Zobrazeno 1 - 10
of 171
pro vyhledávání: '"Lithwick, Yoram"'
Accretion disks around both stellar-mass and supermassive black holes are likely often warped. Whenever a disk is warped, its scale height varies with azimuth. Sufficiently strong warps cause extreme compressions of the scale height, which fluid parc
Externí odkaz:
http://arxiv.org/abs/2410.00961
The Kepler mission reveals a peculiar trough-peak feature in the orbital spacing of close-in planets near mean-motion resonances: a deficit and an excess that are a couple percent to the narrow, respectively wide, of the resonances. This feature has
Externí odkaz:
http://arxiv.org/abs/2405.08893
Much of a protoplanetary disk is thermally controlled by irradiation from the central star. Such a disk, long thought to have a smoothly flaring shape, is unstable to the so-called 'irradiation instability'. But what's the outcome of such an instabil
Externí odkaz:
http://arxiv.org/abs/2309.16065
We establish the criterion for chaos in three-planet systems, for systems similar to those discovered by the Kepler spacecraft. Our main results are as follows: (i) The simplest criterion, which is based on overlapping mean motion resonances MMR's),
Externí odkaz:
http://arxiv.org/abs/2110.02956
Recent simulations show that giant planets of about one Jupiter mass migrate inward at a rate that differs from the Type II prediction. Here we show that at higher masses, planets migrate outward. Our result differs from previous ones because of our
Externí odkaz:
http://arxiv.org/abs/2105.05277
Autor:
Wu, Yanqin, Lithwick, Yoram
The temperature in most parts of a protoplanetary disk is determined by irradiation from the central star. Numerical experiments of Watanabe \& Lin (2008) suggested that such disks, also called `passive disks', suffer from a thermal instability. Here
Externí odkaz:
http://arxiv.org/abs/2105.02680
Autor:
Muñoz, Diego J., Lithwick, Yoram
Hydrodynamical simulations show that circumbinary disks become eccentric, even when the binary is circular. Here we demonstrate that, in steady state, the disk's eccentricity behaves as a long-lived free mode trapped by turning points that naturally
Externí odkaz:
http://arxiv.org/abs/2008.08085
In simulations of viscously evolving accretion disks, the inner boundary condition is particularly important. If treated incorrectly, it induces incorrect behavior very quickly, because the viscous time is shortest near the inner boundary. Recent wor
Externí odkaz:
http://arxiv.org/abs/2002.05164
We present numerical simulations, using two complementary setups, of rotating Boussinesq thermal convection in a three-dimensional Cartesian geometry with misaligned gravity and rotation vectors. This model represents a small region at a non-polar la
Externí odkaz:
http://arxiv.org/abs/2002.02461
We investigate how planets interact with viscous accretion disks, in the limit that the disk is sufficiently low mass that the planet migrates more slowly than the disk material. In that case, the disk's surface density profile is determined by the d
Externí odkaz:
http://arxiv.org/abs/1908.02326