Vertical Structure of Radiation-pressure-dominated Thin Disks: Link between Vertical Advection and Convective Stability
Gong, Hong-Yu1,2; Gu, Wei-Min1; Gu, Wei-Min(Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China)
发表期刊ASTROPHYSICAL JOURNAL
2017-04-20
卷号839期号:2
DOI10.3847/1538-4357/aa6976
收录类别SCI
关键词Black Hole Physics Convection Instabilities Accretion Accretion Disks
摘要In the classic picture of standard thin accretion disks, viscous heating is balanced by radiative cooling through the diffusion process, and the radiation-pressure-dominated inner disk suffers convective instability. However, recent simulations have shown that, owing to the magnetic buoyancy, the vertical advection process can significantly contribute to energy transport. In addition, in comparing the simulation results with the local convective stability criterion, no convective instability has been found. In this work, following on from simulations, we revisit the vertical structure of radiation-pressure-dominated thin disks and include the vertical advection process. Our study indicates a link between the additional energy transport and the convectively stable property. Thus, the vertical advection not only significantly contributes to the energy transport, but it also plays an important role in making the disk convectively stable. Our analyses may help to explain the discrepancy between classic theory and simulations on standard thin disks.
项目资助者National Basic Research Program of China (973 Program)(2014CB845800) ; National Natural Science Foundation of China(11573023, 11333004, 11222328) ; CAS Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects(OP201503)
语种英语
学科领域天文学
文章类型Article
ISSN0004-637X
URL查看原文
WOS记录号WOS:000399876200013
WOS研究方向Astronomy & Astrophysics
WOS类目Astronomy & Astrophysics
关键词[WOS]ACCRETION DISKS ; BLACK-HOLES ; LUMINOSITIES
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文献类型期刊论文
条目标识符http://ir.ynao.ac.cn/handle/114a53/10173
专题中国科学院天体结构与演化重点实验室
通讯作者Gu, Wei-Min(Xiamen Univ, Dept Astron, Xiamen 361005, Fujian, Peoples R China)
作者单位1.Department of Astronomy, Xiamen University, Xiamen, Fujian 361005, China
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, China
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Gong, Hong-Yu,Gu, Wei-Min,Gu, Wei-Min. Vertical Structure of Radiation-pressure-dominated Thin Disks: Link between Vertical Advection and Convective Stability[J]. ASTROPHYSICAL JOURNAL,2017,839(2).
APA Gong, Hong-Yu,Gu, Wei-Min,&Gu, Wei-Min.(2017).Vertical Structure of Radiation-pressure-dominated Thin Disks: Link between Vertical Advection and Convective Stability.ASTROPHYSICAL JOURNAL,839(2).
MLA Gong, Hong-Yu,et al."Vertical Structure of Radiation-pressure-dominated Thin Disks: Link between Vertical Advection and Convective Stability".ASTROPHYSICAL JOURNAL 839.2(2017).
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