| Institution: | Mullard Space Science Laboratory, University College London, Holmbury St Mary, Dorking, Surrey RH5 6NT;School of Physics and Astronomy, University of Southampton, Highfield, Southampton SO17 1BJ;Department of Astronomy and Astrophysics, Pennsylvania State University, 525 Davey Laboratory, University Park, PA 16802, USA;Department of Physics and Astronomy, University of Leicester, University Road, Leicester LE1 7RH;NASA Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, MD 20771, USA |
