Yarkovsky-O'Keefe-Radzievskii-Paddack effect with anisotropic radiation

Astronomy and Astrophysics – Astronomy

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Radiation Mechanisms: Thermal, Methods: Numerical, Celestial Mechanics, Minor Planets, Asteroids: General

Scientific paper

In this paper, we study the influence of optical scattering and thermal radiation models on the Yarkovsky-O'Keefe-Radzievskii-Paddack (YORP) effect. The Lambertian formulation is compared with the scattering and emission laws and Lommel-Seeliger reflection. Although the form of the reflectivity function strongly influences the mean torques because of scattering or thermal radiation alone, their combined contribution to the rotation period YORP effect is not very different from the standard Lambertian values. For higher albedo values, the differences between the Hapke and Lambert models become significant for the YORP effect in attitude.

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