Gimeno, JoanJorba, ÀngelJorba Cuscó, MarcNicolás Ávila, Begoña2024-09-302024-09-302024Gimeno, J., Jorba, À., Jorba-Cuscó, M. et al. On the effect of the sun on Kordylewski clouds. Celest Mech Dyn Astron 136, 23 (2024). https://doi.org/10.1007/s10569-024-10188-10923-2958http://hdl.handle.net/10347/34946In this paper, we focus on the existence of dust clouds moving near the triangular points of the Earth–Moon system, the so-called Kordylewski clouds. The study is based on using some simplified planar models to find possible locations for these clouds. The validity of these predictions is tested by means of numerical simulations on a realistic model. The simplified models are based on the Earth–Moon restricted three-body problem plus the direct gravitational effect of the Sun on the particles (this is the so-called bicircular model), the solar radiation pressure and the Poynting–Robertson effect. The analysis of these models shows that there are some stability regions in the Earth–Moon plane, at some distance of the triangular points. The stability of these regions has been tested numerically in realistic (nonplanar) models. The results show that particles in these regions persist for some time (about a century), but it is very remarkable that many of these particles also escape the Earth–Moon system. If we perform backwards in time numerical simulations we obtain a similar result: particles also escape the Earth–Moon system after a similar time. From this point of view, the clouds are not a stable region in the classical sense of the term, but a region with “slow diffusion” where interplanetary particles stay for some years.engAtribución 4.0 Internacional© The Author(s) 2024. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.http://creativecommons.org/licenses/by/4.0/Kordylewski cloudSolar radiation pressurePoynting–Robertson effectBicircular problemjournal article10.1007/s10569-024-10188-11572-9478open access