We study the propagation of relativistic jets originating from AGNs within
the Interstellar/Intergalactic Medium of their host galaxies, and use it to
build a model for the suppression of stellar formation within the expanding
cocoon.Comment: 2 pages, 3 figures. Poster presented at IAU Symp. no. 245 ("Formation
and Evolution of Galaxy Bulges"), Oxford, July 16-20, 200