Eddington capture sphere around luminous stars

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F12%3A%230004527" target="_blank" >RIV/47813059:19240/12:#0004527 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201220187&Itemid=129" target="_blank" >http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201220187&Itemid=129</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201220187" target="_blank" >10.1051/0004-6361/201220187</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Eddington capture sphere around luminous stars

Popis výsledku v původním jazyce

Test particles infalling from infinity onto a compact spherical star with a mildly super-Eddington luminosity at its surface are typically trapped on the "Eddington capture sphere" and do not reach the surface of the star. The presence of a sphere on which radiation pressure balances gravity for static particles was first discovered some twenty five years ago. Subsequently, it was shown to be a capture sphere for particles in radial motion, and more recently also for particles in non-radial motion, in which the Poynting-Robertson radiation drag efficiently removes the orbital angular momentum of the particles, reducing it to zero. Here we develop this idea further, showing that "levitation" on the Eddington sphere (above the stellar surface) is a stateof stable equilibrium, and discuss its implications for Hoyle-Lyttleton accretion onto a luminous star. When the Eddington sphere is present, the cross-section of a compact star for actual accretion is typically less than the geometrical

Název v anglickém jazyce

Eddington capture sphere around luminous stars

Popis výsledku anglicky

Test particles infalling from infinity onto a compact spherical star with a mildly super-Eddington luminosity at its surface are typically trapped on the "Eddington capture sphere" and do not reach the surface of the star. The presence of a sphere on which radiation pressure balances gravity for static particles was first discovered some twenty five years ago. Subsequently, it was shown to be a capture sphere for particles in radial motion, and more recently also for particles in non-radial motion, in which the Poynting-Robertson radiation drag efficiently removes the orbital angular momentum of the particles, reducing it to zero. Here we develop this idea further, showing that "levitation" on the Eddington sphere (above the stellar surface) is a stateof stable equilibrium, and discuss its implications for Hoyle-Lyttleton accretion onto a luminous star. When the Eddington sphere is present, the cross-section of a compact star for actual accretion is typically less than the geometrical

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BN - Astronomie a nebeská mechanika, astrofyzika

OECD FORD obor

—

Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

—

Svazek periodika

546

Číslo periodika v rámci svazku

OCT 2012

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

5

Strana od-do

—

Kód UT WoS článku

000310349100054

EID výsledku v databázi Scopus

—