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Vertical Structure of Radiation-pressure-dominated Thin Disks: Link between Vertical Advection and Convective Stability
Gong, Hong-Yu1,2; Gu, Wei-Min1
Source PublicationASTROPHYSICAL JOURNAL
2017-04-20
Volume839Issue:2
DOI10.3847/1538-4357/aa6976
Indexed BySCI
Keyword:accretion, accretion disks black hole physics convection instabilities
Abstract

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.

Funding ProjectNational Basic Research Program of China (973 Program)[2014CB845800] ; National Natural Science Foundation of China[11573023] ; National Natural Science Foundation of China[11333004] ; National Natural Science Foundation of China[11222328] ; CAS Open Research Program of Key Laboratory for the Structure and Evolution of Celestial Objects[OP201503]
Funding OrganizationNational 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]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN0004-637X
URL查看原文
WOS IDWOS:000399876200013
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordACCRETION DISKS ; BLACK-HOLES ; LUMINOSITIES
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10173
Collection中国科学院天体结构与演化重点实验室
Corresponding AuthorGu, Wei-Min
Affiliation1.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
Recommended Citation
GB/T 7714
Gong, Hong-Yu,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.(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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