Poynting-Robertson effect for a spherical source of radiation

Abstract

view Abstract Citations (31) References (6) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Poynting-Robertson effect for a spherical source of radiation Guess, A. W. Abstract This paper considers the effects of radiation forces on a small material particle which is gravitationally orbiting a finite spherical source of radiation The radiation forces are computed exactly, and the orbital equations and time of fall into the source are solved to the first order. When the particle is close to the sphere, all radiation drag effects increase above those for a point source. In a first-order relativistic theory, the angular and radial drag forces become equal at the surface of the sphere, and are eight-thirds and four-thirds times their point-source values, respectively. The orbital equations give secular decreases in angular momentum, eccentricity, and semimajor axis in terms of complete elliptic integrals of the first, second, and third kinds When the particle is far from the sphere, all expressions reduce to Robertson's values for a point source. Publication: The Astrophysical Journal Pub Date: May 1962 DOI: 10.1086/147329 Bibcode: 1962ApJ...135..855G full text sources ADS |