HEAT MODELS OF ASTEROIDS AND THE YORP EFFECT

O. Golubov

Анотація


The  Yarkovsky–O'Keefe–Radzievski–Paddack (YORP) effect is a torque of light pressure recoil forces acting on an asteroid. We show how this torque can be expressed as an integral of a universal function over the surface of an asteroid, and discuss generalizations of this expression for the case of non-Lambert’s  scattering  laws, non-convex shapes of asteroids, and non-zero  heat  conductivity. Then we discuss tangential YORP (TYORP), which appears due to uneven heat conductivity in stones lying on the surface of an asteroid. TYORP manifests  itself as a drag, which pulls  the  surface  in  the tangential direction. Finally, we discuss relation and interplay between the normal YORP and the tangential YORP.

 

Asteroids; dynamics – Galaxy; abundances; stars; late-type 


Ключові слова


Asteroids: dynamics – Galaxy: abundances – stars: late-type

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Посилання


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DOI: https://doi.org/10.18524/1810-4215.2014.27.81467

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