Changes between Version 3 and Version 4 of u/adebrech
- Timestamp:
- 02/29/16 12:24:10 (9 years ago)
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u/adebrech
v3 v4 1 1 [[BackLinksMenu()]] 2 2 [[PageOutline]] 3 4 = Stone-Proga paper = 5 Paper is a comparison of 2D simulations (of close-in hot Jupiters) to spherically symmetric simulations run by others. They characterize escape from the planet with the hydrodynamic escape parameter (lambda), ratio of gravitational potential to thermal potential - a small lambda suggests a thermal wind. They use no magnetism (hydrodynamic rather than MHD), and ignore heating and small-scale effects at the base of the wind. The wind is made self-consistent by fixing the density and energy at the base. 6 7 In models with no stellar wind and an isothermal outflow, they find that the sonic surface of the wind is closer to the planet, with a slower radial velocity on the night side of the planet, and a very evident shock in the |v|/v,,s,, plot at various angles. For larger values of gamma, this shock produces a delta T, and the sonic surface is farther from the planet (but still nearer than in the spherically symmetric models). Introducing a stellar wind creates a back-swept profile, but has little effect on the sonic surfaces or mass-loss rate. 8 3 9 4 10 = Experimenting with AstroBEAR =