Spinning up black holes with super-critical accretion flows

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F11%3A%230003876" target="_blank" >RIV/47813059:19240/11:#0003876 - isvavai.cz</a>
Alternative codes found
RIV/67985815:_____/11:00372045
Result on the web
<a href="http://dx.doi.org/10.1051/0004-6361/201116702" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201116702</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201116702" target="_blank" >10.1051/0004-6361/201116702</a>

Result language
angličtina
Original language name
Spinning up black holes with super-critical accretion flows
Original language description
We study the process of spinning up black holes by accretion from slim disks in a wide range of accretion rates. We show that for super-Eddington accretion rates and low values of the viscosity parameter alpha (lesssim 0.01) the limiting value of the dimensionless spin parameter a_* can reach values higher than a_*=0.9978 inferred by Thorne (1974) in his seminal study. For mdot=10mdot_{Edd} and alpha=0.01 spin equilibrium is reached at a_*=0.9994. We show that the equilibrium spin value depends strongly on the assumed value of alpha. We also prove that for high accretion rates the impact of captured radiation on spin evolution is negligible.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BE - Theoretical physics
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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