Stochastic circumplanetary dynamics of rotating non-spherical dust particles

Martin Makuch, Nikolai V. Brilliantov, Miodrag Sremčević, Frank Spahn, Alexander V. Krivov

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)855-870
Number of pages16
JournalPlanetary and Space Science
Volume54
Issue number9-10
DOIs
Publication statusPublished - Aug 2006
Externally publishedYes

Keywords

  • Deimos
  • Ejecta
  • Mars
  • Radiation pressure
  • Stochastics

Fingerprint

Dive into the research topics of 'Stochastic circumplanetary dynamics of rotating non-spherical dust particles'. Together they form a unique fingerprint.

Cite this