Detailed Information on Publication Record
2012
Eddington capture sphere around luminous stars
ABRAMOWICZ, Marek and A. STAHBasic information
Original name
Eddington capture sphere around luminous stars
Authors
ABRAMOWICZ, Marek and A. STAH
Edition
Astronomy & Astrophysics, FR - Francouzská republika, 2012, 0004-6361
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Organization unit
Faculty of Philosophy and Science in Opava
UT WoS
000310349100054
Keywords in English
Accretion; Accretion disks; Stars: neutron; Radiation mechanisms: general; Relativistic processes
Tags
Tags
International impact, Reviewed
Links
MSM4781305903, plan (intention).
Změněno: 8/12/2020 12:20, Mgr. Pavlína Jalůvková
Abstract
V originále
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