Journal ArticleDOI
The low‐frequency continuum as observed in the solar wind from ISEE 3: Thermal electrostatic noise
TLDR
In this article, it was shown that the LFC radiation observed in the solar wind is in the form of longitudinal plasma waves rather than transverse electromagnetic waves, and the observed spectral characteristics were found to be a function of antenna length.Abstract:
The low frequency continuum (LFC) noise between 30 and 200 kHz has been investigated from the ISEE 3 spacecraft in the solar wind by means of a radio astronomy experiment more sensitive than previously available. It is demonstrated that the LFC radiation observed in the solar wind is in the form of longitudinal plasma waves rather than transverse electromagnetic waves. The observed spectral characteristics are found to be a function of antenna length. In addition, both the absence of antenna spin modulation and the fact that these plasma waves do not propagate to large distances imply a local origin for the LFC.read more
Citations
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Journal ArticleDOI
Tool kit for antennae and thermal noise near the plasma frequency
TL;DR: In this article, the authors provide the essential tools for deriving quickly the quasi-thermal noise spectrum or the impedance of a given electric antenna near the plasma frequency, for calibration or diagnosis in space plasmas.
Journal ArticleDOI
Detection of a radio emission at 3 kHz in the outer heliosphere
TL;DR: A radio source in the outer heliosphere has been detected by the plasma wave receivers on Voyagers 1 and 2 as discussed by the authors, and the radio emission is observed in the frequency range 2-3 kHz, and is above the local solar wind electron plasma frequency whenever supporting plasma density data are available.
Journal ArticleDOI
Detailed study of electron plasma waves upstream of the Earth’s bow shock
J. Etcheto,M. Faucheux +1 more
TL;DR: In this paper, a detailed study of electron plasma waves observed upstream of the earth's bow shock and of their relationship to the position of the satellite in the foreshock and to the electron measurements has been carried out.
Journal ArticleDOI
Escaping nonthermal continuum radiation
TL;DR: In this article, the authors investigated the relationship between escaping and trapped continuum radiation, and showed that the escaping continuum radiation differs from the trapped component in several temporal and spectral characteristics, taking into account spectral and temporal characteristics of escaping nonthermal continuum radiation.
Journal ArticleDOI
Nonlocal plasma turbulence associated with interplanetary shocks
TL;DR: In this paper, a region of plasma turbulence extending several tenths of an astronomical unit upstream or downstream of interplanetary shocks has been detected by the plasma wave instrument on ISEE 3.
References
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Journal ArticleDOI
The Earth as a radio source: The nonthermal continuum
TL;DR: In this article, a weak nonthermal continuum, radiated by the earth from energetic electrons in the outer radiation zone, is studied and it is shown that the frequency spectrum of the continuum radiation consists of two components, a trapped component, which is permanently trapped within the magnetosphere at frequencies below the solar wind plasma frequency, and an escaping component which propagates freely away from the earth at frequencies above the plasma frequency.
Journal ArticleDOI
Electromagnetic radiation trapped in the magnetosphere above the plasma frequency
Donald A. Gurnett,Robert R. Shaw +1 more
TL;DR: In this article, an electromagnetic noise band was observed in the outer magnetosphere by the Imp 6 spacecraft at frequencies from about 5 to 20 kHz, and it was concluded that this noise must be trapped in the low density region between the plasmapause and magnetopause boundaries.
Journal ArticleDOI
The galactic radio spectrum between 130 and 2600 kHz.
TL;DR: In this article, the IMP-6 radio astronomy experiment has provided new measurements of the galactic background spectrum at 22 frequencies between 130 and 2600 kHz, which corresponds to the minimum galactic radiation observed with a short dipole antenna.
Journal ArticleDOI
On natural noises detected by antennas in plasmas
TL;DR: In this paper, a formal generalization of the Nyquist formula for an antenna in a possibly anisotropic equilibrium plasma is presented along with practically useful expressions derived from it, which can explain some preliminary results of the recent three-dimensional radio mapping experiment (SBH) on the ISEE 3 spacecraft.