Equation Icon  5c5 r4 τGW = ------3----------------------- 256G (MBH + MNS )MBHMNS 10 -----r----- 4 MBH--− 1 -MNS---−1 --m0--- −1 ≈ 1.34 × 10 yrs(6 × 106 km ) (6M ⊙ ) (1.4M ⊙) (7.4M ⊙ ) , (1 )