Statistics – Computation
Scientific paper
Mar 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993icar..102..150k&link_type=abstract
Icarus (ISSN 0019-1035), vol. 102, no. 1, p. 150-165.
Statistics
Computation
59
Accretion Disks, Computational Astrophysics, Gas Dynamics, Linear Systems, Planetary Evolution, Planetary Orbits, Protoplanets, Nebulae, Pressure Effects, Pressure Gradients, Planets, Protoplanets, Numerical Methods, Disk, Calculations, Waves, Gradients, Parameters, Density, Torque, Comparisons, Outer Planets, Theoretical Studies, Corotation, Perturbations, Pressure, Solar Nebula, Resonance, Evolution, Orbits, Timescale, Earth, Distance, Boundaries
Scientific paper
Numerical calculations of the linear response of a 2D gaseous disk to the perturbations induced by a protoplanet and the corresponding torque are presented. When the pressure gradient is taken into account, torques are increased in disks with gradients in either surface density and sound speed, the effect of the latter being much greater for the same-sized gradient as measured by the power law index. The torques in turn may be used to calculate timescales for orbital migration of protoplanets.
Korycansky Donald G.
Pollack James B.
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