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Radio Physics and Radio Astronomy

ISSN 印刷: 2152-274X
ISSN オンライン: 2152-2758

Archives: Volume 1, 2010 to Volume 3, 2012

Radio Physics and Radio Astronomy

DOI: 10.1615/RadioPhysicsRadioAstronomy.v1.i1.10
pages 3-9

DISPERSION ANALYSIS OF INTERPLANETARY SCINTILLATIONS AT DECAMETER WAVELENGTHS: FIRST RESULTS

Igor Savel'evich Fal'kovich
Institute of Radio Astronomy, National Academy Sciences of Ukraine
Alexandr A. Konovalenko
Institute of Radio Astronomy of the National Academy of Sciences of Ukraine
Nikolai Nikolaevich Kalinichenko
Institute of Radio Astronomy, National Academy Sciences of Ukraine
M. R. Olyak
Institute of Radio Astronomy, National Academy of Sciences of Ukraine
A. A. Gridin
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4, Chervonopraporna St., Kharkiv 61002, Ukraine
N. N. Bubnov
Institute of Radio Astronomy, National Academy of Sciences of Ukraine, 4, Chervonopraporna St., Kharkiv 61002, Ukraine
A. I. Brazhenko
Poltava Gravimetric Observatory, Subbotin Institute of Geophysics National Academy of Sciences of Ukraine, 27/29 Myasoedov St., Poltava 36029, Ukraine
A. Lecacheux
Ovservatoire Paris-Meudon, Paris, CNRS UMR 8644, France
H. O. Rucker
Institut für Weltraumforschung der Österreichischen Akademie der Wissenschaften, 6, Schmiedlstrasse, Graz, 8042, Austria

要約

The potential of the dispersion analysis technique is discussed in application to interplanetary scintillations observed from two sites (UTR-2 and URAN-2 radio telescopes). By combining analyses of the frequency dependences shown by velocities of cross-spectral harmonics of the scintillations and of their power spectra, it proves possible to recover the basic parameters of the interplanetary plasma along the line of sight. In the framework of a layered model of the medium, layer thicknesses, densities and velocities can be estimated, as well as the power index of the spatial spectrum and inner scale of the turbulence.

参考

  1. Butcher, H. R., LOFAR: "First of a new generation of radio telescopes".

  2. Vitkevich, V. V. and Vlasov, V. I., Parameters of interplanetary electron density irregularities according to observational data of 1967-1969.

  3. Vlasov, V. I., Interplanetary shock waves according to radio scintillation observations.

  4. Vlasov, V. I., Shishov, V. I., and Shishova, T. D., Parameter variations of interplanetary scintillations and disturbance types in the interplanetary medium.

  5. Blums, D. F. and Lotova, N. A., Analyzing frequency spectra of scintillations with account of velocity distributions in the solar wind.

  6. Bovkoon, V. P. and Zhouck, I. N., Interplanetary scintillations of decameter wave cosmic sources owing to interplanetary and ionospheric plasma irregularities.

  7. Falkovich, I. S., Konovalenko, A. A., Kalinichenko N. N., Olyak, M. R., Gridin, A. A., Bubnov, I. N., Lecacheux, A., Rucker, H. O., Variation of parameters of solar wind stream structure outside 1 a.u. in 2003 and 2004.

  8. Falkovich, I. S., Kalinichenko, N. N., Gridin, A. A., and Bubnov, I. N., Feasibility of broad band observations of interplanetary scintillations at decameter wavelengths.

  9. Jackson, B. V. and Hick, P. L., Heliospheric tomography using interplanetary scintillation observations 1. Combined Nagoya and Cambridge data.

  10. Lotova, N. A. and Chashey, I. V., Velocity distributions in the interplanetary medium as recovered from scintillation observations.

  11. Olyak, M. R., Applying the dispersion analysis technique to solar wind investigations.

  12. Braude, S. J. , Megn, A. V., and Sodin, L. G., The decameter-band radio telescope UTR-2.

  13. Megn, À. V. , Sharykin, N. K., Zakharenko, V. V. , Bulatsen, V. G., Brazhenko, A. I., Vaschishin, R. V., Decameter wavelength radio telescope URAN-2.

  14. Falkovich, I. S., Gridin, A. A., Kalinichenko, N. N., and Bubnov, I. N., A 16-channel correlation type radiometer for interplanetary scintillation observations.

  15. Konovalenko, A. A., Falkovich, I. S., Kalinichenko, N. N., Gridin, A. A., Bubnov, I. N., Lecacheux, A., Rosolen, C., and Rucker, H. O., Thirty-element active antenna array as a prototype of a huge low-frequency radio telescope.


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