| Rossby wave instability in 3D discs | |
Meheut, H1; Yu C(余聪)2,3,4 ; Lai, D2; Meheut, H (reprint author), Univ Bern, Inst Phys, CH-3012 Bern, Switzerland.
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| 发表期刊 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 2012-05 | |
| 卷号 | 422期号:3页码:2399-2406 |
| DOI | 10.1111/j.1365-2966.2012.20789.x |
| 产权排序 | 第3完成单位 |
| 收录类别 | SCI |
| 关键词 | Accretion Accretion Discs Hydrodynamics Instabilities Planets And Satellites: Formation Protoplanetary Discs |
| 摘要 | The Rossby wave instability (RWI) is a promising mechanism for producing large-scale vortices in protoplanetary discs. The instability operates around a density bump in the disc, and the resulting vortices may facilitate planetesimal formation and angular momentum transfer in the disc dead zone. Most previous works on the RWI deal with 2D (height-integrated) discs. However, vortices in 3D may have different dynamical behaviours from those in 2D. Recent numerical simulations of the RWI in 3D global discs by Meheut et al. have revealed intriguing vertical structure of the vortices, including appreciable vertical velocities. In this paper we present a linear analysis of the RWI, in 3D global models of isothermal discs. We calculate the growth rates of the Rossby modes (of various azimuthal wave numbers m= 26) trapped around the fiducial density bump and carry out 3D numerical simulations to compare with our linear results. We show that the 3D RWI growth rates are only slightly smaller than the 2D growth rates, and the velocity structures seen in the numerical simulations during the linear phase are in agreement with the velocity eigenfunctions obtained in our linear calculations. This numerical benchmark shows that numerical simulations can accurately describe the instability. The angular momentum transfer rate associated with Rossby vortices is also studied. |
| 项目资助者 | Swiss National Science Foundation ; National Natural Science Foundation of China [10703012, 11173057, 11033008] ; CAS ; [AST-1008245] |
| 语种 | 英语 |
| 学科领域 | Astronomy & Astrophysics |
| 文章类型 | Article |
| ISSN | 0035-8711 |
| URL | 查看原文 |
| WOS记录号 | WOS:000303858400044 |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 关键词[WOS] | THIN ACCRETION DISKS ; PROTOPLANETARY DISKS ; 3-DIMENSIONAL VORTICES ; PLANET INTERACTIONS ; G-MODE ; OSCILLATIONS ; SIMULATIONS ; STABILITY ; COROTATION ; EXCITATION |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.ynao.ac.cn/handle/114a53/4536 |
| 专题 | 大样本恒星演化研究组 中国科学院天体结构与演化重点实验室 |
| 通讯作者 | Meheut, H (reprint author), Univ Bern, Inst Phys, CH-3012 Bern, Switzerland. |
| 作者单位 | 1.Physikalisches Institut & Center for Space and Habitability, Universität Bern, 3012 Bern, Switzerland 2.Department of Astronomy, Cornell University, Ithaca, NY 14853, USA 3.National Astronomical Observatories/Yunnan Astronomical Observatory, Chinese Academy of Sciences, Kunming 650011, China 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China |
| 推荐引用方式 GB/T 7714 | Meheut, H,Yu C,Lai, D,et al. Rossby wave instability in 3D discs[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2012,422(3):2399-2406. |
| APA | Meheut, H,Yu C,Lai, D,&Meheut, H .(2012).Rossby wave instability in 3D discs.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,422(3),2399-2406. |
| MLA | Meheut, H,et al."Rossby wave instability in 3D discs".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 422.3(2012):2399-2406. |
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| Rossby wave instabil（3264KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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