1. European Space Technology Centre, European Space Agency, Keplerlaan 1, NL-2200 AG Noordwijk, the Netherlands
2. Albert-Einstein-Institut, Max-Planck-Institut für Gravitationsphysik und Leibniz Universität Hannover, Callinstraße 38, D-30167 Hannover, Germany
3. APC, Univ Paris Diderot, CNRS/IN2P3, CEA/lrfu, Obs de Paris, Sorbonne Paris Cité, 75013 Paris, France
4. Department of Industrial Engineering, University of Trento, via Sommarive 9, I-38123 Trento, and Trento Institute for Fundamental Physics and Application / INFN, Italy
5. Dipartimento di Fisica, Università di Trento and Trento Institute for Fundamental Physics and Application / INFN, I-38123 Povo, Trento, Italy
6. Istituto di Fotonica e Nanotecnologie, CNR-Fondazione Bruno Kessler, I-38123 Povo, Trento, Italy
7. DISPEA, Università di Urbino ‘Carlo Bo’, Via S. Chiara 27, I-61029 Urbino/INFN, Italy
8. The School of Physics and Astronomy, University of Birmingham, Birmingham B15 2TT, UK
9. European Space Astronomy Centre, European Space Agency, Villanueva de la Cañada, E-28692 Madrid, Spain
10. Institut für Geophysik, ETH Zürich, Sonneggstrasse 5, CH-8092, Zürich, Switzerland
11. The UK Astronomy Technology Centre, Royal Observatory, Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK
12. Institut de Ciències de l’Espai (ICE,CSIC) and Institut d'Estudis Espacials de Catalunya (IEEC), Campus UAB, Carrer de Can Magrans s/n, E-08193 Cerdanyola del Vallès, Spain
13. European Space Operations Centre, European Space Agency, D-64293 Darmstadt, Germany
14. High Energy Physics Group, Physics Department, Imperial College London, Blackett Laboratory, Prince Consort Road, London SW7 2BW, UK
15. Department of Mechanical and Aerospace Engineering, MAE-A, PO Box 116250, University of Florida, Gainesville, Florida 32611, USA
16. Physik Institut, Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland
17. SUPA, Institute for Gravitational Research, School of Physics and Astronomy, University of Glasgow, Glasgow G12 8QQ, UK
18. Department d’Enginyeria Electrònica, Universitat Politècnica de Catalunya, E-08034 Barcelona, Spain
19. Deutsches Zentrum für Luft- und Raumfahrt, Robert-Hooke-Str. 7, D-28359 Bremen, Germany
20. Gravitational Astrophysics Lab, NASA Goddard Space Flight Center, 8800 Greenbelt Road, Greenbelt, MD 20771 USA
21. Airbus Defence and Space, Gunnels Wood Road, Stevenage, Hertfordshire SG1 2AS, UK