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The Evolution of Accreting Binaries: From Brown Dwarfs to Supermassive Black Holes

  • Authors: Alexander J. Dittmann, Geoffrey Ryan

Alexander J. Dittmann and Geoffrey Ryan 2024 The Astrophysical Journal 967 .

  • Provider: AAS Journals

Caption: Figure 4.

Values of ﹩{\dot{M}}_{2}/{\dot{M}}_{1}﹩, ﹩{\dot{J}}_{g}/\dot{M}﹩, and ﹩\dot{J}/\dot{M}﹩ from q = 0.01 to q = 1 with ﹩{ \mathcal M }=10﹩ and disks with viscosities ν = 0.001, ν = 0.0005, and α = 0.1, averaged in time over the last 500 orbits of each simulation. At all mass ratios below 1, we find that binaries accreting from α -viscous disks accrete more preferentially onto the secondary than those accreting from constant-ν disks. Depending on the viscosity prescription, binaries at intermediate mass ratios, 0.05 ≲ q ≲ 0.2, experience negative gravitational torques, which we discuss further in Section 3.2.2. Numerical values are provided in Table 4.

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