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The plasma radiation of flare kernels

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Abstract

We offer a coherent plasma-emission mechanism for intense microwave radiation of a flare in the impulsive phase. The radiation arises because of a loss-cone instability of plasma waves near the upper hybrid frequency in the energy release region (flare kernel). Under typical conditions of a flare kernel, conversion of plasma waves into electromagnetic ones causes the radio emission to dominate the second harmonic of the plasma frequency. The radiation is polarized in the extraordinary sense. The Bernstein mode loss-cone instability leads to a zebra-pattern in the microwave radiation. MHD-oscillations of the flare kernel give rise to pulsations of the microwave and hard X-ray emission. The plasma mechanism offers new possibilities of flare plasma diagnostics.

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References

  • Archangelsky, V. V., Baskakov, A. V., Charikov, Yu. E., Derivitsky, Y. G., Dmitriev, P. B., Enikeev, A. G., Kocharov, G. E., Lasutkov, V. P., Matveev, G. A., Naidenov, V. O., Savchenko, M. I., and Sementsov, A. A.: 1977, Space Res. XIX, 381.

    Google Scholar 

  • Benz, A. O. and Kuijpers, J.: 1976, Solar Phys. 46, 275.

    Google Scholar 

  • Brown, J. E., Melrose, D. B., and Spicer, D. S.: 1979, Astrophys. J. 228, 592.

    Google Scholar 

  • de Jager, C.: 1979, Solar Phys. 64, 135.

    Google Scholar 

  • Emslie, A. G. and Vlahos, L.: 1979, Astrophys. J. 242, 359.

    Google Scholar 

  • Ginzburg, V. L.: 1967, Propagation of Electromagnetic Waves in a Plasma, Moscow, Nauka.

    Google Scholar 

  • Holman, G. D., Eichler, D., and Kundu, M. R.: 1980, in M. R. Kundu and T. E. Gergely (eds.), ‘Radio Physics of the Sun’, IAU Symp. 86, 457.

  • Hoyng, P., Duijveman, A., Machado, M., Rust, D., Švestka, Z., Boelee, A., Frost, K., Lafleur, H., Simnett, G., van Beek, H., and Woodgate, B.: 1981, Astrophys. J. 232, L151.

    Google Scholar 

  • Kawamura, K., Omodaka, T., and Suzuki, I.: 1981, Solar Phys. 71, 55.

    Google Scholar 

  • Korablev, A. V.: 1967, Pisma v ZhETF 5, 137.

    Google Scholar 

  • Kuijpers, J.: 1974, Solar Phys. 36, 157.

    Google Scholar 

  • Kundu, M. R.: 1980, in M. R. Kundu and T. E. Gergely (eds.), ‘Radio Physics of the Sun’, IAU Symp. 86, 157.

  • Kundu, M. R. and Vlahos, L.: 1981, ‘Solar Microwave Bursts - A Review’, preprint AP82-009, Maryland.

  • Marsh, K. A. and Hurford, G. J.: 1980, Astrophys. J. 240, L111.

    Google Scholar 

  • Melrose, D. B. and Dulk, G. A.: 1982, Astrophys. J. 259, 844.

    Google Scholar 

  • Mikhailovskii, A. B.: 1974, Theory of Plasma Instabilities I, Consultants Bureau, New York.

    Google Scholar 

  • Orwig, L. E., Frost, K. J., and Dennis, B. R.: 1981, Astrophys. J. 244, L163.

    Google Scholar 

  • Pearlstein, L. D., Rosenbluth, M. N., and Chang, D. B.: 1966, Phys. Fluids 9, 53.

    Google Scholar 

  • Rosenberg, H.: 1972, Solar Phys. 25, 188.

    Google Scholar 

  • Sharma, R. R., Vlahos, L., and Papadopoulos, K.: 1982, Astron. Astrophys. 112, 377.

    Google Scholar 

  • Smith, D. F. and Spicer, D. C.: 1979, Solar Phys. 62, 359.

    Google Scholar 

  • Stepanov, A. V.: 1973, Astron. Zh. 50, 1243.

    Google Scholar 

  • Stepanov, A. V.: 1978, Pisma v Astron. Zh. 4, 193.

    Google Scholar 

  • Švestka, Z.: 1976, Solar Flares, D. Reidel Publ. Co., Dordrecht, Holland.

    Google Scholar 

  • Trakhtengerts, V. Yu.: 1968, Geomagn. i Aeronom. 8, 332.

    Google Scholar 

  • Tsytovich, V. N.: 1971, Theory of Turbulent Plasma, Atomizdat, Moscow.

    Google Scholar 

  • Vedenov, A. A. and Rudakov, L. I.: 1964, Dokl. Akad. Nauk. SSSR 159, 767.

    Google Scholar 

  • Vlahos, L.: 1979, Thesis, Maryland.

  • Vlahos, L. and Papadopoulos, K.: 1979, Astrophys. J. 233, 717.

    Google Scholar 

  • Vorpahl, J. A.: 1976, Astrophys. J. 205, 868.

    Google Scholar 

  • Zaitsev, V. V.: 1977, Radiofiz. 20, 1379.

    Google Scholar 

  • Zaitsev, V. V. and Stepanov, A. V.: 1975a, Astron. Astrophys. 45, 135.

    Google Scholar 

  • Zaitsev, V. V. and Stepanov, A. V.: 1975b, Issledovaniya po geomagnetizmu, aeronomii i fizike Solntsa 37, 11.

    Google Scholar 

  • Zaitsev, V. V. and Stepanov, A. V.: 1982, Pisma v Astron. Zh. 8, 248.

    Google Scholar 

  • Zheleznyakov, V. V.: 1977, Electromagnetic Waves in Space Plasma, Nauka, Moscow.

    Google Scholar 

  • Zheleznyakov, V. V. and Tikhomirov, Yu. V.: 1982, Solar Phys. 82, 121.

    Google Scholar 

  • Zheleznyakov, V. V. and Zlotnik, E. Ya.: 1975a, Solar Phys. 43, 431.

    Google Scholar 

  • Zheleznyakov, V. V. and Zlotnik, E. Ya.: 1975b, Solar Phys. 44, 461.

    Google Scholar 

  • Zlotnik, E. Ya.: 1977, Astron. Zh. 54, 1309.

    Google Scholar 

  • Zlotnik, E. Ya.: 1981, Astron. Astrophys. 101, 250.

    Google Scholar 

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Authors and Affiliations

  1. Applied Physics Institute, U.S.S.R. Academy of Sciences, Gorky, U.S.S.R.

    V. V. Zaitsev

  2. Siberian Institute of Terrestrial Magnetism, Ionosphere and Radio Wave Propagation, Siberian Department, U.S.S.R. Academy of Sciences, Irkutsk, U.S.S.R.

    A. V. Stepanov

Authors
  1. V. V. Zaitsev
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  2. A. V. Stepanov
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Zaitsev, V.V., Stepanov, A.V. The plasma radiation of flare kernels. Sol Phys 88, 297–313 (1983). https://doi.org/10.1007/BF00196194

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  • DOI: https://doi.org/10.1007/BF00196194

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