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The XMM-SSC survey of hard-spectrum XMM–Newton sources – I. Optically bright sources
Authors:M J Page  I Lehmann  Th Boller  M G Watson  T Dwelly  S Hess  I Matute  N S Loaring  S Rosen  H Ziaeepour  A Schwope  G Lamer  F J Carrera  J Tedds  R Della Ceca  P Severgnini  R G McMahon  W Yuan
Institution:Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT;Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, Postfach 1312, 85741 Garching, Germany;Department of Physics and Astronomy, University of Leicester, Leicester LE1 7RH;School of Physics and Astronomy, University of Southampton, Southampton SO17 1BJ;South African Astronomical Observatory, Observatory, 7935 Cape Town, South Africa;Astrophysikalisches Institut Potsdam (AIP), An der Sternwarte 16, 14482 Potsdam, Germany;Instituto de Física de Cantabria (CSIC –Universidad de Cantabria), 39005 Santander, Spain;INAF –Osservatorio Astronomico di Brera, via Brera 28, I-20121 Milano, Italy;University of Cambridge, Institute of Astronomy, Madingley Road, Cambridge CB3 0HA;National Astronomical Observatory of China/Yunnan Observatory, Kunming 650011, PO Box 110, Yunnan, China
Abstract:
Keywords:galaxies: active  X-rays: galaxies
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