Meteoroid structure from radar head echoes

被引：18
作者：
Campbell-Brown, M. D. [1 ]
Close, S. [1 ]
机构：
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 382卷 / 03期
关键词：
meteors; meteoroids;
D O I：
10.1111/j.1365-2966.2007.12471.x
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The Advanced Research Project Agency (ARPA) Long Range Tracking and Instrumentation Radar has recorded thousands of head echoes from small meteoroids, which include detailed trajectory information as well as ionization measurements. In total, 25 complete ionization curves have been matched using a detailed model of meteoroid ablation, though the solutions are not necessarily unique. While measurements of the spread along the trajectory of the echoes indicate that most meteors in this size range do not have large separations among fragments, the ionization curves are consistent with fragmenting bodies in the most cases. Very precise radar measurements of meteors can be a valuable source of data on the chemical and physical properties of small meteoroids.
引用
收藏
页码：1309 / 1316
页数：8
相关论文
共 24 条
[1]   Leonid meteor light-curve synthesis [J].
Beech, M ;
Murray, IS .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2003, 345 (02) :696-704
[2]  
Borovicka J., 2006, P IAU S, P249
[3]  
Bronshten V. A., 1983, Physics of Meteoric Phenomena
[4]   Multi-station electro-optical observations of the 1999 Leonid meteor storm [J].
Brown, P ;
Campbell, MD ;
Hawkes, RL ;
Theijsmeijer, C ;
Jones, J .
PLANETARY AND SPACE SCIENCE, 2002, 50 (01) :45-55
[5]  
BROWNLEE DE, 1983, METEOR ABLATION SHER, P10
[6]   Image-intensified video results from the 1998 Leonid shower: I. Atmospheric trajectories and physical structure [J].
Campbell, MD ;
Brown, PG ;
LeBlanc, AG ;
Hawkes, RL ;
Jones, J ;
Worden, SP ;
Correll, RR .
METEORITICS & PLANETARY SCIENCE, 2000, 35 (06) :1259-1267
[7]  
Campbell-Brown MD, 2004, ASTRON ASTROPHYS, V418, P751, DOI [10.1051/0004-6361:20041001-1, 10.1051/0004-6361:20041001]
[8]   Meteor head echo radar data: Mass-velocity selection effects [J].
Close, S. ;
Brown, P. ;
Campbell-Brown, M. ;
Oppenheim, M. ;
Colestock, P. .
ICARUS, 2007, 186 (02) :547-556
[9]   A technique for calculating meteor plasma density and meteoroid mass from radar head echo scattering [J].
Close, S ;
Oppenheim, M ;
Hunt, S ;
Coster, A .
ICARUS, 2004, 168 (01) :43-52
[10]   Novel applications of MST radars in meteor studies [J].
Elford, WG .
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS, 2001, 63 (2-3) :143-153
123