On monads of exact reflective localizations of Abelian categories
  In this paper we define Gabriel monads as the idempotent monads associated to exact reflective localizations in Abelian categories and characterize them by a simple set of properties. The coimage of a Gabriel monad is a Serre quotient category. The Gabriel monad induces an equivalence between its coimage and its image, the localizing subcategory of local objects. 
Mohamed Barakat and Markus Lange-Hegermann
math.CT