Institution: | (1) Physics Department, McGill University, Rutherford Physics Building, 3600 University Street, Montreal, Qc, H3A 2T8, Canada;(2) NASA Goddard Space Flight Center Code 662, X-ray Astrophysics Laboratory, Greenbelt, MD 20771, USA;(3) Australia National Telescope Facility, CSIRO, P.O. Box 76, Epping, NSW, 1710, Australia;(4) Columbia Astrophysics Laboratory, Columbia University, 550 West 120th Street, New York, NY 10027-6601, USA;(5) Netherlands Institute for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, Netherlands |