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- W2014497218 abstract "When a gravitating object moves across a given mass distribution, it creates an overdense wake behind it. Here, we performed an analytical study of the structure of the flow far from object when the flow is isentropic and the object moves subsonically within it. We show that the dynamical friction force is the main drag force on the object and by using a perturbation theory, we obtain the density, velocity and pressure of the perturbed flow far from the mass. We derive the expression of the dynamical friction force in an isentropic flow and show its dependence on the Mach number of the flow and on the adiabatic index. We find that the dynamical friction force becomes lower as the adiabatic index increases. We show analytically that the wakes are less dense in our isentropic case in comparison to the isothermal ones." @default.
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- W2014497218 date "2012-03-28" @default.
- W2014497218 modified "2023-10-17" @default.
- W2014497218 title "Dynamical friction in an isentropic gas" @default.
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- W2014497218 doi "https://doi.org/10.1007/s10509-012-1041-6" @default.
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