  Swift/BAT detected the first burst from 1E 1841-045 in May 2010 with
intermittent burst activity recorded through at least July 2011. Here we
present Swift and Fermi/GBM observations of this burst activity and search for
correlated changes to the persistent X-ray emission of the source. The T90
durations of the bursts range between 18-140 ms, comparable to other magnetar
burst durations, while the energy released in each burst ranges between (0.8 -
25)E38 erg, which is in the low side of SGR bursts. We find that the bursting
activity did not have a significant effect on the persistent flux level of the
source. We argue that the mechanism leading to this sporadic burst activity in
1E 1841-045 might not involve large scale restructuring (either crustal or
magnetospheric) as seen in other magnetar sources.
