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Eddington capture sphere around luminous relativistic stars

Published online by Cambridge University Press:  07 March 2016

Maciek Wielgus
Maciek Wielgus*
Affiliation:
Nicolaus Copernicus Astronomical Center, PL-00-716, Warszawa, Poland email: maciek.wielgus@gmail.com
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Abstract

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We discuss the interplay of gravity and radiation in a static, spherically symmetric spacetime. Because of the spacetime curvature, balance between radiation pressure from spherical star and effective force of gravity may be established in a particular distance from the star surface, on so-called Eddington capture sphere. This is in contrast with the Newtonian scenario, for which Eddington luminosity of the radiation assures gravity-radiation balance at any radius. We explore properties of this relativistic equilibrium and the dynamics of test particles under radiation influence in the strong gravity regime.

Keywords

Test particleradiationgeneral relativityneutron stars

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