1305.5991 (Daniel A. Hemberger et al.)

Final spin and radiated energy in numerical simulations of binary black
holes with equal masses and equal, aligned or anti-aligned spins
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Daniel A. Hemberger, Geoffrey Lovelace, Thomas J. Loredo, Lawrence E. Kidder, Mark A. Scheel, Béla Szilágyi, Nicholas W. Taylor, Saul A. Teukolsky