TY  - JOUR
A1  - Makuch, Martin
A1  - Brilliantov, Nikolai V.
A1  - Sremcevic, Miodrag
A1  - Spahn, Frank
A1  - Krivov, Alexander V.
T1  - Stochastic circumplanetary dynamics of rotating non-spherical dust particles
JF  - Planetary and space science
N2  - We develop a model of stochastic radiation pressure for rotating non-spherical particles and apply the model to circumplanetary dynamics of dust grains. The stochastic properties of the radiation pressure are related to the ensemble-averaged characteristics of the rotating particles, which are given in terms of the rotational time-correlation function of a grain. We investigate the model analytically and show that an ensemble of particle trajectories demonstrates a diffusion-like behaviour. The analytical results are compared with numerical simulations, performed for the motion of the dusty ejecta from Deimos in orbit around Mars. We find that the theoretical predictions are in a good agreement with the simulation results. The agreement however deteriorates at later time, when the impact of non-linear terms, neglected in the analytic approach, becomes significant. Our results indicate that the stochastic modulation of the radiation pressure can play an important role in the circumplanetary dynamics of dust and may in case of some dusty systems noticeably alter an optical depth. (c) 2006 Elsevier Ltd. All rights reserved.
KW  - Mars
KW  - Deimos
KW  - ejecta
KW  - stochastics
KW  - radiation pressure
Y1  - 2006
U6  - https://doi.org/10.1016/j.pss.2006.05.006
SN  - 0032-0633
VL  - 54
IS  - 9-10
SP  - 855
EP  - 870
PB  - Elsevier
CY  - Oxford
ER  -