1. Centre for Fusion, Space and Astrophysics Physics Department University of Warwick Coventry UK
2. Department of Mathematics and Statistics University of Tromso Tromso Norway
3. London School of Economics and Political Science Grantham Research Institute on Climate Change and the Environment London UK
4. Faculty of Science, Technology, Engineering, and Mathematics School of Engineering and Innovation The Open University Milton Keynes UK
5. Institute of Mathematics and Computer Sciences São Paulo University São Carlos Brazil
6. Department of Physics Imperial College London London UK
7. Johns Hopkins University Applied Physics Laboratory Laurel MD USA
8. Department of Physics and Technology University of Bergen Bergen Norway