Leonid storm flux analysis from one Leonid Mac Video AL50R

被引:17
|
作者
Gural, PS
Jenniskens, P
机构
[1] Sci Applicat Int Corp, Arlington, VA 22203 USA
[2] NASA, Ames Res Ctr, SETI Inst, Moffett Field, CA 94035 USA
来源
EARTH MOON AND PLANETS | 1998年 / 82-3卷 / 0期
关键词
clustering; flux; fragmentation; Leonids; 1999; meteor; meteoroid; optimal video pointing; satellite impact hazard; simulation;
D O I
10.1023/A:1017030431743
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
A detailed meteor flux analysis is presented of a seventeen-minute portion of one videotape, collected on November 18, 1999, during the Leonid Multi-instrument Aircraft Campaign. The data was recorded around the peak of the Leonid meteor storm using an intensified CCD camera pointed towards the low southern horizon. Positions of meteors on the sky were measured. These measured meteor distributions were compared to a Monte Carlo simulation, which is a new approach to parameter estimation for mass ratio and flux. Comparison of simulated flux versus observed flux levels, seen between 1:50:00 and 2:06:41 UT, indicate a magnitude population index of r = 1.8 +/- 0.1 and mass ratio of s = 1.64 +/- 0.06. The average spatial density of the material contributing to the Leonid storm peak is measured at 0.82 +/- 0.19 particles per square kilometer per hour for particles of at least absolute visual magnitude +6.5. Clustering analysis of the arrival times of Leonids impacting the earth's atmosphere over the total observing interval shows no enhancement or clumping down to time scales of the video frame rate. This indicates a uniformly random temporal distribution of particles in the stream encountered during the 1999 epoch. Based on the observed distribution of meteors on the sky and the model distribution, recommendations are made for the optimal pointing directions for video camera meteor counts during future ground and airborne missions.
引用
收藏
页码:221 / 247
页数:27
相关论文
共 4 条
  • [1] Leonid Storm Flux Analysis from One Leonid Mac Video AL50R
    Peter S. Gural
    Peter Jenniskens
    [J]. Earth, Moon, and Planets, 1998, 82-83 : 221 - 247
  • [2] Wide-field video observation and statistical analysis of the Leonid meteor storm in 2001
    Shiki, S
    Fujiwara, H
    Kitazume, J
    Miyamoto, D
    Takeuchi, TT
    Utsumi, Y
    [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 2003, 55 (03) : 567 - 571
  • [3] Lorentz Shaped Comet Dust Trail Cross Section from New Hybrid Visual and Video Meteor Counting Technique - Implications for Future Leonid Storm Encounters
    Peter Jenniskens
    Chris Crawford
    Steven J. Butow
    David Nugent
    Mike Koop
    David Holman
    Jane Houston
    Klaas Jobse
    Gary Kronk
    Kelly Beatty
    [J]. Earth, Moon, and Planets, 1998, 82-83 : 191 - 208
  • [4] Lorentz shaped comet dust trail cross section from new hybrid visual and video meteor counting technique - Implications for future Leonid storm encounters
    Jenniskens, P
    Crawford, C
    Butow, SJ
    Nugent, D
    Koop, M
    Holman, D
    Houston, J
    Jobse, K
    Kronk, G
    Beatty, K
    [J]. EARTH MOON AND PLANETS, 1998, 82-3 (0): : 191 - 208