Astron. Astrophys. 338, 781-794 (1998)

Acknowledgements

We thank the referees I. Lehmann and G. Hasinger for helpful comments. This research made use of SAXDAS linearized and cleaned event files produced at the BeppoSAX Science Data Center.

This work was partially supported by the Italian National Research Council (CNR) and by the Italian Space Agency (ASI). In particular MS, RM, and GR acknowledge the partial financial support from ASI through grant ARS-96-66, while GZ acknowledges financial support from ASI through grants 95-RS-152 and ARS-96-70.

© European Southern Observatory (ESO) 1998

Online publication: September 17, 1998
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