Global Simulations of the Vertical Shear Instability with Nonideal Magnetohydrodynamic Effects
文献类型：期刊论文
| 作者 | Cui, Can2; Bai, Xue-Ning1,3 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 2020-03-01 |
| 卷号 | 891期号:1页码:18 |
| ISSN号 | 0004-637X |
| 关键词 | Protoplanetary disks Magnetohydrodynamics Astrophysical fluid dynamics |
| DOI | 10.3847/1538-4357/ab7194 |
| 英文摘要 | The mechanisms of angular momentum transport and the level of turbulence in protoplanetary disks (PPDs) are crucial for understanding many aspects of planet formation. In recent years, it has been realized that the magneto-rotational instability tends to be suppressed in PPDs due to nonideal magnetohydrodynamic (MHD) effects, and the disk is primarily laminar with accretion driven by magnetized disk winds. In parallel, several hydrodynamic mechanisms have been identified that likely also generate vigorous turbulence and drive disk accretion. In this work, we study the interplay between MHD winds in PPDs with the vertical shear instability (VSI), one of the most promising hydrodynamic mechanisms, through 2D global nonideal MHD simulations with ambipolar diffusion (AD) and ohmic resistivity. For typical disk parameters, MHD winds can coexist with the VSI with accretion primarily wind-driven accompanied by vigorous VSI turbulence. The properties of the VSI remain similar to the unmagnetized case. The wind and overall field configuration are not strongly affected by the VSI turbulence, showing a modest level of variability and corrugation of the midplane current sheet. Weak AD strength or the enhanced coupling between gas and magnetic fields weakens the VSI. The VSI is also weakened with increasing magnetization, and characteristic VSI corrugation modes transition to low-amplitude breathing mode oscillations with strong magnetic fields. |
| WOS关键词 | BAROCLINIC VORTICITY PRODUCTION ; UNSPLIT GODUNOV METHOD ; PROTOPLANETARY DISKS ; ACCRETION DISKS ; AMBIPOLAR DIFFUSION ; MAGNETIZED DISKS ; VORTEX FORMATION ; LINEAR-ANALYSIS ; IDEAL MHD ; TURBULENCE |
| 资助项目 | Natural Science Foundation of China[11573051] ; Natural Science Foundation of China[11633006] ; Natural Science Foundation of China[11650110427] ; Natural Science Foundation of China[11661161012] ; Youth Thousand Talent program |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | IOP PUBLISHING LTD |
| WOS记录号 | WOS:000518937000001 |
| 资助机构 | Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Thousand Talent program ; Youth Thousand Talent program ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Thousand Talent program ; Youth Thousand Talent program ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Thousand Talent program ; Youth Thousand Talent program ; Natural Science Foundation of China ; Natural Science Foundation of China ; Youth Thousand Talent program ; Youth Thousand Talent program |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/56355]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Cui, Can |
| 作者单位 | 1.Tsinghua Univ, Dept Astron, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cui, Can,Bai, Xue-Ning. Global Simulations of the Vertical Shear Instability with Nonideal Magnetohydrodynamic Effects[J]. ASTROPHYSICAL JOURNAL,2020,891(1):18. |
| APA | Cui, Can,&Bai, Xue-Ning.(2020).Global Simulations of the Vertical Shear Instability with Nonideal Magnetohydrodynamic Effects.ASTROPHYSICAL JOURNAL,891(1),18. |
| MLA | Cui, Can,et al."Global Simulations of the Vertical Shear Instability with Nonideal Magnetohydrodynamic Effects".ASTROPHYSICAL JOURNAL 891.1(2020):18. |
入库方式： OAI收割
来源：国家天文台
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