  SDSS J141118.31+481257.6 is an ultracompact white dwarf binary (or AM CVn
system) with an orbital period of 46 min. We analyze ~23 ks of X-ray and UV
data taken with the Neil Gehrels Swift Observatory during its first ever
recorded outbursts. The events took place 13 years after the system was
discovered. We detected 3 events in our UV data, all with amplitudes of ~7 mags
with respect to quiescence, the largests detected for an AM CVn system so far.
The first 2 events correspond to a superoutburst and the third one to another
detected outburst. The 3 episodes that we identified occurred in a period of 24
days, each one displaying very rapid brightness changes. At ~120 days since the
detection of the superoutburst, the system remains 1 magnitude brighter in UV
compared to the quiescence level. The X-ray observations suggest that the X-ray
emission is not correlated with the UV.

High Energy Astrophysical Phenomena;Solar and Stellar Astrophysics