[1] Johns Hopkins Univ, William H Miller III Dept Phys & Astron, 3400 North Charles St, Baltimore, MD 21218 USA
[2] Northwestern Univ, Ctr Interdisciplinary Explorat & Res Astrophys CIE, 1800 Sherman Ave, Evanston, IL 60201 USA
[3] Northwestern Univ, Dept Phys & Astron, 1800 Sherman Ave, Evanston, IL 60201 USA
[4] Niels Bohr Int Acad, Niels Bohr Inst, Blegdamsvej 17, DK-2100 Copenhagen, Denmark
[5] Univ Lisboa UL, Inst Super Tecn IST, Dept Fis, CENTRA, Ave Rovisco Pais 1, P-1049001 Lisbon, Portugal
[6] Friedrich Schiller Univ Jena, Theoret Phys Inst, Frobelstieg 1, D-07743 Jena, Germany
[7] Univ Pisa, Dipartimento Fis Enrico Fermi, I-56127 Pisa, Italy
[8] Penn State Univ, Inst Gravitat & Cosmos, Dept Phys, University Pk, PA 16802 USA
[9] Flatiron Inst, Ctr Computat Astrophys, New York, NY 10010 USA