  LOFAR, the Low Frequency Array, is a new radio telescope under construction
in the Netherlands, designed to operate between 30 and 240 MHz. The Transients
Key Project is one of the four Key Science Projects which comprise the core
LOFAR science case. The remit of the Transients Key Project is to study
variable and transient radio sources detected by LOFAR, on timescales from
milliseconds to years. This will be achieved via both regular snapshot
monitoring of historical and newly-discovered radio variables and, most
radically, the development of a `Radio Sky Monitor' which will survey a large
fraction of the northern sky on a daily basis.
