The authors would like to warmly thank the whole Beppo-SAX team, whose intelligent and hard work made possible this observation to be successfully performed. The authors acknowledge valuable suggestions from M.Cappi, P.Giommi and F.Haardt and a careful revision of the manuscript by S. Kaiser. M.G. acknowledges an ESA Research Fellowship. A.C. and G.M.S. acknowledge financial support from ASI contract ARS96-70. This work has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, Caltech, under contract with N.A.S.A., and of the cleaned and linearized event files produced at the Beppo-SAX Science Data Center.
© European Southern Observatory (ESO) 1998
Online publication: October 21, 1998