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Fig. 26.

image

Top panel: semi-major axis–eccentricity evolution for two inspiral BHBs with mass MBHB = 80 M, eccentricity e = 0.999, and corresponding semi-major axis a = 0.044 AU (dotted red line), 0.44 AU (dotted-dashed red line), or 4.4 AU (straight red line). The dashed black line marks the locus of (a, e) for which the peak frequency is 10−3 to 1 − 10 Hz. Bottom panel: same as top panel, but the binary has a mass MBHB = 79 M, eccentricity e = 0.947, and semi-major axis a = 0.014, 0.14, or 1.4 AU.

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