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Table A.2.

Parameters d, v, mlens and Mcenter for three possible lensing scenarios given the maximum magnification of A = 6.3 and the combined mass of the two BHs Mcenter + mlens ≈ 5 × 107M.

Scenario 0 Scenario 1 Scenario 2 Scenario 3 Scenario 4
d [ld] 110 160 250 400 1000
v [km s−1] 1530 1270 1010 805 510
mlens 2.5 × 107 M 1.2 × 107 M 4.8     × 106 M 1.9     × 106 M 3 × 105 M
Mcenter 2.5 × 107 M 3.8 × 107 M 4.5     × 107 M 4.86 × 107 M 5.0 × 107 M
Mcenter + mlens 5.0 × 107 M 5.0 × 107 M 4.98 × 107 M 5.05 × 107 M 5.03 × 107 M
torbit [yr] 372 648 1279 2571 10168

Notes. The scenarios cover the distance parameter space of 110 ld ≤ d ≤ 1000 ld and, correspondingly, the velocity parameter space of 1530 km s−1 ≥ v ≥ 510 km s−1 for the lensing object.

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