Volume 97, Number 4, February 2012
|Number of page(s)||6|
|Published online||21 February 2012|
Radiation pressure vs. friction effects in the description of the Poynting-Robertson scattering process
Istituto per le Applicazioni del Calcolo “M. Picone,” CNR - I-00185 Roma, Italy, EU
2 University of Rome I “La Sapienza” - I-00185 Roma, Italy, EU
3 ICRA, University of Rome I “La Sapienza,” - I-00185 Roma, Italy, EU
Accepted: 23 January 2012
The motion of a massive test particle inside a thermal (test) photon gas is studied near a Schwarzschild black hole, leading to a novel description of the effect of radiation scattering on the particle trajectory, responsible for half of the Poynting-Robertson effect: the azimuthal radiation drag. Lacking the outward directed radiation pressure of the latter effect, gravitationally bound orbits always decay, leading to capture by the black hole or the central object generating the exterior Schwarzschild field in which this discussion takes place.
PACS: 04.20.Cv – Fundamental problems and general formalism
© EPLA, 2012
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