNRAS.354..913B

We have observed the nearest known brown dwarfs, the binary system ε Indi Bab (d= 3.626 pc), for 8.6- and 4.8-GHz radio emission with the Australia Telescope Compact Array. If either brown dwarf emits radio flares, then they are respectively at least 5.5 and 1.2 times weaker than LP 944-20, the nearest brown dwarf with detected radio emission. We associate the ROSAT source 1WGA J2203.9-5647 with ε Indi Bab since the separation was about 30 arcsec at the time of the ROSAT observation. Assuming the association, then ε Indi Bab has an L_0.4–2.4keV X-ray luminosity of 5.6x10²⁵ erg/s which makes it roughly a factor of 2 less luminous than LP 944-20. The radio non-detections imply that ε Indi Bab does not violate, or at least does not violate as strongly as LP 944-20, the Güdel-Benz relationship of X-ray and radio emission.