我们研究了低电离原行星盘中自持MRI湍流的特性。我们研究了活动区和死区之间的过渡区，进行三维整体非理想磁流体力学模拟的分层磁盘覆盖范围内的磁雷诺数在2700之间的Rm 5000< 6600. We found converged and saturated MRI turbulence for Rm >与强度的α ~ 0.01。低于Rm < 5000时，MRI在中平面开始衰减，Elsasser数低于1。我们发现在3300 < Rm < 5000之间的过渡区，其中MRI湍流仍然持续但被阻尼。在大约Rm < 3000时，MRI湍流衰减，但由于环形磁场的累积或来自活动区域的磁场的径向传输，可以重新建立。在Rm < 3000以下，MRI不能持续并且正在衰减。这里流体动力学运动，如密度波占主导地位。在死区和活动区之间的过渡区，我们观察到反气旋性涡旋。
英文摘要：
We investigate the characteristic properties of self-sustained MRI turbulence in low-ionized proto-planetary disks. We study the transition regime between active and dead-zone, performing 3D global non-ideal MHD simulations of stratified disk covering range of magnetic Reynolds number between 2700 < Rm < 6600. We found converged and saturated MRI turbulence for Rm > 5000 with a strength of alpha ~ 0.01. Below Rm < 5000 the MRI starts to decay at the midplane, having Elsasser numbers below one. We find a transition regime between 3300 < Rm < 5000 where the MRI turbulence is still sustained but damped. At around Rm < 3000 the MRI turbulence decays but could reestablished due to the accumulation of toroidal magnetic field or the radial transport of magnetic field from the active region. Below Rm < 3000 the MRI cannot be sustained and is decaying. Here hydro-dynamical motions, like density waves dominate. We observe anti-cyclonic vortices in the transition between dead-zone and active zone.
FastChem: A computer program for efficient complex chemical equilibrium calculations in the neutral/ionized gas phase with applications to stellar and planetary atmospheres
Resonant Excitation of Planetary Eccentricity due to a Dispersing Eccentric Protoplanetary Disk: A New Mechanism of Generating Large Planetary Eccentricities
Streaming instabilities in weakly ionized protoplanetary discs: the Ambipolar Streaming Instability (AmSI)
Laboratoire d’astrophysique de Bordeaux, Univ. Bordeaux, CNRS（波尔多天体物理实验室，波尔多大学，法国国家科学研究中心）；Institute of Astronomy and Astrophysics, Academia Sinica（中央研究院天文及天文物理研究所）；Physics Division, National Center for Theoretical Sciences（国家理论科学中心物理组）
Ionized gas emission in protoplanetary disks with the SKAO
Univ. Grenoble Alpes, CNRS, IPAG（格勒诺布尔阿尔卑斯大学，法国国家科学研究中心，天体物理学与行星学研究所）；School of Physics and Astronomy, University of Leeds（利兹大学物理与天文学学院）；Shanghai Astronomical Observatory, Chinese Academy of Sciences（中国科学院上海天文台）；School of Physics and Astronomy, University of Leicester（莱斯特大学物理与天文学学院）
