論文

査読有り
2018年8月

Stunted accretion growth of black holes by combined effect of the flow angular momentum and radiation feedback

Monthly Notices of the Royal Astronomical Society
  • Sugimura, Kazuyuki
  • ,
  • Hosokawa, Takashi
  • ,
  • Yajima, Hidenobu
  • ,
  • Inayoshi, Kohei
  • ,
  • Omukai, Kazuyuki

478
3
開始ページ
3961
終了ページ
3975
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1093/mnras/sty1298
出版者・発行元
OXFORD UNIV PRESS

Accretion on to seed black holes (BHs) is believed to play a crucial role in formation of supermassive BHs observed at high-redshift (z > 6). Here, we investigate the combined effect of gas angular momentum and radiation feedback on the accretion flow, by performing 2D axially symmetric radiation hydrodynamics simulations that solve the flow structure across the Bondi radius and the outer part of the accretion disc simultaneously. The accreting gas with finite angular momentum forms a rotationally supported disc inside the Bondi radius, where the accretion proceeds by the angular momentum transport due to assumed α-type viscosity. We find that the interplay of radiation and angular momentum significantly suppresses accretion even if the radiative feedback is weakened in an equatorial shadowing region. The accretion rate is O(α) ̃ O(0.01 - 0.1) times the Bondi value, where α is the viscosity parameter. By developing an analytical model, we show that such a great reduction of the accretion rate persists unless the angular momentum is so small that the corresponding centrifugal radius is ≲ 0.04 times the Bondi radius. We argue that BHs are hard to grow quickly via rapid mass accretion considering the angular momentum barrier presented in this paper....

リンク情報
DOI
https://doi.org/10.1093/mnras/sty1298
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000441282300081&DestApp=WOS_CPL
URL
http://orcid.org/0000-0003-3127-5982
ID情報
  • DOI : 10.1093/mnras/sty1298
  • ISSN : 0035-8711
  • eISSN : 1365-2966
  • ORCIDのPut Code : 48853811
  • Web of Science ID : WOS:000441282300081
  • BibTex Code : 2018MNRAS.478.3961S

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