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Bremsstrahlung of relativistic electrons accelerated in solar flares: The intensity and degree of polarization

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Abstract

The generation of bremsstrahlung by relativistic electrons accelerated in solar flares is considered. The electron distribution function is calculated numerically using the relativistic Fokker-Planck equation. The intensity and degree of polarization of hard X rays are calculated as functions of the energy, observation angle, and electron distributions in pitch angle and energy. The degree of polarization does not exceed 40% and depends most strongly on the observation angle and hardness of the electron energy spectra. The results of model computation are compared with data for solar flares observed July 23, 2002 and October 28, 2003.

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References

  1. J. Leach and V. Petrosian, Astrophys. J. 251, 787 (1981).

    Article  Google Scholar 

  2. J. Leach and V. Petrosian, Astrophys. J. 269, 715 (1981).

    Article  ADS  Google Scholar 

  3. S. R. Kel’ner and Yu. I. Skrynnikov, Sov. Astron. 29, 445 (1985).

    ADS  Google Scholar 

  4. V. V. Zharkova and M. Gordovskyy, Astrophys. J. 651, 553 (2006).

    Article  ADS  Google Scholar 

  5. V. V. Zharkova, A. A. Kuznetsov, and T. V. Siversky, Astron. Astrophys. 512, A8 (2010).

    Article  ADS  Google Scholar 

  6. A. B. Guzman, I. V. Kudryavtsev, and Yu. E. Charikov, Astron. Rep. 73, 273 (1996).

    Google Scholar 

  7. Yu. E. Charikov, A. B. Guzman, and I. V. Kudryavtsev, Astron. Astrophys. 308, 924 (1996).

    ADS  Google Scholar 

  8. Yu. E. Charikov, P. B. Dmitrijev, I. V. Koudriavtsev, V. P. Lazutkov, G. A. Matveev, M. I. Savchenko, and D. V. Skorodumov, in Proceedings of the 223rd International Astronomical Union Symposium on Multi-Wavelength Investigations of Solar Activity, St. Petersburg, 2004, Ed. by A. V. Stepanov, E. E. Benevolenskaya, and A. G. Kosovichev (Cambridge Univ., Cambridge, 2004), pp. 429–432.

    Google Scholar 

  9. P. B. Dmitriev, I. V. Kudryavtsev, V. P. Lazutkov, G. A. Matveev, M. I. Savchenko, D. V. Skorodumov, and Yu. E. Charikov, Astron. Vest. 40, 160 (2006).

    Google Scholar 

  10. M. Abramovitz and I. A. Stegun, Handbook of Mathematical Functions (Dover, New York, 1971; Nauka, Moscow, 1979).

    Google Scholar 

  11. J. C. Brown, Solar Phys. 18, 489 (1971).

    Article  ADS  Google Scholar 

  12. R. L. Gluckstern and M. H. Hull, Phys. Rev. 90, 1030 (1953).

    Article  ADS  MATH  Google Scholar 

  13. E. Jahnke, F. Emde, and F. Losch, Tables of Higher Functions, 6th Ed. (McGraw-Hill, New York, 1960; Nauka, Moscow, 1968).

    MATH  Google Scholar 

  14. M. J. Ashwanden, Space Sci. Rev. 101(1–2), 1 (2002).

    Article  ADS  Google Scholar 

  15. E. Suarez-Garcia, W. Hajdas, C. Wigger, K. Arzner, M. Gudel, and A. Z. Grigis, Solar Phys. 239, 149 (2006).

    Article  ADS  Google Scholar 

  16. S. E. Boggs, W. Coburn, and E. Kalemci, Astrophys. J. 638, 1129 (2006).

    Article  ADS  Google Scholar 

  17. M. J. Aschwanden, Space Sci. Rev. 149(1–4), 31 (2009).

    Article  ADS  Google Scholar 

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Correspondence to I. V. Kudryavtsev.

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Original Russian Text © I.V. Kudryavtsev, Yu.E. Charikov, 2012, published in Zhurnal Tekhnicheskoi Fiziki, 2012, Vol. 82, No. 10, pp. 50–57.

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Kudryavtsev, I.V., Charikov, Y.E. Bremsstrahlung of relativistic electrons accelerated in solar flares: The intensity and degree of polarization. Tech. Phys. 57, 1372–1379 (2012). https://doi.org/10.1134/S1063784212100118

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  • DOI: https://doi.org/10.1134/S1063784212100118

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