| Affiliation: | School of Physics and Astronomy, Southampton University, Highfield, Southampton SO17 1BJ;Harvard–Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA;Universities Space Research Association, X-ray Astrophysics Laboratory, Mail Code 662, NASA Goddard Space Flight Centre Greenbelt, MD 20771, USA;South African Astronomical Observatory, Observatory, 7935 Cape Town, South Africa;Southern African Large Telescope Foundation, Observatory, 7935 Cape Town, South Africa |
