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- W3105467979 abstract "Using two-dimensional simulations, we compute the torque and rate of work (power) on a low-mass gravitational body, with softening length Rsoft, embedded in a gaseous disk when its orbit is eccentric and retrograde with respect to the disk. We explore orbital eccentricities e between 0 and 0.6. We find that the power has its maximum at e ≃ 0.25(h/0.05)2/3, where h is the aspect ratio of the disk. We show that the power and the torque converge to the values predicted in the local (nonresonant) approximation of the dynamical friction (DF) when Rsoft tends to zero. For retrograde inspirals with mass ratios ≲5 × 10−4 embedded in disks with h ≥ 0.025, our simulations suggest that (i) the rate of inspiral barely depends on the orbital eccentricity and (ii) the local approximation provides the value of this inspiral rate within a factor of 1.5. The implications of the results for the orbital evolution of extreme mass ratio inspirals are discussed." @default.
- W3105467979 created "2020-11-23" @default.
- W3105467979 creator A5023719025 @default.
- W3105467979 date "2020-07-13" @default.
- W3105467979 modified "2023-10-14" @default.
- W3105467979 title "Orbital Evolution of Gas-driven Inspirals with Extreme Mass Ratios: Retrograde Eccentric Orbits" @default.
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- W3105467979 doi "https://doi.org/10.3847/1538-4357/ab9b2d" @default.
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