HEAT MODELS OF ASTEROIDS AND THE YORP EFFECT

Автор(и)

  • O. Golubov Institute of Astronomy of V. N. Karazin Kharkiv National University, Ukraine

DOI:

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

Ключові слова:

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

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 

Посилання

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Golubov A.A. & Krugly Yu.N.: 2010, Protecting the Earth against Collisions with Asteroids and Comet Nuclei, St. Petersburg, 90.

Rubincam D.P.: 2000, Icarus, 148, 2.

Steinberg E. & Sari R.: 2011, AJ, 141, 55.

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Опубліковано

2014-10-28

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