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Quasi-thermal Noise Spectra Measured by a Dipole Antenna in the Upper Hybrid frequency band

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Abstract

Quasi-thermal noise (QTN) spectroscopy is one of the most effective tools for in situ diagnostics in space plasmas (Meyer-Vernet et al., 1998; Meyer-Vernet and Perche, 1989; Chugunov and Trakhtengerts, 1978). This method produces routine measurements of the bulk electron density and temperature; recently it has been extended to measure the ion bulk speed. Among the advantages of the method its immunity to spacecraft potential and photoelectron perturbations should be noted. Quasi-thermal noise spectroscopy is used particularly on Ulysses and Wind. However for the interpretation of QTN data the calculation of the noise voltage induced on antennas under different conditions is necessary. This question is especially complicated and so far insufficiently studied in magnetized plasmas. In the present paper we calculate the spectrum of the noise voltage induced on a dipole antenna in the upper hybrid frequency range. The computations are adapted to the interpretation of data acquired on the Ulysses and Wind spacecraft.

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Authors and Affiliations

  1. Institute of Applied Physics RAS, Nizhny Novgorod, Russia

    Yury V. Chugunov, Anna Yu. Kazarova & Eugene A. Mareev

  2. DESPA, Observatoire de Paris, Meudon, France

    Michel Moncuquet, Karine Issautier & Nicole Meyer-Vernet

Authors
  1. Yury V. Chugunov
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  2. Anna Yu. Kazarova
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  3. Eugene A. Mareev
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  4. Michel Moncuquet
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  5. Karine Issautier
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  6. Nicole Meyer-Vernet
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Chugunov, Y.V., Kazarova, A.Y., Mareev, E.A. et al. Quasi-thermal Noise Spectra Measured by a Dipole Antenna in the Upper Hybrid frequency band. Astrophysics and Space Science 277, 313–316 (2001). https://doi.org/10.1023/A:1012285814221

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  • DOI: https://doi.org/10.1023/A:1012285814221

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