论文标题
在不同尺度上流式不稳定性。 I.行星质量分布变异性
Streaming instability on different scales. I. Planetesimal mass distribution variability
论文作者
论文摘要
我们介绍了由自我重度流媒体不稳定性引发的尘埃结块和行星形成的数值模拟。我们通过采用具有较大径向和方位角的模拟域以及重新运行其他相同模拟的新方法来检查地球形成过程中的可变性，并在灰尘密度场上进行不同的随机初始化，我们发现行星质量分布以及在单个小型域中的尘埃质量较大，并且在较大的小型域之间进行了较大的尘埃质量。我们的结果表明，发达的流型不稳定性的非线性性质在没有以前尚未考虑的行星形成过程中引入了实质性可变性，并建议更大的规模动态可能会影响该过程。
We present numerical simulations of dust clumping and planetesimal formation initiated by the streaming instability with self-gravity. We examine the variability in the planetesimal formation process by employing simulation domains with large radial and azimuthal extents and a novel approach of re-running otherwise identical simulations with different random initializations of the dust density field.We find that the planetesimal mass distribution and the total mass of dust that is converted to planetesimals can vary substantially between individual small simulations and within the domains of larger simulations. Our results show that the non-linear nature of the developed streaming instability introduces substantial variability in the planetesimal formation process that has not been previously considered and suggests larger scale dynamics may affect the process.
