  Near infrared (NIR) wavelength observations of Uranus have been unable to
locate any infrared aurorae, despite many attempts to do so since the 1990s.
While at Jupiter and Saturn, NIR investigations have redefined our
understanding of magnetosphere ionosphere thermosphere coupling, the lack of
NIR auroral detection at Uranus means that we have lacked a window through
which to study these processes at Uranus. Here we present NIR Uranian
observations with the Keck II telescope taken on the 5 September 2006 and
detect enhanced $\text{H}_{\text{3}}^{\text{+}}$ emissions. Analysing
temperatures and column densities, we identify an 88\% increase in localized
$\text{H}_{\text{3}}^{\text{+}}$ column density, with no significant
temperature increases, consistent with auroral activity generating increased
ionization. By comparing these structures against the
$\text{Q}_{\text{3}}^{\text{mp}}$ magnetic field model and the Voyager 2
ultraviolet observations, we suggest that these regions make up sections of the
northern aurora.
