scholarly journals Thermal and driven stochastic growth of Langmuir waves in the solar wind and Earth's foreshock

2000 ◽  
Vol 27 (1) ◽  
pp. 61-64 ◽  
Author(s):  
Iver H. Cairns ◽  
P. A. Robinson ◽  
R. R. Anderson
Keyword(s):  
Solar Wind ◽  
Langmuir Waves ◽  
Stochastic Growth

scholarly journals Statistics of auroral Langmuir waves

2008 ◽  
Vol 26 (12) ◽  
pp. 3885-3895 ◽  
Author(s):  
M. Samara ◽  
J. LaBelle ◽  
I. H. Cairns
Keyword(s):  
Electric Field ◽  
High Frequency ◽  
Large Range ◽  
Auroral Zone ◽  
Sounding Rocket ◽  
Growth Theory ◽  
Langmuir Waves ◽  
Stochastic Growth ◽  
Gaussian Form ◽  
Frequency Wave

Abstract. The Physics of Auroral Zone Electrons II (PHAZE II) sounding rocket was launched in February 1997 into active pre-midnight aurora. The resulting high frequency wave data are dominated by Langmuir waves. Consistent with many previous observations the Langmuir waves are sporadic, occurring in bursts lasting up to a few hundred ms. We compute statistics of the electric field amplitudes of these Langmuir waves, with two results. First, the shape of the distribution of running averages of the electric field amplitudes remains approximately stationary for a large range of widths of running average less than ~0.3 ms and for a large range of widths exceeding about 1 ms. The interpretation of this transition timescale is unclear but appears unlikely to be of instrumental origin. Second, for 2.6-ms running averages, corresponding to the latter range, the distribution of the logarithm of electric field amplitudes matches a Gaussian form very well for all nine cases studied in detail, hence the statistics are lognormal. These distributions are consistent with stochastic growth theory (SGT).

Eigenmode Structure in Solar-Wind Langmuir Waves

2008 ◽  
Vol 101 (5) ◽  
Author(s):  
R. E. Ergun ◽  
D. M. Malaspina ◽  
Iver H. Cairns ◽  
M. V. Goldman ◽  
D. L. Newman ◽  
...  
Keyword(s):  
Solar Wind ◽  
Langmuir Waves

scholarly journals Foreshock Langmuir waves for unusually constant solar wind conditions: Data and implications for foreshock structure

1997 ◽  
Vol 102 (A11) ◽  
pp. 24249-24264 ◽  
Author(s):  
Iver H. Cairns ◽  
P. A. Robinson ◽  
Roger R. Anderson ◽  
R. J. Strangeway
Keyword(s):  
Solar Wind ◽  
Langmuir Waves

Parametric interaction and spatial collapse of beam-driven Langmuir waves in the solar wind

1981 ◽  
Vol 86 (A10) ◽  
pp. 8833-8841 ◽  
Author(s):  
D. A. Gurnett ◽  
J. E. Maggs ◽  
D. L. Gallagher ◽  
W. S. Kurth ◽  
F. L. Scarf
Keyword(s):  
Solar Wind ◽  
Parametric Interaction ◽  
Langmuir Waves

scholarly journals Langmuir waves in a fluctuating solar wind

1999 ◽  
Vol 104 (A8) ◽  
pp. 17069-17078 ◽  
Author(s):  
P. J. Kellogg ◽  
K. Goetz ◽  
S. J. Monson ◽  
S. D. Bale
Keyword(s):  
Solar Wind ◽  
Langmuir Waves

scholarly journals Mode Conversion and Reflection of Langmuir Waves in an Inhomogeneous Solar Wind

2001 ◽  
Vol 18 (4) ◽  
pp. 355-360 ◽  
Author(s):  
A. J. Willes ◽  
Iver H. Cairns
Keyword(s):  
Solar Wind ◽  
Electromagnetic Waves ◽  
Plasma Frequency ◽  
Mode Conversion ◽  
Langmuir Wave ◽  
Solar Wind Plasma ◽  
Langmuir Waves ◽  
Transverse Electromagnetic ◽  
Solar Wind Parameters ◽  
Conversion Efficiencies

AbstractBeam-driven Langmuir waves in the solar wind are generated just above the electron plasma frequency, which fluctuates in the inhomogeneous solar wind plasma. Consequently, propagating Langmuir waves encounter regions in which the wave frequency is less than the local plasma frequency, where they can be reflected, mode converted to transverse electromagnetic waves, and trapped in density wells. The aim here is to investigate Langmuir wave reflection and mode conversion at a linear density gradient for typical solar wind parameters. It is shown that higher mode conversion efficiencies are possible than previously calculated, but that mode conversion occurs in a smaller region of parameter space. In addition, the possibility of detecting mode conversion with in situ spacecraft Langmuir wave observations is discussed.

Low-frequency waves associated with Langmuir waves in solar wind

1995 ◽  
Vol 100 (A3) ◽  
pp. 3417-3426 ◽  
Author(s):  
G. Thejappa ◽  
Donat G. Wentzel ◽  
R. G. Stone
Keyword(s):  
Solar Wind ◽  
Low Frequency ◽  
Langmuir Waves ◽  
Low Frequency Waves
Sign in / Sign up

Export Citation Format

Share Document