  A sine-Gordon breather enhances the heat transfer in a thermally biased long
Josephson junction. This solitonic channel allows for the tailoring of the
local temperature throughout the system. Furthermore, the phenomenon implies a
clear thermal fingerprint for the breather, and thus a 'non-destructive'
breather detection strategy is proposed here. Distinct breathing frequencies
result in morphologically different local temperature peaks, which can be
identified in an experiment.
