Modelling of the structure and light scattering of individual dust particles

被引:0
作者
Bertini, I [1 ]
Thomas, N [1 ]
Barbieri, C [1 ]
机构
[1] Univ Padua, CISAS, I-35100 Padua, Italy
来源
NEW ROSETTA TARGETS: OBSERVATIONS, SIMULATIONS AND INSTRUMENT PERFORMANCES | 2004年 / 311卷
关键词
comets; dust; light scattering;
D O I
暂无
中图分类号
V [航空、航天];
学科分类号
08 ; 0825 ;
摘要
Cometary dust environment modelling is required to make predictions for the European Space Agency's Rosetta mission. Following results front pre-planetary dust aggregation experiments both on Earth and in space (CODAG), we have developed a code to generate and study the morphological properties of dust chains characterized by a fractal mass dimension D-f similar to 1.3. We are now analysing the scattering properties of these chains and comparing their behaviour with the dust scattering properties seen in the cometary comae. Preliminary results and future prospects are described in this paper.
引用
收藏
页码:167 / 176
页数:10
相关论文
共 12 条
[1]   First results from the cosmic dust aggregation experiment CODAG [J].
Blum, J ;
Wurm, G ;
Poppe, T ;
Kempf, S ;
Kozasa, T .
IMPACT OF THE GRAVITY LEVEL ON MATERIALS PROCESSING AND FLUID DYNAMICS, 2002, 29 (04) :497-503
[2]   Growth and form of planetary seedlings:: Results from a microgravity aggregation experiment [J].
Blum, J ;
Wurm, G ;
Kempf, S ;
Poppe, T ;
Klahr, H ;
Kozasa, T ;
Rott, M ;
Henning, T ;
Dorschner, J ;
Schräpler, R ;
Keller, HU ;
Markiewicz, WJ ;
Mann, I ;
Gustafson, BAS ;
Giovane, F ;
Neuhaus, D ;
Fechtig, H ;
Grün, E ;
Feuerbacher, B ;
Kochan, H ;
Ratke, L ;
El Goresy, A ;
Morfill, G ;
Weidenschilling, SJ ;
Schwehm, G ;
Metzler, K ;
Ip, WH .
PHYSICAL REVIEW LETTERS, 2000, 85 (12) :2426-2429
[3]  
Bohren C., 1983, ABSORPTION SCATTERIN
[4]   Optical properties of cometary dust - Constraints from numerical studies on light scattering by aggregate particles [J].
Kimura, H ;
Kolokolova, L ;
Mann, I .
ASTRONOMY & ASTROPHYSICS, 2003, 407 (01) :L5-L8
[5]   Dust grains in the comae and tails of sungrazing comets: Modeling of their mineralogical and morphological properties [J].
Kimura, H ;
Mann, I ;
Biesecker, DA ;
Jessberger, EK .
ICARUS, 2002, 159 (02) :529-541
[6]  
Levasseur-Regourd AC, 2001, ESA SPEC PUBL, V495, P587
[7]   Optical properties of the Martian aerosols as derived from Imager for Mars Pathfinder midday sky brightness data [J].
Markiewicz, WJ ;
Sablotny, RM ;
Keller, HU ;
Thomas, N ;
Titov, D ;
Smith, PH .
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS, 1999, 104 (E4) :9009-9017
[8]   Light scattering by aggregate particles comparable in size to wavelength: Application to cometary dust [J].
Petrova, EV ;
Jockers, K ;
Kiselev, NN .
SOLAR SYSTEM RESEARCH, 2001, 35 (01) :57-69
[9]   Experiments on preplanetary dust aggregation [J].
Wurm, G ;
Blum, J .
ICARUS, 1998, 132 (01) :125-136
[10]   An experimental study on the structure of cosmic dust aggregates and their alignment by motion relative to gas [J].
Wurm, G ;
Blum, J .
ASTROPHYSICAL JOURNAL, 2000, 529 (01) :L57-L60