CONNECTION BETWEEN AMBIENT DENSITY-FLUCTUATIONS AND CLUMPY LANGMUIR-WAVES IN TYPE-III RADIO-SOURCES

被引：48

作者：

ROBINSON, PA

CAIRNS, IH

GURNETT, DA

机构：

[1] UNIV SYDNEY,THEORET ASTROPHYS RES CTR,SYDNEY,NSW 2006,AUSTRALIA

[2] UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242

来源：

ASTROPHYSICAL JOURNAL | 1992年 / 387卷 / 02期

关键词：

PLASMAS; SOLAR WIND; SUN; RADIO RADIATION;

D O I：

10.1086/186315

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A recent stochastic-growth theory of clumpy Langmuir waves in type III sources is shown to imply that the clumps will have the same size distribution as the ambient low-frequency density fluctuations in the solar wind. Spectral analysis of Langmuir-wave time series from the ISEE 3 plasma wave instrument confirms this prediction to within the uncertainties in the spectra. The smallest Langmuir clump size is inferred to be in the range 0.4-30 km in general, and 2-30 km for beam-resonant waves, and it is concluded that the diffusion of waves in the source is anomalous.

引用

页码：L101 / L104

页数：4

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[2]

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[3]

GROGNARD RJM, 1985, SOLAR RADIOPHYSICS, P253

[4]

Gurnett D. A., 1980, IAU S, V86, P369