Characterization of the Meteoroid Spatial Flux Density during the 1999 Leonid Storm |
| |
| Authors: | Peter S Gural Peter Jenniskens |
| |
| Institution: | (1) SAIC, 14668 Lee Road, Chantilly, VA 20151, USA;(2) Carl Sagan Center, SETI Institute, 515 N. Whisman Road, Mountain View, CA 94043, USA |
| |
| Abstract: | The November 18, 1999 Leonid storm was rich in meteors and well observed by airborne intensified video cameras aimed low in
the sky which enabled enhanced meteor counts over ground-based observations. The two- and three-dimensional distribution of
meteoroids was investigated for signs of clustering that could provide evidence of meteoroid fragmentation shortly after lift-off
from the parent comet 55P/Tempel-Tuttle, or much later due to space weathering. Analysis of the video tapes yields a refined
estimation of the mass ratio during the peak of s = 1.65 and spatial flux density of 0.5 particles/km2 greater than those causing visual magnitude +6.5 during the 5 min centered around the peak of the storm. Furthermore, the
projection of the individual trails into three-dimensional Heliocentric coordinates, shows non-homogeneity of the stream on
spatial scales from hundreds to thousands of kilometers. |
| |
| Keywords: | Meteor shower Meteoroid stream Dust trail Comet Comet dust ejection Dust fragmentation Space weathering |
| 本文献已被 SpringerLink 等数据库收录！ |
|
