1. Научная деятельность
  2. Публикации
  3. Estimation of the parameters of small meteoroids: A porous body model

Estimation of the parameters of small meteoroids: A porous body model

  • Автор: V. Efremov, O. Popova, D. Glazachev, A. Kartashova, A. Margonis, J. Oberst
  • Издательство: Planetary and Space Science

  An ablation model is used to describe the interaction of small meteoroids with the Earth's atmosphere. In this model, the mass loss of a meteoroid is determined using the saturated vapor pressure of the assumed meteoroid substance. The meteoroid is considered in two modifications as a solid and a porous object. An automated method for estimating the parameters of meteoroids (mass, size, and density) from light curves is developed based on the model of small meteor body ablation, which has been used to estimate the parameters of the Perseid meteors with a brightness of -2m to +2m. The influence of the dependence of the structure (solid/porous) on the parameters of the meteoric body is considered. The estimates of the mass of meteoroids using different model modifications are close to each other (the deviation is no more than 25%) and they coincide with the photometric mass of the meteoroid. The average porosity for all meteoroids is 72% and 84% depending on the model, which is close to the values for IDP. The density of meteoroids is determined with a large error. 

V. Efremov, O. Popova, D. Glazachev, A. Kartashova, A. Margonis, J. Oberst Estimation of the parameters of small meteoroids: A porous body model // Planetary and Space Science, Volume 237, 2023, 105769 https://doi.org/10.1016/j.pss.2023.105769