Modeling the dynamical and photometric behavior of faint meteors in the Earth's atmosphere
Abstract
Faint meteors observed with SuperSchmidt cameras are reexamined in order to assess whether their dynamical and photometric behavior can be described by means of the single body theory. Velocities, decelerations and magnitudes are fitted simultaneously to synthetic curves resulting from integration of the appropriate set of differential equations. The parameters determined by this procedure are the ablation coefficient, the shapedensity coefficient and the preatmospheric mass of the meteoroids. It turns out that 64% of the meteors analyzed here are reasonably well described by this theory, suggesting that they did not undergo significant fragmentation during their atmospheric flight. We identify some systematic differences between observed and theoretical light curves of meteors for which the fit is good. From the retrieved shapedensity coefficients we derive meteoroid bulk densities. The average density turns out to be 1.0 g cm^{3}, with individual values ranging from 0.2 g cm^{3} to 1.4 g cm^{3}. This work represent a first step toward the analysis of lowlight level video observations of very small meteoroids.
 Publication:

Meteoroids 2001 Conference
 Pub Date:
 November 2001
 Bibcode:
 2001ESASP.495..525B
 Keywords:

 Meteoroids;
 Light Curves;
 Densities;
 Numerical Modeling;
 light curves;
 densities;
 numerical modeling