Unexpected Default in an Information Based Model
  This paper provides sufficient conditions for the time of bankruptcy (of a company or a state) for being a totally inaccessible stopping time and provides the explicit computation of its compensator in a framework where the flow of market information on the default is modelled explicitly with a Brownian bridge between 0 and 0 on a random time interval. 
Matteo Ludovico Bedini, Rainer Buckdahn, Hans-J\"urgen Engelbert
math.PR q-fin.MF