1. Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
2. Physics Department, Tor Vergata University of Rome, Via della Ricerca Scientifica 1, 00133 Rome, Italy.
3. INAF Astronomical Observatory of Rome, Via Frascati 33, 00040 Monte Porzio Catone, Italy.
4. INFN—Rome Tor Vergata, Via della Ricerca Scientifica 1, 00133 Rome, Italy.
5. Department of Astronomy, University of Maryland, College Park, MD 20742, USA.
6. NASA Goddard Space Flight Center, Code 662, Greenbelt, MD 20771, USA.
7. Astronomical Institute of the Czech Academy of Sciences, Prague, Czech Republic.
8. Department of Theoretical Physics and Astrophysics, Masaryk University, Brno, Czech Republic.
9. Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital, 263002, India.
10. Department of Physics, Syracuse University, Syracuse, NY 13244, USA.
11. Sydney Institute for Astronomy, School of Physics, The University of Sydney, New South Wales 2006, Australia.
12. Astrophysics, Department of Physics, University of Oxford, Oxford, UK.
13. The Observatories of the Carnegie Institution for Science, 813 Santa Barbara St., Pasadena, CA 91101, USA.
14. Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA.
15. Institute for Astronomy, University of Hawaii, Honolulu, HI 96822, USA.
16. School of Natural Sciences, Institute for Advanced Study, 1 Einstein Drive, Princeton, NJ 08540, USA.
17. NASA Hubble Fellowship Program, Einstein Fellow, Space Telescope Science Institute, 3700 San Martin Dr, Baltimore, MD 21218, USA.
18. Center for Computational Astrophysics, Flatiron Institute, 162 5th Avenue, New York, NY 10010, USA.
19. Charles University, Prague, Czech Republic.
20. Racah Institute of Physics, The Hebrew University of Jerusalem, Jerusalem, Israel.
21. Leiden Observatory, Leiden University, Leiden, Netherlands.
22. University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA.
23. Department of Physics, Technion–Israel Institute of Technology, Haifa, Israel.
24. ARC Centre of Excellence for Gravitational Wave Discovery (OzGrav), Hawthorn, Victoria, Australia.
25. Center for Astrophysics | Harvard & Smithsonian, 60 Garden St, Cambridge, MA 02138, USA.
26. European Southern Observatory, Santiago, Chile.
27. Max-Planck Institute for Extraterrestrial Physics, Garching, Germany.
28. University of Cambridge, Cambridge, UK.
29. Department of Physics and McDonnell Center for the Space Sciences, Washington University, St. Louis, MO 63130, USA.
30. University of Southampton, Southampton, UK.
31. Center for Research and Exploration in Space Science & Technology II (CRESST II), NASA/GSFC, Greenbelt, MD 20771, USA.