Oscillations of the Eddington capture sphere
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F12%3A%230004528" target="_blank" >RIV/47813059:19240/12:#0004528 - isvavai.cz</a>
Result on the web
<a href="http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201220228&Itemid=129" target="_blank" >http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201220228&Itemid=129</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201220228" target="_blank" >10.1051/0004-6361/201220228</a>
Alternative languages
Result language
angličtina
Original language name
Oscillations of the Eddington capture sphere
Original language description
We present a toy model of mildly super-Eddington, optically thin accretion onto a compact star in the Schwarzschild metric, which predicts periodic variations of luminosity when matter is supplied to the system at a constant accretion rate. These are related to the periodic appearance and disappearance of the Eddington capture sphere. In the model the frequency is found to vary inversely with the luminosity. If the input accretion rate varies (strictly) periodically, the luminosity variation is quasi-periodic, and the quality factor is inversely proportional to the relative amplitude of mass accretion fluctuations, with its largest value Q approximate to 1/(10|delta(M)over dot/(M)over dot|) attained in oscillations at about 1 to 2 kHz frequencies for a2 M-circle dot star.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
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Volume of the periodical
545
Issue of the periodical within the volume
SEP 2012
Country of publishing house
FR - FRANCE
Number of pages
3
Pages from-to
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UT code for WoS article
000309254900123
EID of the result in the Scopus database
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