2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/5533As part of a research of elusive AGN in a well defined sample of infrared selected galaxies (using BeppoSAX, Chandra, XMM-Newton and INTEGRAL data) we have observed with BeppoSAX the merging starburst system Arp 299. The broad-band (0.1-40 keV) coverage of this observation clearly reveals, for the first time in this system, the presence of a deeply buried AGN having an intrinsic luminosity of L(0.5-100 keV) = 1.9E43 cgs.4 pages, 4 figures. Proceedings of the 5th Italian AGN Meeting "Inflows, Outflows and Reprocessing around black holes" (2002) on-line edition only available at http://www.unico.it/ilaria/AGN5/proceedings.htmlAstrophysicstext