The massive Kaluza-Klein monopole

We construct the (bosonic) effective worldvolume action of an M-theory Kaluza–Klein monopole in a background given by the bosonic sector of eleven-dimensional massive supergravity, i.e. a “massive Kaluza–Klein monopole”. As a consistency check we show that the direct dimensional reduction along the isometry direction of the Taub–NUT space leads to the massive D-6-brane. We furthermore perform a double dimensional reduction in the massless case and obtain the effective worldvolume action of a Type IIA Kaluza–Klein monopole.